Part Of Radiation Energy Research Articles

Emission of a low-power laser-induced vacuum discharge plasma in the EUV and SXR spectral ranges

X-ray spectral characteristics of a vacuum discharge plasma with the storage energy lower than 30 J initiated on an Al or a Fe cathode by a 1012 W/cm2 neodymium laser were studied in the 30 – 300 Å wavelength range. It is shown that both the spectral composition and intensity of radiation of a micropinch plasma produced in the cathode jet of the discharge are determined by parameters of the discharge and laser pulse. These parameters were optimized to achieve a regime in which a considerable part of radiation energy was concentrated in the long-wavelength band of the quasi-continuum (230 - 270 Å and 160 - 200 Å for Al and Fe, respectively), which makes this discharge a source of narrowband X-ray radiation.

Optimization of Production Process of a Semitransparent Layer Containing Foam by Considering Radiation and Using Finite Difference Method

Regarding the importance of radiation in contemporary technology of the world, this paper presents a finite difference solution for geometric optimization of a radiative enclosure. In this regard, produced foams during glass melting process are one of the important factors for optimization of melting process and final product quality. On one hand, these foam causes prevention of some part of radiation energy from combustion to glass melt and also leads to increase in fuel and decrease in furnace output. On the other hand, they put high damages to final glass products. For designing a radiant enclosure, the radiative two-flux equation is coupled with the transient energy equation and radiation transfer equation (RTE).