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 - 1977 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Positron-annihilation momentum profiles in aluminum : Core contribution and the independent-particle model. / Lynn, K. G.; MacDonald, J. R.; Boie, R. A.; Feldman, Leonard C; Gabbe, J. D.; Robbins, M. F.; Bonderup, E.; Golovchenko, J.
In: Physical Review Letters, Vol. 38, No. 5, 1977, p. 241-244.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Positron-annihilation momentum profiles in aluminum
T2 - Core contribution and the independent-particle model
AU - Lynn, K. G.
AU - MacDonald, J. R.
AU - Boie, R. A.
AU - Feldman, Leonard C
AU - Gabbe, J. D.
AU - Robbins, M. F.
AU - Bonderup, E.
AU - Golovchenko, J.
PY - 1977
Y1 - 1977
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0000367589&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000367589&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.38.241
DO - 10.1103/PhysRevLett.38.241
M3 - Article
AN - SCOPUS:0000367589
VL - 38
SP - 241
EP - 244
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 5
ER -