| Автор | J E Dickman |
| Автор | K G Lynn |
| Дата выпуска | 1978-12-01 |
| dc.description | The positron annihilation momentum spectrum was measured in annealed and plastically deformed Al samples as a function of temperature between 9 and 298K by a recently developed two-detector Doppler broadening technique. There is no indication of a low-temperature positron trap to 9K, implying that this effect may be strongly sample-dependent. The specific trapping rate of dislocations and the accompanying substructures shows no detectable temperature dependence at low momentum, whereas the high-momentum contributions exhibit a small temperature dependence in agreement with theoretical predictions. The change as a function of temperature of the high-momentum contributions for annealed Al is 3.4 times smaller than the change predicted by recent calculations. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The low-temperature dependence of positron annihilation momentum spectra in Al |
| Тип | lett |
| DOI | 10.1088/0305-4608/8/12/004 |
| Print ISSN | 0305-4608 |
| Журнал | Journal of Physics F: Metal Physics |
| Том | 8 |
| Первая страница | L295 |
| Последняя страница | L298 |
| Аффилиация | J E Dickman; Phys. Dept., Brookhaven Nat. Lab., Upton, NY, USA |
| Аффилиация | K G Lynn; Phys. Dept., Brookhaven Nat. Lab., Upton, NY, USA |
| Выпуск | 12 |
