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Title: Electronic Desorption of gas from metals

Abstract

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}/dx) of the ions slowing down in matter; but it varies only little with the ion impact angle, unlike electronic sputtering.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
907844
Report Number(s):
UCRL-JRNL-225817
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US0703331
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 98; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 29 ENERGY PLANNING, POLICY AND ECONOMY; 74 ATOMIC AND MOLECULAR PHYSICS; ACCELERATORS; BNL; CERN; DESORPTION; HEAVY IONS; ION BEAMS; LIFETIME; SLOWING-DOWN; SPUTTERING

Citation Formats

Molvik, A W, Kollmus, H, Mahner, E, Covo, M K, Bender, M, Bieniosek, F M, Kramer, A, Kwan, J, Prost, L, Seidl, P A, and Westenskow, G. Electronic Desorption of gas from metals. United States: N. p., 2006. Web.
Molvik, A W, Kollmus, H, Mahner, E, Covo, M K, Bender, M, Bieniosek, F M, Kramer, A, Kwan, J, Prost, L, Seidl, P A, & Westenskow, G. Electronic Desorption of gas from metals. United States.
Molvik, A W, Kollmus, H, Mahner, E, Covo, M K, Bender, M, Bieniosek, F M, Kramer, A, Kwan, J, Prost, L, Seidl, P A, and Westenskow, G. 2006. "Electronic Desorption of gas from metals". United States. https://www.osti.gov/servlets/purl/907844.
@article{osti_907844,
title = {Electronic Desorption of gas from metals},
author = {Molvik, A W and Kollmus, H and Mahner, E and Covo, M K and Bender, M and Bieniosek, F M and Kramer, A and Kwan, J and Prost, L and Seidl, P A and Westenskow, G},
abstractNote = {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}/dx) of the ions slowing down in matter; but it varies only little with the ion impact angle, unlike electronic sputtering.},
doi = {},
url = {https://www.osti.gov/biblio/907844}, journal = {Physical Review Letters},
issn = {0031-9007},
number = ,
volume = 98,
place = {United States},
year = {Thu Nov 02 00:00:00 EST 2006},
month = {Thu Nov 02 00:00:00 EST 2006}
}