Heavy-Ion-Induced Electronic Desorption of Gas from Metals

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 lifet...

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Detalles Bibliográficos
Autores principales: Molvik, A W, Kollmus, H, Mahner, E, Kireeff Covo, M, Bellachioma, M C, Bender, M, Bieniosek, F M, Hedlund, E, Krämer, A, Kwan, J, Malyshev, O B, Prost, L, Seidl, P A, Westenskow, G, Westerberg, L
Lenguaje:eng
Publicado: 2007
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.98.064801
http://cds.cern.ch/record/1056197
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author Molvik, A W
Kollmus, H
Mahner, E
Kireeff Covo, M
Bellachioma, M C
Bender, M
Bieniosek, F M
Hedlund, E
Krämer, A
Kwan, J
Malyshev, O B
Prost, L
Seidl, P A
Westenskow, G
Westerberg, L
author_facet Molvik, A W
Kollmus, H
Mahner, E
Kireeff Covo, M
Bellachioma, M C
Bender, M
Bieniosek, F M
Hedlund, E
Krämer, A
Kwan, J
Malyshev, O B
Prost, L
Seidl, P A
Westenskow, G
Westerberg, L
author_sort Molvik, A W
collection CERN
description 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 (dEe/dx) of the ions slowing down in matter; but it varies only little with the ion impact angle, unlike electronic sputtering.
id cern-1056197
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2007
record_format invenio
spelling cern-10561972019-09-30T06:29:59Zdoi:10.1103/PhysRevLett.98.064801http://cds.cern.ch/record/1056197engMolvik, A WKollmus, HMahner, EKireeff Covo, MBellachioma, M CBender, MBieniosek, F MHedlund, EKrämer, AKwan, JMalyshev, O BProst, LSeidl, P AWestenskow, GWesterberg, LHeavy-Ion-Induced Electronic Desorption of Gas from MetalsAccelerators and Storage RingsDuring 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 (dEe/dx) of the ions slowing down in matter; but it varies only little with the ion impact angle, unlike electronic sputtering.oai:cds.cern.ch:10561972007
spellingShingle Accelerators and Storage Rings
Molvik, A W
Kollmus, H
Mahner, E
Kireeff Covo, M
Bellachioma, M C
Bender, M
Bieniosek, F M
Hedlund, E
Krämer, A
Kwan, J
Malyshev, O B
Prost, L
Seidl, P A
Westenskow, G
Westerberg, L
Heavy-Ion-Induced Electronic Desorption of Gas from Metals
title Heavy-Ion-Induced Electronic Desorption of Gas from Metals
title_full Heavy-Ion-Induced Electronic Desorption of Gas from Metals
title_fullStr Heavy-Ion-Induced Electronic Desorption of Gas from Metals
title_full_unstemmed Heavy-Ion-Induced Electronic Desorption of Gas from Metals
title_short Heavy-Ion-Induced Electronic Desorption of Gas from Metals
title_sort heavy-ion-induced electronic desorption of gas from metals
topic Accelerators and Storage Rings
url https://dx.doi.org/10.1103/PhysRevLett.98.064801
http://cds.cern.ch/record/1056197
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