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 |
|---|---|
| Pages (from-to) | 241-244 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 38 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Jan 1 1977 |
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Lynn, K. G., MacDonald, J. R., Boie, R. A., Feldman, L. C., Gabbe, J. D., Robbins, M. F., Bonderup, E., & Golovchenko, J. (1977). Positron-annihilation momentum profiles in aluminum: Core contribution and the independent-particle model. Physical review letters, 38(5), 241-244. https://doi.org/10.1103/PhysRevLett.38.241