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Title: Heavy-ion induced 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}/d/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:
902329
Report Number(s):
UCRL-JRNL-226935
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US0702830
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters, vol. 98, N/A, February 9, 2007, pp. 064801; Journal Volume: 98
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; 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, Bellachioma, M C, Bender, M, Bieniosek, F M, Hedlund, E, Kramer, A, Kwan, J, Malyshev, O B, Prost, L, Seidl, P A, Westenskow, G, and Westerberg, L. Heavy-ion induced electronic desorption of gas from metals. United States: N. p., 2006. Web.
Molvik, A W, Kollmus, H, Mahner, E, Covo, M K, Bellachioma, M C, Bender, M, Bieniosek, F M, Hedlund, E, Kramer, A, Kwan, J, Malyshev, O B, Prost, L, Seidl, P A, Westenskow, G, & Westerberg, L. Heavy-ion induced electronic desorption of gas from metals. United States.
Molvik, A W, Kollmus, H, Mahner, E, Covo, M K, Bellachioma, M C, Bender, M, Bieniosek, F M, Hedlund, E, Kramer, A, Kwan, J, Malyshev, O B, Prost, L, Seidl, P A, Westenskow, G, and Westerberg, L. Tue . "Heavy-ion induced electronic desorption of gas from metals". United States. doi:. https://www.osti.gov/servlets/purl/902329.
@article{osti_902329,
title = {Heavy-ion induced electronic desorption of gas from metals},
author = {Molvik, A W and Kollmus, H and Mahner, E and Covo, M K and Bellachioma, M C and Bender, M and Bieniosek, F M and Hedlund, E and Kramer, A and Kwan, J and Malyshev, O B and Prost, L and Seidl, P A and Westenskow, G and Westerberg, L},
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}/d/dx) of the ions slowing down in matter; but it varies only little with the ion impact angle, unlike electronic sputtering.},
doi = {},
journal = {Physical Review Letters, vol. 98, N/A, February 9, 2007, pp. 064801},
number = ,
volume = 98,
place = {United States},
year = {Tue Dec 19 00:00:00 EST 2006},
month = {Tue Dec 19 00:00:00 EST 2006}
}