Usual Configuration Research Articles

The impact of a ZnO space layer on enhancing the efficiency of P3HT: PCBM blend-based organic solar cells

The performance of Organic Solar Cells (OSCs) based on a composite photoactive of poly(3-hexylthiophene) (P3HT) and 6,6-phenylC61-butyric acid methyl ester (PCBM) as the donor and acceptor electrons, respectively, is examined in this paper through a simulation study. Optical Zinc oxide (ZnO) spacers between the active layer and the Aluminum (Al) cathode contact layer, serving as a hole transport layer (HTL), are compared to the usual configuration without a ZnO spacer in the second device construction. With and without the ZnO optical spacer, we calculate the electric field intensities and generation rates (G) for a range of incident wavelengths. Under AM 1.5 G at 100 mW cm−2 illumination and in the dark, the short-circuit current density (Jsc) is improved by up to 9.47% after adding the ZnO layer as an optical spacer. In addition, there is a gain of up to 11.42% in external quantum efficiency (EQE). Furthermore, the ZnO spacer layer device has a markedly higher incident photon-to-electron conversion efficiency (IPCE), going from 77% in the control device (without ZnO) to 90% with ZnO spacer layer. The numerical simulation results based on the finite element method (FEM) are consistent with the published experimental data.

A Cable-Based Haptic Interface with a Reconfigurable Structure

Abstract Cable robots have been used as haptic interfaces for several decades now, with the most notable examples being the SPIDAR and its numerous iterations throughout the years, as well as the more recent IPAnema 3 Mini manufactured by Fraunhofer IPA. However, these robots still have drawbacks, particularly their high number of cables required to maintain a high workspace-to-installation-space ratio. Using a hybrid-structure cable robot (HSCR) could prevent some collisions that occur between the cables and the user's body. More specifically, some applications requiring multimodal feedback could benefit from the flexibility that a reduced number of cables offers. Therefore, this paper presents a novel SPIDAR-like VSCR and its sensor-less force control method based on motor current. The purpose of this work is to clarify the advantages that a variable structure can provide for haptic interaction. In this regard, experimental results regarding the device's workspace and its force feedback capabilities are presented. Additionally, since real-time high-frequency updates are required for haptic display, we provide additional data regarding the control algorithm's runtime. Lastly, another experiment was conducted to study changes in user performance when using both the variable and the usual cable configuration. The results showed that feedback accuracy is maintained, and there are no drawbacks to using hybrid configurations.

In2S3 thin films with potential use as window layers in photovoltaic devices

In this study, we use the Haacke’s figure of Merit (FOMH) as a valuable parameter for determining suitable Indium Sulphide thin films among a set of samples processed with different deposition parameters, in order to use them as window layers in the usual configuration of photovoltaic devices. Two sets of In2S3 thin films were deposited by radiofrequency (RF) magnetron sputtering technique with an average thickness around 90 nm and using different deposition parameters. One set of samples was processed using different RF power in the range of 75–250 W at room temperature, the second set was obtained using different substrate temperatures 24 °C–350 °C keeping a constant RF power at 75 W. The FOMH consider optical and electrical properties of In2S3 thin films in order to evaluate the feasibility of the thin film to be used as a window layer in photovoltaics devices. The In2S3 thin films processed by RF-Sputtering were analyzed by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Ultraviolet-Visible spectroscopy, Raman spectroscopy, x-ray diffraction (XRD) and four-probe method. The In2S3 thin films had a high optical transmittance of 84% and the energy band gap values of the films decreased from 2.48 to 2.38 with the increase in substrate temperature and deposition power. The estimated grain size decreasing from 65 to 45 nm as the RF power increased. Additionally, the crystallinity of the selected In2S3 thin films was analyzed by Raman and XRD and showing that the cubic and tetragonal β-In2S3 phases can coexist in the films. The In2S3 thin films showed resistivity vales around Higher values of FOMH were obtained for In2S3 thin films processed at 75 W, 250 W, 100 °C and 300 °C, therefore these layer are feasible candidates to be used as window layers in photovoltaic devices.

Experimental comparison between threaded‐bars and single‐bolts end plate asymmetrical steel joints

AbstractEnd plate beam‐column bolted joints are widely used in the field of steel structures. The usual configuration consists of individual bolts that join the end plate of the beam with the column flange. Usually, the use of stiffeners is needed in this type of joints, in order to reinforce the tension and compression zones of the column web, and to avoid local buckling problems.This configuration, applied to asymmetric connections, gives rise to the appearance of shear stresses in the column web, even with symmetric loading conditions on both sides of the connection.The method proposed in this work to improve the behavior of end plate asymmetrical steel joints, without using welded stiffeners (which significantly increases the cost of the joint), consists in using threaded bars as joining elements, instead of single bolts. Threaded bars have several purposes: to create the joint itself, to reinforce the tension and compression zones, and to reduce the shear stresses in the column web panel.In the present work, two end plate steel joints made up of an HEA200 column, and IPE200 and IPE300 beams have been tested. One of them with threaded bars with double nuts (internal and external) in the traction and compression zones, and the other one with single bolts.Symmetrical forces have been applied at the ends of the beams, subjecting the joints to symmetrical bending moments on both sides of the connection. The tests have been instrumented through the use of load cells, displacement sensors and inclinometers. The results show an important increase in the stiffness and the resistance of the joint with threaded bars, compared with the single bolts joint.This work will serve as the basis for the calibration of the corresponding finite element models, and the subsequent parametric study of this type of joints.

Physical properties of aluminum doped Zinc Oxide thin films and single wall carbon nanotubes bilayers with potential application in photovoltaics devices

A study of transparent thin films of Zinc Oxide doped with Aluminum (AZO) processed by sputtering with potentials application as substrate for single wall carbon nanotubes processing by spray-coating is discussed in this work. AZO Thin films have been deposited by radiofrequency magnetron sputtering technique at room temperature in high vacuum ambient and using an Argon atmosphere. The AZO thin films and the processed bilayers of Zinc Oxide: Aluminum/Single wall carbon nanotubes were characterized by scanning electron microscopy, Raman spectroscopy, x-ray diffraction, ultraviolet-visible spectrophotometry, stylus profilometry and four-terminal method for the electrical resistivity measurement. The feasibility of the Zinc Oxide doped with Aluminum thin films for its use as single wall Carbon Nanotubes substrate processed by a low-cost technique, with potential application in the configuration of photovoltaics devices is presented, analyzed and discussed as function of its electrical, morphological and optical properties through Haacke figure of merit quantification. A two-order reduction in resistivity values, average acceptable transmittance values (∼80%), and crystallinity expected for polycrystalline films were obtained for AZO/Single wall carbon nanotubes bilayers; although the homogeneity of the single wall carbon nanotubes distribution on AZO thin films processed by RF-Sputtering should be improved, the possible application as transparent electrode in a usual configuration of solar cells of AZO/Single wall carbon nanotubes can be performed.

Effect of fixational eye movements in corneal topography measurements with optical coherence tomography.

There is an increasing interest in applying optical coherence tomography (OCT) to quantify the topography of ocular structures. However, in its most usual configuration, OCT data is acquired sequentially while a beam is scanned through the region of interest, and the presence of fixational eye movements can affect the accuracy of the technique. Several scan patterns and motion correction algorithms have been proposed to minimize this effect, but there is no consensus on the ideal parameters to obtain a correct topography. We have acquired corneal OCT images with raster and radial patterns, and modeled the data acquisition in the presence of eye movements. The simulations replicate the experimental variability in shape (radius of curvature and Zernike polynomials), corneal power, astigmatism, and calculated wavefront aberrations. The variability of the Zernike modes is highly dependent on the scan pattern, with higher variability in the direction of the slow scan axis. The model can be a useful tool to design motion correction algorithms and to determine the variability with different scan patterns.

Gravitational lensing by using the 0th order of affine perturbation series of the deflection angle of a ray near a photon sphere

The 0th order of affine perturbation series of the deflection angle of a ray near a photon sphere is more accurate than a deflection angle in a strong deflection limit, which is used often, because the later has hidden error terms. We investigate gravitational lensing by using 0th order affine perturbation series of the deflection angle in a general asymptotically-flat, static, and spherical symmetric spacetime with the photon sphere. We apply our formula to Schwarzschild black hole, Reissner–Nordström black hole, and Ellis–Bronnikov wormhole spacetimes as examples. By comparing observables by using the deflection angles, we show that we can ignore the effect of the hidden error terms in the the deflection angle in the strong deflection limit on the observables in a usual lens configuration with the photon sphere since the hidden error terms are tiny. On the other hand, in a retro lensing configuration, the deflection angle in the strong-deflection-limit analysis have error of several percent and the 0th order of affine perturbation series of the deflection angle has almost half of the error. Thus, in the retro lensing configuration, we should use the 0th order of affine perturbation series of the deflection angle rather than the deflection angle in the strong-deflection-limit analysis. The 0th order of affine perturbation series of the deflection angle can give a brighter magnification by a dozen percent than the one by using the deflection angle in the strong-deflection-limit analysis.

Influence of topography on the optical performances of a Fresnel linear asymmetrical concentrator array: The case of the eLLO solar power plant

Solar field orientation and inclination are variables that significantly influence the optical performance over the year of Linear Fresnel Collector (LFC). The usual field configuration is a flat north-south (NS) orientation, however, the future development of the LFC sector, for example for solar heat for industry, could more often impose the land choice and therefore the solar field configuration. To study the influence of such configuration on a solar field optical performance, a ray-tracing model was used to evaluate the LFC optical performance for each solar position and a consistent methodology was developed to evaluate the solar position in the module reference system. This method allows studying the optical performance of any LFC array configuration. The paper first looks separately at the influence of orientation and tilt imposed by the topography of the eLLO project, then focuses on the eLLO solar power plant case study. The results of eLLO's solar line simulation showed an increase of 1.6% in annual absorbed energy compared to NS implementation, which is the best orientation for the localization. In conclusion, the design and implementation of modular LFC array can be adapted to a wide range of terrains and can even take advantage of this constraint.

Valoración ecográfica de la dinámica diafragmática en pacientes con enfermedad pulmonar obstructiva crónica tras tratamiento con indacaterol/glicopirronio

IntroductionAir trapping is one of the main determinants of dyspnea in patients with chronic obstructive pulmonary disease (COPD). An increase in air trapping leads to the diaphragm losing its usual configuration and thus affects its functionality; said functionality seems to improve after administering bronchodilator therapy. Chest ultrasound (CU) has been used to assess changes after the use of short-acting bronchodilators, but there are no studies that assess these changes with the use of long-acting bronchodilators. Material and methodsThis work is a prospective interventional study with 3months of follow-up that assessed diaphragm motion/thickness by means of CU before and after starting treatment with indacaterol/glycopyrronium 85/43 mcg in patients with COPD and moderate to very severe airway obstruction. ResultsThirty patients were included (56.6% men, mean age: 69.4±6.2 years). Pre- and post-treatment diaphragmatic mobility measured during resting breathing, deep breathing, and nasal sniffing were 19.9±7.1mm and 26.4±8.7mm (p < 0.0001); 42.5±14.1mm and 64.5±25.9mm (p < 0.0001); and 36.5±17.4mm and 46.7±18.5mm (p = 0.012), respectively. A significant improvement was also found in the minimum and maximum diaphragm thickness (p < 0.05), but there were no significant changes in the diaphragmatic shortening fraction after treatment (p = 0.341). ConclusionsTreatment with indacaterol/glycopyrronium 85/43 mcg every 24hours for 3months improved diaphragmatic mobility in patients with COPD with moderate to very severe airway obstruction. CU may be useful for assessing the response to treatment in these patients.

On the Optimal Mounting Angle for a Spinning LiDAR on a UAV

Unmanned aerial vehicle (UAV)-based 3-D LiDAR mapping has received increasing interest from both the research community and industrial operations for the 3-D reconstruction of large and dangerous environments. When a light detection and ranging (LiDAR) sensor is rigidly mounted to a UAV, one usually orients it, such that the LiDAR’s upward direction coincides with the UAV’s flight direction. For a spinning LiDAR, this fully specifies the mounting orientation because of circular symmetry. However, we argue, in this article, that this configuration is suboptimal, especially when the LiDAR’s full horizontal field of view is not important, either because of a limited field of view of other sensors in case of sensor fusion or because the scene to (swath) map via LiDAR is less wide than the LiDAR’s field of view. Indeed, in this situation, many of the points the LiDAR samples are not of interest. Additionally, in the usual configuration, the UAV’s movement can compensate for the limited elevation resolution of the LiDAR, but much less so for the azimuth resolution. For a simplified theoretical model, we introduce a quality metric for mounting angles. Using a simulation, we then derive the optimal mounting angle, which we validate via real world flights. We suggest to rotate this standard mounting orientation over an angle of −84.5° over the UAV’s vertical direction.

Eccrine spiradenoma (ES): A rare adnexal tumour

Eccrine spiradenoma is an extremely rare adnexal tumor of the sweat gland, first described in 1934 by Sutton and later by Kersting et al., in 1956. It commonly presents as a painful, nodular, slow-growing mass on the upper trunk, head and neck region, usually between 15-35 years of age. Eccrine spiradenocarcinoma, its malignant counterpart also exists with a metastasis rate of 50% and mortality rate of 37%, making the diagnosis of ES essential. A biopsy is usually essential for proper identification of this rare tumour as it resembles other dermal lesions such as leiomyoma, dermatofibroma, angiolipoma, glomus tumour, papilloma and neurofibroma. We herein describe a case of Spiradenoma in a 37 year old gentleman who presented to the General surgery department at our hospital. Owing to the paucity of data, no guidelines for the optimal management of ES cases currently exists in the literature. Our case was unusual as the tumour was non-tender and had a pedunculated, papilloma-like configuration as opposed to usual nodular configuration.

Reversible focal intracranial hypertension swine model with continuous multimodal neuromonitoring

BackgroundIntracranial hypertension (HI) is associated with worse neurological outcomes and higher mortality. Although there are several experimental models of HI, in this article we present a reproducible, reversible, and reliable model of intracranial hypertension, with continuous multimodal monitoring. New methodA reversible intracranial hypertension model in swine with multimodal monitoring including intracranial pressure, arterial blood pressure, heart rate variation, brain tissue oxygenation, and electroencephalogram is developed to understand the relationship of ICP and EEG. By inflating and deflating a balloon, located 20 mm anterior to the coronal suture and a 15 mm sagittal suture, we generate intracranial hypertension events and simultaneously measure intracranial pressure and oxygenation in the contralateral hemisphere and the EEG, simulating the usual configuration in humans. ResultsWe completed 5 experiments and in all of them, we were able to complete at least 6 events of intracranial hypertension in a stable and safe way. For events of 20–40 mmHg of ICP we need an median (IQR) of 4.2 (3.64) ml of saline solution into the Foley balloon, a median (IQR) infusion time of 226 (185) second in each event and for events of 40–50 mmHg of ICP we need a median (IQR) of 5.1 (4.66) ml of saline solution, a median (IQR) infusion time of 280 (48) seconds and a median (IQR). The median (IQR) maintenance time was 352 (77) seconds and 392 (166) seconds for 20–40 mmHg and 40–50 mmHg of ICP, respectively. Comparison with existing method(s)Existing methods do not include EEG measures and do not present the reversibility of intracranial hypertension. ConclusionsOur model is fully reproducible, it is capable of generating reversible focal intracranial hypertension through strict control of the injected volume, it is possible to generate different infusion rates of the volume in the balloon, in order to generate different scenarios, the data obtained are sufficient to determine the brain complacency in real time. and useful for understanding the pathophysiology of ICP and the relationship between ICP (CPP) and EEG.

Solar Desalination Driven by Organic Rankine Cycles (Orc) and Supercritical CO2 Power Cycles: An Update

In the field of desalination powered by renewable energies, the use of solar power cycles exhibits some favorable characteristics, such as the possibility of implementing thermal energy storage systems or a multi-generation scheme (e.g., electricity, water, cooling, hydrogen). This article presents a review of the latest design proposals in which two power cycles of great potential are considered: the organic Rankine cycle and the supercritical CO2 power cycle, the latter of growing interest in recent years. The designs found in the literature are grouped into three main types of systems. In the case of solar ORC-based systems, the option of reverse osmosis as a desalination technology is considered in medium-temperature solar systems with storage but also with low-temperature using solar ponds. In the first case, it is also common to incorporate single-effect absorption systems for cooling production. The use of thermal desalination processes is also found in many proposals based on solar ORC. In this case, the usual configuration implies the cycle’s cooling by the own desalination process. This option is also common in systems based on the supercritical CO2 power cycle where MED technology is usually selected. Designs proposals are reviewed and assessed to point out design recommendations.

Integrated Electro-Optic Modulator in Z-Cut Lithium Niobate Thin Film With Vertical Structure

We propose and demonstrate a Mach-Zehnder modulator in Z-cut lithium niobate thin film (LNTF) with a vertical electric field structure. By placing the metal electrodes on top and bottom of the waveguide rather than the usual lateral configuration, the electric field is fully overlapping the optical field. Such a configuration reduces the critical requirement of electrode alignment as needed in X/Y-cut LN based devices. Both the simulation and process details to realize the proposed device are demonstrated. The measured static performance accords well with the simulations. Additionally, we developed a new method to accurately characterize the dynamic performance of the Z-cut LNTF modulator, and the measured tuning efficiency is around 8.84 pm/V. Our proposed device validates the feasibility of integrated Z-cut LNTF based modulators, and will likely extend the research area of integrated lithium niobate photonics.

Astigmatism in the basic Offner spectrometer

The in-plane configuration of the basic Offner spectrometer is revised. The locations of meridional and sagittal images of the slit center are analyzed when the slit is displaced in the axial direction from the usual configuration, whereas its center is kept on the Rowland circle of the concave mirror. This translates the position of the sagittal image plane and allows for the cancellation of astigmatism and meridional coma for two wavelengths while these aberrations are kept small over the whole spectral range. This is accomplished without splitting the concave mirror into two different mirrors, simplifying the design and its practical implementation. A design example is presented with excellent optical performance.

Modelling Fast Response Surface Thermocouple for Plasma Facing Components

Surface eroding thermocouples are developed to measure temperatures and heat fluxes in plasma-facing components of fusion machines, especially in the divertor region. Sensor construction leads to a fast response (8ms) and robust design against heat loads around 10-20MW·m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-2</sup> . Electrical design of surface thermocouples is developed considering compensation needs and currents expected in the plasma edge. Improved sensor performance is obtained by enhancing the thermal contact surface between the divertor mono-block and the thermocouple carrier body through the integration of conductive collet and bush, both made of copper. The thermal response is analyzed through a finite element non-linear transient model simulating heating due to a plasma discharge. The usual configuration with voltage (emf) measured between the two thermocouple ribbons is compared with a simplified single-ribbon design in which the emf is measured between the thermocouple sole inner ribbon and the divertor support. Measurement errors are discussed for both single-ribbon and double-ribbon designs. The installation of surface thermocouples is studied at different poloidal positions of the DTT divertor vertical targets. A sensor layout with 4mm poloidal resolution is proposed to map power density peaks of plasma-wall interactions. Surface thermocouple measurements can provide useful local information for studying divertor physics, scaling for development of future machines, monitoring of local conditions to assist controlled terminations of plasma discharges. Installed with other diagnostics, they can provide crosschecks for calibration and data validation. The design, development, and integration procedure herein described can be applied to other plasma-facing component embedded sensors measuring plasma parameters like Langmuir probes.

Microstructural characteristics of chronic infarct segments assessed using diffusion tensor imaging

Abstract Funding Acknowledgements Type of funding sources: Foundation. Main funding source(s): British Heart Foundation Background The microstructural changes following myocardial infarction (MI) can be characterised in-vivo with cardiac diffusion tensor imaging (cDTI) imaging, using mean diffusivity (MD), fractional anisotropy (FA), secondary eigenvector angle (E2A) and helix angle (HA) maps. In this study, we use cDTI to explore the microstructural differences between subendocardial and transmural chronic infarct segments. Method Twenty STEMI patients (15 men, 5 women, mean age 59) underwent 3T CMR scan at 3 months following presentation (mean interval 107 ± 18 days). Scan protocol included: second order motion compensated (M012) free-breathing spin echo DTI (3 slices, 18 diffusion directions at b-values 100s/mm2[3], 200s/mm2[3] and 500s/mm2[12], acquired resolution was 2.20x2.27x8mm3; cine gradient echo and LGE imaging. Average MD, FA, E2A and HA parameters were calculated on a 16-AHA-segmental level. HA maps were described by dividing values into left-handed HA (LHM, -90° &amp;lt; HA &amp;lt; -30°), circumferential HA (CM, -30° &amp;lt; HA &amp;lt; 30°), and right-handed HA (RHM, 30° &amp;lt; HA &amp;lt; 90°) and reported as relative proportions. Infarct segments were identified using LGE; patients were categorised according to the maximal transmurality of their infarct segments, into subendocardial (&amp;lt;50% LGE) or transmural (&amp;gt;50% LGE) MI. Results DTI acquisition was successful in all patients (acquisition time 13 ± 5mins). Ten patients had transmural MI. The results are shown in table 1. Transmurally infarcted segments had significantly lower FA (FA subendocardial MI = 0.27 ± 0.04, FA transmural MI = 0.23 ± 0.02, p &amp;lt; 0.01), lower E2A (E2A subendocardial MI = 47 ± 7°, E2A transmural MI = 38 ± 6°, p &amp;lt; 0.01) and lower proportions of right-handed cardiomyocytes (RHM subendocardial MI = 21 ± 5%, RHM transmural MI = 14 ± 5%, p &amp;lt; 0.01) than subendocardial infarct segments. Conclusion Compared to subendocardial MI segments, the diffusion of water molecules is more isotropic in transmurally infarcted myocardium as evidenced by lower FA values, signifying increased structural disarray. The significantly lower E2A values suggest that laminar sheetlets of transmural infarct segments remain fixed at shallower angles during systole and are unable to reach their usual contractile configuration. The lower proportions of RHM on HA maps highlight the significantly greater loss of subendocardial cardiomyocytes in transmural infarct segments. Further studies are required to assess if these segmental changes can be predictive of long-term LV remodelling.

Connection System for Small and Medium-Size Wind Generators through the Integration in an MMC and NLC Modulation

This paper presents a new way of organizing a wind farm with a large number of small to medium-sized turbines. Each wind generator has been included in a switching module of a modular multilevel converter (MMC), which generates the output voltage by near level control (NLC). The proposed topology reduces the number of semiconductors required, switching losses, and voltage filtering requirements. This topology replaces the usual configuration where each wind turbine is connected to a three-phase two-level back-to-back converter plus a filter and then connected in parallel with the other wind generators. To test the topology and its control performance, a case has been developed and simulated for generator configurations producing the same power, for generation imbalances between phases and for imbalances between arms. The analysis of the data shows that the converter works correctly and that it can deliver power to the grid in a balanced way even if the generation has imbalances. The generation imbalances between phases are compensated through the average value of the circulating current, while the imbalances between arms are compensated through the 50 Hz circulating current.

The Pulmonary Venous Return from Normal to Pathological—Clinical Correlations and Review of Literature

Pulmonary veins carry oxygenated blood from lungs to the left atrium of the heart. The anatomy of the pulmonary veins is variable with some anatomic variants. In clinical practice the difference between the normal anatomy of pulmonary veins with its variants and abnormal anatomy is very important for clinicians. Variants of pulmonary veins may occur in number, diameter and normal venous return. We present a case report and a review of the literature with the pulmonary venous return that deviates from the usual anatomical configuration and ranges from normal variant drainage to anomalous pulmonary—systemic communication. Initially, it was considered as an anatomical variant of the pulmonary venous return associated with the persistence of the left superior vena cava. Upon detailed exploration it was established that it was an anomaly of the pulmonary venous return which led in time to the installation of its complications. Diagnosis can be difficult, sometimes missed, or only made late in adulthood when complications were installed. Knowledge of variant anatomy and anomalous pulmonary venous return play a crucial role in the diagnostically challenging patient.

Double pulse laser-induced plasmas on W and Al by ps-LIBS: Focus on the plasma-second pulse interaction

The LIBS (laser-induced breakdown spectroscopy) method can be implemented to determine the multi-elemental composition of solid samples. Unfortunately, the precision of the usual LIBS configuration (single pulse) is rather low for light elements in metallic matrices. The double pulse configuration can help to overcome this difficulty. Indeed, the electron temperature and density are significantly increased by the second pulse absorbed by the plasma produced by the first pulse which leads to a higher signal-to-noise ratio. The present paper reports preliminary results in double pulse configuration on fusion-relevant materials, i.e. aluminum (considered as a beryllium surrogate) and tunsgten, in the perspective of the test of this technique to measure in situ the hydrogen isotopes concentration of the divertor and the first wall of an ITER-like tokamak.The plasma spectroscopic analysis is performed to derive the gain in electron density reached by the absorption of the second pulse. In parallel, the spectral absorptivity of the plasma regarding the second pulse is determined to correlate the electron density dynamics to the energy deposit. The absorption by the plasma of the second pulse is then quantified at the atomic and macroscopic scales.