ANGULAR-DISTRIBUTION OF 2-PHOTON POSITRON-ANNIHILATION IN LOW-ENERGY POSITRON SCATTERING BY THE HYDROGEN MOLECULAR ION

Authors
ARMOUR EAG CARR JM
Citation
Eag. Armour et Jm. Carr, ANGULAR-DISTRIBUTION OF 2-PHOTON POSITRON-ANNIHILATION IN LOW-ENERGY POSITRON SCATTERING BY THE HYDROGEN MOLECULAR ION, Journal of physics. B, Atomic molecular and optical physics, 30(6), 1997, pp. 1611-1618
Citations number
18
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Optics
Journal title
Journal of physics. B, Atomic molecular and optical physics → ACNP
ISSN journal
09534075
Volume
30
Issue
6
Year of publication
1997
Pages
1611 - 1618
Database
ISI
SICI code
0953-4075(1997)30:6<1611:AO2PIL>2.0.ZU;2-N
Abstract
Calculations are carried out to determine the angular distribution of gamma rays resulting from positron annihilation when low-energy positr ons are scattered by the hydrogen molecular ion. Angular distributions calculated using wavefunctions from a variational Kohn calculation ar e compared with those obtained using the Coulomb-Born approximation. T he angular distribution function calculated with the most accurate wav efunction gives a half width half maximum value of 3.42 mrad for incid ent positrons with momentum 0.8 a(0)(-1).