Scaling of cross sections in fast collisions between few electron system
Journal Article
·
· Bulletin of the American Physical Society
OSTI ID:281425
Doubly differential cross sections for 0.5 MeV/u hydrogen and helium projectiles colliding with helium have been measured. In order to investigate how projectile electrons influence the ionization cross sections, 15{degrees} electron emission for isotachic H, H{sub 2}{sup +}, H{sub 3}{sup +}, He and He{sup +} impact are compared to results for proton impact. These data demonstrate the importance of two-center electron-electron interactions for very low energy electron emission. The role of screening by the projectile electrons emerges clearly at intermediate energies. In the binary encounter region, ionization by H{sub 2}{sup +} is twice the proton result; H{sub 3}{sup +} is three times the proton result. The data are discussed in terms of available theoretical models.
- OSTI ID:
- 281425
- Report Number(s):
- CONF-9305421--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
- Country of Publication:
- United States
- Language:
- English
Similar Records
Excitation and ionization-excitation of helium by fast electron and proton impact: extreme ultraviolet (EUV) cross section measurements
Scaling of cross sections in ion-atom collisions
Systematics and scaling of differential ionization cross sections in multicharged ion-atom collisions
Conference
·
Fri Dec 30 23:00:00 EST 1994
·
OSTI ID:199636
Scaling of cross sections in ion-atom collisions
Conference
·
Mon Oct 31 23:00:00 EST 1994
·
OSTI ID:39087
Systematics and scaling of differential ionization cross sections in multicharged ion-atom collisions
Journal Article
·
Fri Dec 31 23:00:00 EST 1993
· Physical Review A; (United States)
·
OSTI ID:5338100