DocumentCode :
864481
Title :
Electron Capture and Loss Processes in Heavy Ion and Molecular Ion Collisions with Solids
Author :
Latz, R. ; Schader, J. ; Frischkorn, H.J. ; Koschar, P. ; Groeneveld, K.-O.
Author_Institution :
Institut fÿr Kernphysik, Universitÿt Frankfurt Frankfurt/M., Germany
Volume :
30
Issue :
2
fYear :
1983
fDate :
4/1/1983 12:00:00 AM
Firstpage :
913
Lastpage :
915
Abstract :
Angular (¿) and velocity (ve) distributions of convoy electrons have been measured with monoatomic and molecular projectile ions (H+, D+, H+2, D+2, H+2, He+, He++ at 1.7 MeV/U and U+44, Ti+14 at 1.4 MeV/U) as a function of the projectile dwell time tD in carbon foils (2 to 50 ¿g/cm2). The spectra with light projectiles from carbon foils are compared with those of gaseous CH4 targets. For the light and molecular projectiles the shapes and yield of convoy electrons depend strongly on the dwell time. A narrow, strongly ¿-dependent contribution at Ve = vp can be distinguished from a ¿-independent part at Ve < vp indicating different production mechanisms. A relation is presented which connects the yield of loss electrons from projectiles with the transmission of projectiles and electrons through solids. The yield of electrons in the spectrum for H+2 at ve = vp and under zero degrees is found to be more than about 20 times as large as is expected from the contribution of loss electrons in last layer collisions.
Keywords :
Area measurement; Density measurement; Electron emission; Production; Projectiles; Radioactive decay; Shape; Solids; Time measurement; Velocity measurement;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.1983.4332412
Filename :
4332412
Link To Document :
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