Kshirsagar, Anjali ; Kanhere, D. G. ; Singru, R. M. (1986) Two-photon momentum density and angular correlation of positron annihilation radiation in Pd and PdH Physical Review B, 34 (2). pp. 853-858. ISSN 0163-1829
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Official URL: http://prb.aps.org/abstract/PRB/v34/i2/p853_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.34.853
Abstract
The positron wave function and two-photon momentum density (TPMD) in Pd and PdH are calculated theoretically with the use of the augmented-plane-wave (APW) method. The results for the TPMD for Pd and PdH are compared. These results are used to calculate the one-dimensional (1D) angular correlation of positron annihilation radiation (ACPAR), N(pz), along the symmetry directions <100>, <110>, and <111> as well as for the spherically averaged case. Differences in the 1D-ACPAR curves (NPdH-NPd) are obtained theoretically and compared with the available experimental data for PdH0.72 and Pd. Such a comparison shows good agreement and indicates that the band-structure calculation using the APW method is successful in predicting the changes in the TPMD in going from Pd to PdHx.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 16264 |
| Deposited On: | 15 Nov 2010 13:57 |
| Last Modified: | 03 Jun 2011 08:40 |
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