Binary-encounter electron emission after fast heavy-ion impact on complex rare- and molecular-gas targets
- Gesellschaft fuer Schwerionenforschung m.b.H., Planckstrasse 1, D-64291 Darmstadt (Germany)
- J. R. Macdonald Laboratory, Kansas State University, Manhattan, Kansas 66506 (United States)
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
- Institut fuer Kernphysik, August-Euler-Strasse 6, D-60486 Frankfurt (Germany)
Doubly differential cross sections (DDCSs) for electron emission have been measured for collisions of 3.6 MeV/u Ne{sup 10+}, Xe{sup 40+} and 5.9 MeV/u U{sup 29+} on neon, xenon, water, ethanol, methanol, propanol, C{sub 2}F{sub 6}, SF{sub 6}, and C{sub 3}F{sub 8}. Electrons ejected with emission angles between 0{degree} and 180{degree} with respect to the ion beam axis have been recorded simultaneously using a toroidal electron spectrometer. We analyze the singly differential cross section (SDCS) for binary encounter electron (BE{ital e}) production as a function of target electron number and laboratory emission angle. We find that there exists a linear scaling of the BE{ital e} SDCS with the number of electrons bound in the target with an energy lower than the reduced projectile energy. The enhancement of BE{ital e} production in the forward direction in collisions with partially stripped ions is studied for the different projectiles and targets and compared to theoretical calculations. {copyright} {ital 1998} {ital The American Physical Society}
- OSTI ID:
- 641633
- Journal Information:
- Physical Review A, Vol. 58, Issue 3; Other Information: PBD: Sep 1998
- Country of Publication:
- United States
- Language:
- English
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