Accumulation features and TL of TLD-500 detectors in a wide temperature range at pulsed and continuous high-dose irradiation / Surdo A. I.,Abashev R. M.,Milman I. I.,Moiseykin E. V. // RADIATION MEASUREMENTS. - 2016. - V. 90, l. SI. - P. 192-195.

ISSN/EISSN:

1350-4487 / нет данных

Type:

Article; Proceedings Paper

Abstract:

The results of a comparative research of thermoluminescence (TL) of TLD-500 detectors based on anion defective corundum irradiated with continuous and pulsed X-ray and pulsed electron beams in a range of doses of 0.3 divided by 10(7) Gy, dose rates of 0.02-2.6.10(11) Gy/s, and in a temperature range of 300-950 K are presented. It is found that, in contrast to continuous irradiation, upon pulsed irradiation with a duration of 10 ns and dose rate of Pp >= 5.10(6) Gy/s, the first linear region of dose dependences for TL peaks at 450, 580 and 830 K is, instead of saturation, followed by a second one with a smaller slope at doses near 2, 200 and 10(3) Gy. Moreover, the slope of the second region increases with growing Pp. It was also found that dose dependence for the peak at 830 K in the area of the first linear region at 10-10(3) Gy remains invariable at Pp <= 10(10) Gy/s. It is shown that the upper limit of doses registered by TLD-500 detectors can be increased to 2.10(3) and 6.10(6) Gy for continuous and pulsed irradiation, respectively. New broadband UV luminescence with a maximum hv = 4.1 eV and half width H = 0.85 eV was registered within the TL peak spectrum at 830 K. Besides, the optical depletion spectrum in which a single band with hv = 5.2 eV and H = 1.6 eV is observed was investigated for a trap causing a peak at 830 K. (C) 2015 Elsevier Ltd. All rights reserved.

Author keywords:

Anion-defective corundum; Thermoluminescence; Pulsed irradiation; Continuous irradiation; High-dose high-temperature measurements LUMINESCENCE; ALPHA-AL2O3; THERMOLUMINESCENCE; CRYSTALS

DOI:

10.1016/j.radmeas.2015.12.027

Web of Science ID:

ISI:000378470500043

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL
Note	9th International Conference on Luminescent Detectors and Transformers of Ionizing Radiation (LUMDETR), Tartu, ESTONIA, SEP 20-25, 2015
Organization	Univ Tartu, Inst Phys
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
Keywords-Plus	LUMINESCENCE; ALPHA-AL2O3; THERMOLUMINESCENCE; CRYSTALS
Research-Areas	Nuclear Science \& Technology
Web-of-Science-Categories	Nuclear Science \& Technology
Author-Email	abashevrm@mail.ru
Number-of-Cited-References	11
Usage-Count-Since-2013	3
Journal-ISO	Radiat. Meas.
Doc-Delivery-Number	DP4MR