Positron binding to atomic zinc

Citation
J. Mitroy et G. Ryzhikh, Positron binding to atomic zinc, J PHYS B, 32(5), 1999, pp. 1375-1383
Citations number
27
Categorie Soggetti
Physics
Journal title
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
ISSN journal
09534075 → ACNP
Volume
32
Issue
5
Year of publication
1999
Pages
1375 - 1383
Database
ISI
SICI code
0953-4075(19990314)32:5<1375:PBTAZ>2.0.ZU;2-6
Abstract
The fixed-core stochastic variational method has been used to predict the e xistence of a Zne(+) bound state with a binding energy of 0.001 425 Hartree and a 2 gamma annihilation rate of 0.248 x 10(9) s(-1). The underlying val idity of the model Hamiltonian was substantiated by predictions of the bind ing energies of Zn and Zn+. The convergence of the binding energy was very slow and further minimization of the energy was halted once a formal demons tration of binding had been achieved. The results of a single-positron mode l calculation of Zne(+) taken in conjunction with an examination of the con vergence pattern suggest that the true binding energy of the underlying mod el Hamiltonian is 0.0005-0.0010 Hartree larger than the quoted value.