التفاصيل البيبلوغرافية
| العنوان: |
TIME RESOLVED PHOTOLUMINESCENCE FROM A PHOSPHATE GLASS (GD-300) IRRADIATED WITH HEAVY IONS AND GAMMA RAYS. |
| المؤلفون: |
Yasuda, Hiroshi, Ishidoya, Tatsuyo |
| المصدر: |
Health Physics; Mar2003, Vol. 84 Issue 3, p373, 3p, 3 Graphs |
| مصطلحات موضوعية: |
PHOTOLUMINESCENCE, ULTRAVIOLET radiation, GAMMA rays, RADIATION dosimetry |
| مستخلص: |
The time-resolved photoluminescence from a phosphate-glass photoluminescence dosimeter (GD-300) was compared for different quality radiations: relativistic heavy ions ([sup 12]C and [sup 40]Ar) and [sup 60]Co gamma rays. The intensities of photoluminescence afterglow at 2-7 µs after pulsed UV excitation, i.e., in the time range used for conventional dosimetry, soon reached stable conditions for all radiations. Whereas the early photoluminescence emission at the range less than 0.4 µs was notably unstable for gamma rays only; it continued decreasing even at 2 d after irradiation. In contrast, the photoluminescence afterglows for the heavy ions were stable over the whole range after excitation. These results indicate that the process of photoluminescence-center formation is different for heavy ions and gamma rays. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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