Heavy-ion induced electronic desorption of gas from metals
Journal Article
·
· Physical Review Letters
OSTI ID:902329
During heavy ion operation in several particle accelerators world-wide, dynamic pressure rises of orders of magnitude were triggered by lost beam ions that bombarded the vacuum chamber walls. This ion-induced molecular desorption, observed at CERN, GSI, and BNL, can seriously limit the ion beam lifetime and intensity of the accelerator. From dedicated test stand experiments we have discovered that heavy-ion induced gas desorption scales with the electronic energy loss (dE{sub e}/d/dx) of the ions slowing down in matter; but it varies only little with the ion impact angle, unlike electronic sputtering.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 902329
- Report Number(s):
- UCRL-JRNL-226935; PRLTAO; TRN: US0702830
- Journal Information:
- Physical Review Letters, Vol. 98; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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