Abstract
Electron capture reactions for 3He2+ collisions on He at impact energies in the range 40 keV-300 keV have been studied using the Cold Target Recoil-Ion Momentum Spectroscopy setup which has recently became operational at the Centro Atomico Bariloche. State-selective charge exchange cross sections were obtained and in this work we present recoil-ion transverse momentum distributions. For targets with residual thermal motion, we show that the implementation of a back-projection algorithm based on the transverse momentum distribution component along a direction perpendicular to the jet direction provides results in agreement with those obtained by using previously cooled targets. Present results nicely fit the gaps in the datasets already published by other laboratories and are found to be in good agreement with classical trajectory Monte Carlo simulations.
Highlights
During the past 20 years the cold-target recoil-ion momentum spectroscopy (COLTRIMS) method has been implemented in several laboratories worldwide and has led to an important advance in our current understanding of several atomic and molecular collision processes [1,2,3,4,5,6,7,8]
The back-projection algorithm In figure 1 we show the transverse momentum distribution at impact energy of 60 keV
Present experimental data for the transverse momentum distributions are compared to those obtained by Mergel et al.[13] at 62.5 keV/amu with a 14 K external cooling system that provides an inner target temperature of 0.1 K. dCTMC results are shown and found to be in good agreement with the data, with the exception of the deep structure at 1.5 a.u. that cannot be reproduced by the simulation
Summary
This content has been downloaded from IOPscience. Please scroll down to see the full text. Ser. 583 012015 (http://iopscience.iop.org/1742-6596/583/1/012015) View the table of contents for this issue, or go to the journal homepage for more. Download details: IP Address: 200.49.224.88 This content was downloaded on 23/02/2015 at 12:34 Please note that terms and conditions apply
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