PROJECTILE ENERGY-DEPENDENCE OF THE CONTRIBUTIONS OF DIFFERENT MECHANISMS TO CUSP ELECTRON PRODUCTION IN HE-] AR COLLISIONS( )

Authors
ZAVODSZKY PA SARKADI L TANIS JA BERENYI D PALINKAS J PLANO VL GULYAS L TAKACS E TOTH L
Citation
Pa. Zavodszky et al., PROJECTILE ENERGY-DEPENDENCE OF THE CONTRIBUTIONS OF DIFFERENT MECHANISMS TO CUSP ELECTRON PRODUCTION IN HE-] AR COLLISIONS( ), Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 79(1-4), 1993, pp. 67-70
Citations number
10
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
79
Issue
1-4
Year of publication
1993
Pages
67 - 70
Database
ISI
SICI code
0168-583X(1993)79:1-4<67:PEOTCO>2.0.ZU;2-9
Abstract
The energy spectra of cusp electrons from He+ --> Ar collisions have b een measured in coincidence with the outgoing charge state selected He -0, He-1+, He2+ projectiles in the 18.75-75 keV/u energy range. The el ectron capture to the continuum (ECC), electron loss to the continuum (ELC), and transfer ionization (TI) reaction channels have been identi fied. In the energy range studied ECC decreases from 86% to 80% and EL C increases strongly from 2.2% to 19.4% with increasing energy. At 18. 75 keV/u TI contributes about 12% to the total cusp electron yield whe reas at 75 keV/u this fraction decreases to 1.2%. A strong target gas pressure dependence was found for the TI fraction.