Abstract
Thermoluminescence measurements on potassium azide (KN3), using both x-ray or gamma-ray irradiations, indicate that there are many shallow charge trapping levels. In the temperature range from 10-525 °K a typical sample will have twelve glow peaks and trap depths range from 0·045-0·6 ev. In contrast, ultraviolet light irradiation produces only the three glow peaks at 46, 70 and 80 °K. The glow peaks at 109, 123, 142 and 175 °K continue to occur after the sample has been repeatedly irradiated and heated. However, the peaks at 211, 225 and 245 °K disappear irreversibly after a few irradiation and heating cycles. In addition to the results on `pure' crystals described above, measurements were made on samples containing various amounts of Ca2+, Ba2+, Sr2+ and SO42- ion impurity. The data from these doped samples suggest that the 123 °K peak is associated with a hole-trapping centre which could be the azide analogue of the Vk centre observed in alkali halides. The thermoluminescence results, coupled with other information, give some information about other defects.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
