Positron detrapping from defects: A thermodynamic approach

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • University of Jyväskylä
  • Nordita

Abstract

The rate of positron detrapping in thermal equilibrium from lattice defects has been calculated by relating it to the specific trapping rate. The results for vacancies, dislocations and surfaces each show a different temperature dependence for the escape rate. For vacancies a measure of the importance of the detrapping can be obtained from the ratio of the vacancy formation energy to the positron binding energy in the defect. The positronium desorption rate from a surface is also calculated and agreement with experimental results is found.

Details

Original languageEnglish
Pages (from-to)93-100
Number of pages8
JournalApplied Physics A: Solids and Surfaces
Volume26
Issue number2
Publication statusPublished - Oct 1981
MoE publication typeA1 Journal article-refereed

    Research areas

  • 71.60+Z, 78.70B

ID: 6594732