Temperature Dependence of Positron Annihilation Rates in Noble Gases
Journal Article
·
· Physical Review Letters
- Physics Department, University of California, San Diego, California 92093-0319 (United States)
The dependence of positron annihilation rates on temperature has been measured for the noble gases. These measurements were carried out using a new technique which, for the first time, makes the positron energy range between {ital k}{sub {ital BT}}=0.025 and 1 eV accessible to experiments. Positrons in a Penning trap are heated to about 1 eV, and then cool to room temperature by collisions while maintaining a Maxwellian velocity distribution. The positron annihilation rate is measured during the cooling. Experimental data are in good agreement with theoretical calculations. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 385779
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 14 Vol. 77; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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