Metastable decay of photoionized niobium clusters: Clusters within a cluster

Journal Article · Fri Jul 15 00:00:00 EDT 1988 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.455201· OSTI ID:7256511

Cole, S K; Liu, K

The photoinduced metastable ion fragmentation of niobium clusters has been found to closely correlate with the laser vaporization source conditions. The experimental evidence indicates the clusters agglomerate in the supersonic expansion. These agglomerated clusters exhibit rather unique behavior for a transition metal system. Both evaporation and fission fragmentation are observed. Two color MPI studies reveal the existence of long lived neutral intermediate states. Also, the kinetic energy release is extremely small, <10 meV, and independent of the excitation energy. The concept of clusters within a cluster, i.e., agglomerated clusters, is introduced to rationalize many experimental findings.

• Research Organization: Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 7256511
• Journal Information: J. Chem. Phys.; (United States), Vol. 89:2
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NIOBIUM
AGGLOMERATION
PHOTOIONIZATION
NIOBIUM IONS
DECAY
METASTABLE STATES
LASER RADIATION
MULTI-PHOTON PROCESSES
CHARGED PARTICLES
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
EXCITED STATES
IONIZATION
IONS
METALS
RADIATIONS
TRANSITION ELEMENTS
400201* - Chemical &amp; Physicochemical Properties