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Double-to-single ionization ratios of helium colliding with low-to-intermediate velocity charged ions

✍ Scribed by Shao, J. X.; Chen, X. M.; Ding, B. W.


Book ID
120238344
Publisher
The American Physical Society
Year
2007
Tongue
English
Weight
239 KB
Volume
75
Category
Article
ISSN
1050-2947

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The established high-velocity limit of the double-to-single ionization cross-section ratio for helium is f 2.5 = 10 y3 . It was claimed that the highest projectile charge state for which this limit can be reached is around Z s 13. In this Letter we p give some arguments that in ultrarelativistic col