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Title: Heavy-Ion-Induced Electronic Desorption of Gas from Metals

Abstract

During heavy-ion operation in several particle accelerators worldwide, 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:
; ;  [1];  [2]; ; ; ;  [3];  [4]; ; ;  [1];  [2]; ;  [5];  [6];  [7]
  1. Heavy-Ion Fusion Science Virtual National Laboratory, Berkeley, California 94720 (United States)
  2. (United States)
  3. GSI, Planckstrasse 1, 64291 Darmstadt (Germany)
  4. CERN, 1211 Geneva 23 (Switzerland)
  5. Uppsala University, 751 21, Uppsala (Sweden)
  6. CCLRC Daresbury Laboratory, Warrington (United Kingdom)
  7. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
Publication Date:
OSTI Identifier:
20955448
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevLett.98.064801; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; BNL; CERN; DESORPTION; ENERGY LOSSES; HEAVY IONS; ION BEAMS; LIFETIME; MATTER; SLOWING-DOWN; SPUTTERING

Citation Formats

Molvik, A. W., Covo, M. Kireeff, Westenskow, G., Lawrence Livermore National Laboratory, Livermore, California 94550, Kollmus, H., Bellachioma, M. C., Bender, M., Kraemer, A., Mahner, E., Bieniosek, F. M., Kwan, J., Seidl, P. A., Lawrence Berkeley National Laboratory, Berkeley, California 94720, Hedlund, E., Westerberg, L., Malyshev, O. B., and Prost, L. Heavy-Ion-Induced Electronic Desorption of Gas from Metals. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.064801.
Molvik, A. W., Covo, M. Kireeff, Westenskow, G., Lawrence Livermore National Laboratory, Livermore, California 94550, Kollmus, H., Bellachioma, M. C., Bender, M., Kraemer, A., Mahner, E., Bieniosek, F. M., Kwan, J., Seidl, P. A., Lawrence Berkeley National Laboratory, Berkeley, California 94720, Hedlund, E., Westerberg, L., Malyshev, O. B., & Prost, L. Heavy-Ion-Induced Electronic Desorption of Gas from Metals. United States. doi:10.1103/PHYSREVLETT.98.064801.
Molvik, A. W., Covo, M. Kireeff, Westenskow, G., Lawrence Livermore National Laboratory, Livermore, California 94550, Kollmus, H., Bellachioma, M. C., Bender, M., Kraemer, A., Mahner, E., Bieniosek, F. M., Kwan, J., Seidl, P. A., Lawrence Berkeley National Laboratory, Berkeley, California 94720, Hedlund, E., Westerberg, L., Malyshev, O. B., and Prost, L. Fri . "Heavy-Ion-Induced Electronic Desorption of Gas from Metals". United States. doi:10.1103/PHYSREVLETT.98.064801.
@article{osti_20955448,
title = {Heavy-Ion-Induced Electronic Desorption of Gas from Metals},
author = {Molvik, A. W. and Covo, M. Kireeff and Westenskow, G. and Lawrence Livermore National Laboratory, Livermore, California 94550 and Kollmus, H. and Bellachioma, M. C. and Bender, M. and Kraemer, A. and Mahner, E. and Bieniosek, F. M. and Kwan, J. and Seidl, P. A. and Lawrence Berkeley National Laboratory, Berkeley, California 94720 and Hedlund, E. and Westerberg, L. and Malyshev, O. B. and Prost, L.},
abstractNote = {During heavy-ion operation in several particle accelerators worldwide, 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 = {10.1103/PHYSREVLETT.98.064801},
journal = {Physical Review Letters},
number = 6,
volume = 98,
place = {United States},
year = {Fri Feb 09 00:00:00 EST 2007},
month = {Fri Feb 09 00:00:00 EST 2007}
}