Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Chubaci, J.F.D.
Right arrow Articles by Watanabe, S.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Chubaci, J.F.D.
Right arrow Articles by Watanabe, S.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Radiation Protection Dosimetry 33:139-142 (1990)
© 1990 Oxford University Press

Correlation Between Thermally Stimulated Exoelectron Emission (TSEE) Glow Curves and Optical Absorption (OA) Spectra for MgO Single Crystal

J.F.D. Chubaci, A.R. Blak and S. Watanabe

TSEE glow curves of MgO single crystals, heat treated at 1000 oC for 30 min and X irradiated, showed prominent peaks at 190 oC(peak I) and 430 oC(peak II). OA spectra of samples, heat treated under the same conditions and exposed to 60Co ? radiation, showed bands at 540, 285, 250 and 220 nm. Submitting the samples to successive heat treatments from room temperature (RT) up to 1000 oC, caused: (i) the 540 nm band to disappear after annealing at 100 oC for 30 min; (ii) a slow decay of the other bands with successive annealing up to 410 oC; (iii) with the 525 oC annealing the 220 nm almost to disappear; (iv) the 650 oC annealing to eliminate completely the 285 nm band while the 250 nm band became clearly resolved. The 220 and 285 nm bands have been associated with Fe3+ present in the crystal. While the band at 220 nm started to decrease after annealing at 410 oC, the TSEE peak II had its maximum at 430 oC, indicating that this TSEE peak is formed at the expense of the centres that give rise to the 220 nm band.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.