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_{e}/dx) of the ions slowing down in matter; but it varies only little with the ion impact angle, unlike electronic sputtering.
authors.affiliation: Heavy-Ion Fusion Science Virtual National Laboratory, Berkeley, California 94720, USA.
authors.forename: A W
authors.initials: AW
authors.lastname: Molvik
authors.forename: H
authors.initials: H
authors.lastname: Kollmus
authors.forename: E
authors.initials: E
authors.lastname: Mahner
authors.forename: M Kireeff
authors.initials: MK
authors.lastname: Covo
authors.forename: M C
authors.initials: MC
authors.lastname: Bellachioma
authors.forename: M
authors.initials: M
authors.lastname: Bender
authors.forename: F M
authors.initials: FM
authors.lastname: Bieniosek
authors.forename: E
authors.initials: E
authors.lastname: Hedlund
authors.forename: A
authors.initials: A
authors.lastname: Krämer
authors.forename: J
authors.initials: J
authors.lastname: Kwan
authors.forename: O B
authors.initials: OB
authors.lastname: Malyshev
authors.forename: L
authors.initials: L
authors.lastname: Prost
authors.forename: P A
authors.initials: PA
authors.lastname: Seidl
authors.forename: G
authors.initials: G
authors.lastname: Westenskow
authors.forename: L
authors.initials: L
authors.lastname: Westerberg