| Автор | D T Britton |
| Дата выпуска | 1991-02-11 |
| dc.description | Annihilation spectra, resulting from the implantation of mono-energetic positrons in a perfect homogeneous solid, have been modelled allowing for the transport of both thermal and epithermal positrons. The resulting curves resemble a sum of two exponential components, although the intensities are not simply related to the positron back-diffusion probability. Because of the very short times involved, the effects of nonthermal positron transport are less significant than for steady-state diffusion models. At room temperature, internal reflection of thermal positrons at the surface has little effect on the solution to the diffusion equation for deeply implanted positrons. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Time-dependent diffusion and annihilation of positrons implanted in a semi-infinite medium |
| Тип | paper |
| DOI | 10.1088/0953-8984/3/6/006 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 3 |
| Первая страница | 681 |
| Последняя страница | 692 |
| Аффилиация | D T Britton; Inst. fur Nukleare Festkorperphys., Univ. der Bundeswehr Munchen, Neubiberg, West Germany |
| Выпуск | 6 |
