Phys. Rev. A 75, 042706 (2007) [7 pages]Single- and double-electron capture cross sections for slow He2+ impact on O2, H2, and D2Received 2 February 2007; published 13 April 2007 Single- and double-electron capture cross sections have been measured for He2+ impact on O2, H2, and D2 at impact energies smaller than 2 keV∕amu. The method applied combines the collection of slow product ions and electrons with primary ion-beam attenuation and stopping in a differentially pumped target gas chamber. Comparison with previous experimental and theoretical results is made. For He2+ collisions with H2 we find that double-electron capture is more important than single-electron capture below 0.2 keV∕amu. This result is also confirmed by cross-section measurements for He2+ on D2. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.75.042706
DOI:
10.1103/PhysRevA.75.042706
PACS:
34.50.−s, 34.70.+e, 39.90.+d
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.