Abstract
The momentum profiles from positron annihilation with core electrons in Al have been observed with a recently developed two-detector Doppler-broadening technique. Independent-particle-model (IPM) calculations are in good agreement with the experimental results beyond twice the Fermi momentum and suggest the absence of strong positron-electron correlation effects in this region. Comparisons of calculations with properly normalized momentum profiles indicate that high-momentum core contributions may provide information on the nature of vacancy-type defects and self-trapping effects.
Original language | English |
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Pages (from-to) | 241-244 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 38 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1977 |
ASJC Scopus subject areas
- Physics and Astronomy(all)