| Автор | Z G Wang |
| Автор | C Dufour |
| Автор | E Paumier |
| Автор | M Toulemonde |
| Дата выпуска | 1994-08-22 |
| dc.description | In the framework of the thermal-spike model the present paper deals with the effect of the electronic stopping power (S<sub>e</sub>) in metals irradiated by swift heavy ions. Using the strength of the electron-phonon coupling g(z) with the number of valence electrons z as the unique free parameter, the increment of lattice temperature induced by swift-heavy-ion irradiation is calculated. Choosing z=2, the calculated threshold of defect creation by S<sub>e</sub> for Ti, Zr, Co and Fe is about 11, 27.5, 28 and 41 keV nm<sup>-1</sup>, in good agreement with experiment. Taking the same z value, the calculation shows that Al, Cu, Nb and Ag are S<sub>e</sub> insensitive. Moreover, in Fe, the differences in the damage created by U ions of different energies but exhibiting the same value of S<sub>e</sub> may be interpreted by a velocity effect. Using z=2, other calculations suggest that Be (S<sub>e</sub>>or=11 keV nm<sup>-1</sup>), Ga (S<sub>e</sub>>or=5 keV nm<sup>-1</sup>) and Ni (S<sub>e</sub>>or=49 keV nm<sup>-1</sup>) should be sensitive to S<sub>e</sub> but Mg should not. These examples put the stress on the effect of the physical parameters governing the electron-phonon coupling constant apart from z determination: the sound velocity linked to the Debye temperature and the lattice thermal conductivity. Furthermore, a simple criterion is proposed in order to predict the S<sub>e</sub> sensitivity of metals. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The S<sub>e</sub> sensitivity of metals under swift-heavy-ion irradiation: a transient thermal process |
| Тип | paper |
| DOI | 10.1088/0953-8984/6/34/006 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 6 |
| Первая страница | 6733 |
| Последняя страница | 6750 |
| Аффилиация | Z G Wang; CNRS, Caen, France |
| Аффилиация | C Dufour; CNRS, Caen, France |
| Аффилиация | E Paumier; CNRS, Caen, France |
| Аффилиация | M Toulemonde; CNRS, Caen, France |
| Выпуск | 34 |
