Positron-electron annihilation momentum transfer to trapped deuterons

The probability of positron annihilation momentum transfer to a trapped deuteron is calculated based on neutron measurements from 2H(d,n)3He reactions in deuterated palladium thin films. Deuterium gas loading in Pd thin films creates a high D/Pd fraction at point defects in the metal lattice. Unmode...

Full description

Saved in:
Bibliographic Details
Published in:AIP advances 2019-11, Vol.9 (11), p.115109-115109-4
Main Authors: Weed, Ryan, Sblendorio, Dante, Machacek, Joshua, Ramamurthy, Bala, Laguisma, Gabrielle
Format: Article
Language:English
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The probability of positron annihilation momentum transfer to a trapped deuteron is calculated based on neutron measurements from 2H(d,n)3He reactions in deuterated palladium thin films. Deuterium gas loading in Pd thin films creates a high D/Pd fraction at point defects in the metal lattice. Unmoderated positrons from a Na-22 source thermalize and are trapped in the same point defects as deuterium in the Pd thin films. Similar to the Mössbauer effect, an interaction with the surrounding crystal lattice allows for conservation of momentum during electron-positron annihilation energy transfer to the trapped deuteron.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.5127534