Volume 49, Number 1, January I 2000
|Page(s)||41 - 47|
|Section||Atomic and molecular physics|
|Published online||01 September 2002|
Molecular fragmentation by slow highly charged ion impact
University of Missouri-Rolla - Rolla, MO 65401, USA
2 KVI Atomic Physics, Rijksuniversiteit Groningen 9747AA Groningen, The Netherlands
Accepted: 1 November 1999
An experimental and theoretical study is presented for fragmentation of D2 after double-electron removal by slow (1–20 kV) highly charged ion impact (Xe10+/19+ and O5+/6+). As the ratio of the charge state to speed of the incoming ion increases, the D+ fragment energies deviate significantly from those found for isolated-molecule Franck-Condon transitions between states of D2. Both higher and lower fragment energies are observed, in accordance with predictions based on a Classical Trajectory Monte Carlo model. These energies result from the collisional momentum transfer to the center of mass of the molecule combined with the normal two-body breakup of D+ + D+. At the lowest energies, theory predicts a deviation from this vector addition picture due to the high field of the slow projectile.
PACS: 34.50.Gb – Electronic excitation and ionization of molecules; intermediate molecular states (including lifetimes, state mixing, etc.) / 34.70.+e – Charge transfer / 82.30.Fi – Ion-molecule, ion-ion, and charge-transfer reactions
© EDP Sciences, 2000
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.