THE EFFECT OF LIGHT ON POSITRON-ANNIHILATION IN NATURAL DIAMOND

Authors
NILEN RWN LAUFF U CONNELL SH STOLL H SIEGLE A SCHNEIDER H CASTELLAZ P KRAFT J BHARUTHRAM K SELLSCHOP JPF SEEGER A
Citation
Rwn. Nilen et al., THE EFFECT OF LIGHT ON POSITRON-ANNIHILATION IN NATURAL DIAMOND, Applied surface science, 116, 1997, pp. 198-202
Citations number
17
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical","Materials Science, Coatings & Films
Journal title
Applied surface science → ACNP
ISSN journal
01694332
Volume
116
Year of publication
1997
Pages
198 - 202
Database
ISI
SICI code
0169-4332(1997)116:<198:TEOLOP>2.0.ZU;2-Z
Abstract
The age-momentum correlation (AMOC) technique of positron annihilation spectroscopy has been used to study a irradiated natural diamond samp le. A light-induced reversible change in both the intensity and the li fetime of the trapped positron component in diamond was observed, No s ignal attributable to positronium was detected in the measurements, su pporting the view that positronium formation does not occur in diamond , The measurements demonstrate the sensitivity of positron annihilatio n to optically active centers in diamond.