Published July 1, 1988 | Version v1
Journal article Metadata-only

Collision-induced dissociation processes of Nb+4 and Fe+4: Fission vs evaporation

Creators

  • 1. Department of Chemistry, University of California, Berkeley, California 94720 and Department of Chemistry, University of Utah, Salt Lake City, Utah 84112

Description

Collision-induced dissociation (CID) of Nb+4 and Fe+4 with Xe has been studied over an energy range of 0--20 eV with a new instrument designed to study cold cluster ions. The energy dependences of the cross sections are presented. It is found that the lowest energy pathway for Nb+4 CID is fragmentation into molecular ions, or fission. Analysis of this process yields D0(Nb+2--Nb2) = 4.3 +- 0.3 eV. Fe+4, on the other hand, fragments only by sequential loss of Fe. Analysis of the lowest energy process gives D0(Fe+3--Fe) = 1.8 +- 0.2 eV. No evidence for molecular Fe/sub n/ fragments is observed

Additional details

Publishing Information

Journal Title
J. Chem. Phys.
Journal Volume
89
Journal Issue
1
Series
J. Chem. Phys.
Journal Page Range
610-611
ISSN
0021-9606
CODEN
JCPSA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
19079992
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Descriptors DEI
DISSOCIATION; DISSOCIATION ENERGY; ION BEAMS; ION-ATOM COLLISIONS; IRON IONS; MECHANICAL FRAGMENTATION; MOLECULAR IONS; NIOBIUM IONS; XENON
Descriptors DEC
ATOM COLLISIONS; ATOMIC IONS; BEAMS; CHARGED PARTICLES; COLLISIONS; ELEMENTS; ENERGY; ION COLLISIONS; IONS; NONMETALS; RARE GASES