| Автор | V M Orera |
| Автор | M L Sanjuan |
| Автор | P J Alonso |
| Дата выпуска | 1986-08-30 |
| dc.description | Thermoluminescence and EPR measurements in RT X-irradiated CaO are reported. Two glow peaks at 360 and 400K are associated with the thermal destruction of two new donor-type paramagnetic defects of extrinsic character. The EPR spectrum of the defect that produces the first glow peak consists of an intense central line and six weak transitions which correspond to the hyperfine interaction with a <sup>25</sup>Mg nucleus. The spin-Hamiltonian parameters for this defect are g=2.0055+or-0.0002 and A<sup>Mg</sup>=4.2+or-0.1 MHz. The second defect shows the interaction with an <sup>27</sup>Al nucleus. The defect has trigonal symmetry and its spin-Hamiltonian parameters are g/sub ///=2.0075+or-0.0002, g<sub>perpendicular to </sub>=2.0042+or-0.0002, A/sub ///<sup>A1</sup>=-11.7+or-0.2 MHz, A<sub>perpendicular to </sub><sup>A1</sup>=-15.2+or-0.2 MHz and Q=0.18+or-0.05 MHz. The signs of the spin-Hamiltonian parameters are determined using the well resolved spectrum of the 'forbidden' lines. The activation energy for the thermal destruction of this centre is 1.1+or-0.1 eV. Some possible models for these defects are also discussed. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | EPR and thermoluminescence studies in RT X-irradiated CaO single crystals |
| Тип | paper |
| DOI | 10.1088/0022-3719/19/24/019 |
| Print ISSN | 0022-3719 |
| Журнал | Journal of Physics C: Solid State Physics |
| Том | 19 |
| Первая страница | 4763 |
| Последняя страница | 4769 |
| Аффилиация | V M Orera; Fac. de Ciencias, Zaragoza Univ., Spain |
| Аффилиация | M L Sanjuan; Fac. de Ciencias, Zaragoza Univ., Spain |
| Аффилиация | P J Alonso; Fac. de Ciencias, Zaragoza Univ., Spain |
| Выпуск | 24 |
