Observation of direct ionization of He by highly charged ions at low velocity
Journal Article
·
· Physical Review Letters
- J. R. Macdonald Laboratory, Kansas State University, Manhattan, Kansas 66506 (United States)
We have observed direct target ionization of He at low velocity (0.2 to 1.7 a.u.) by highly charged ions of C{sup 6+}, N{sup 7+}, O{sup 8+}, Ar{sup 16+}, and Xe{sup 30+}. The measured single ionization cross sections increase rapidly with increasing velocity. The cross sections, divided by the charge of the incident projectile, are found to lie on a universal curve when plotted versus the ratio of the projectile velocity to the classical Bohr-Lindhard velocity limit for ionization. Impact parameter information was determined for O{sup 8+} on He collisions and suggests that single target ionization happens over an impact parameter range very similar to that for single capture.
- OSTI ID:
- 90572
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 75; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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