ELECTRONIC SPUTTERING OF NANOMETRIC CLUSTER IONS OF GOLD FROM ULTRADISPERSED TARGETS OF GOLD BY FISSION FRAGMENTS - MASSES AND ENERGIES OF CLUSTER IONS

Authors
BARANOV I BOGDANOV S NOVIKOV A OBNORSKII V KOZLOV B
Citation
I. Baranov et al., ELECTRONIC SPUTTERING OF NANOMETRIC CLUSTER IONS OF GOLD FROM ULTRADISPERSED TARGETS OF GOLD BY FISSION FRAGMENTS - MASSES AND ENERGIES OF CLUSTER IONS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 122(3), 1997, pp. 329-334
Citations number
10
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
122
Issue
3
Year of publication
1997
Pages
329 - 334
Database
ISI
SICI code
0168-583X(1997)122:3<329:ESONCI>2.0.ZU;2-K
Abstract
Sputtering of superheavy negative cluster ions of gold from ultradispe rsed targets - gold islet films (islet sizes being 3-20 nm) by Cf-252 fission fragments is studied. Mass-to-charge ratio (m/q) of the desorb ed particles within the range 1 x 10(5)-5 x 10(7) amu/e as well as the ir initial energies are measured by means of a special mass-spectrogra ph. It is established that desorbed cluster ions have initial kinetic energies of tens-hundreds eV per charge unit. With this, small cluster ions have larger initial energies per charge unit than larger cluster ions. It is also shown that for similar to 70% cluster ions desorbed from the target with islets sized 7.5-15 nm m/q is 6 x 10(5)-4 x 10(6) amu/e which is on average 5-10 times smaller than the mass values for the islets. The results are discussed.