Multiple-ionization and dissociation dynamics of a rare gas dimer induced by highly charged ion impact - Archive ouverte HAL Access content directly
Conference Papers Year : 2011

Multiple-ionization and dissociation dynamics of a rare gas dimer induced by highly charged ion impact

, (1) , (1) , , , (2) , (2) , (2) , (2) , (2) , (2) , (2) , (2)
1
2

Abstract

Low-energy collision experiments of an argon dimer with Ar(9+) were performed to measure branching ratios and kinetic energy release (KER) distributions for multiply ionized dimers. Two well-separated KER peaks are observed at 3.8 and 5.3 eV for the doubly ionized dimers, and are assigned to direct Coulombic dissociation and radiative electron capture followed by ionic dissociation, respectively. For the dissociation channels Ar(2+) + Ar(+), Ar(3+) + Ar(+) and Ar(2+) + Ar(2+), the KER distributions show a single peak, the positions of which agree well with those expected for Coulombic dissociation. The branching ratio of asymmetric charge sharing, Ar(3+) + Ar(+), is larger than that of symmetric charge sharing, Ar(2+) + Ar(2+). These results represent unambiguous evidence of a strong limitation of charge mobility across the Ar dimer.

Keywords

Dates and versions

in2p3-00643217 , version 1 (21-11-2011)

Identifiers

Cite

J. Matsumoto, A. Leredde, X. Fléchard, K. Hayakawa, H. Shiromaru, et al.. Multiple-ionization and dissociation dynamics of a rare gas dimer induced by highly charged ion impact. 15th International Conference on the Physics of Highly Charged Ions, HCI2010, 2010, Shangai, China. pp.014016, ⟨10.1088/0031-8949/2011/T144/014016⟩. ⟨in2p3-00643217⟩
40 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More