Effects of high gamma ray doses in quartz

G. O. Sawakuchi; E. Okuno

doi:10.1016/j.nimb.2003.12.021

Effects of high gamma ray doses in quartz

G. O. Sawakuchi, E. Okuno

Research output: Contribution to journal › Conference article › peer-review

18 Scopus citations

Abstract

This work intends to characterize the thermoluminescence (TL) of colorless Brazilian natural quartz that turns brown by irradiation with γ rays of ⁶⁰Co with high doses. We studied the TL response in the range of dose from 1 to 1000 kGy. In this range of dose, there are only few studies on the behavior of the TL and also on the mechanism of creation or destruction of defects. TL peaks of samples irradiated in laboratory are observed at around 135, 185, 250 and 325 °C with emission centered at 470 nm. These peaks present supralinear behavior from 1 to 20 kGy followed by saturation. The only exception is the peak at 185 °C, whose intensity after 30 kGy decays rapidly, then slowly until 500 kGy and becomes constant. Samples irradiated in laboratory and submitted to thermal treatment followed by irradiation with low dose present a peak at around 70 °C with emission centered at 380 nm.

Original language	English (US)
Pages (from-to)	217-221
Number of pages	5
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	218
Issue number	1-4
DOIs	https://doi.org/10.1016/j.nimb.2003.12.021
State	Published - Jun 2004
Externally published	Yes
Event	Proceedings of the Twelfth International Conference on Radiation - Gramado, Brazil Duration: Aug 31 2003 → Sep 5 2003

Keywords

Color center
Defects
Quartz
Smoky
Thermoluminescence

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nimb.2003.12.021

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title = "Effects of high gamma ray doses in quartz",

abstract = "This work intends to characterize the thermoluminescence (TL) of colorless Brazilian natural quartz that turns brown by irradiation with γ rays of 60Co with high doses. We studied the TL response in the range of dose from 1 to 1000 kGy. In this range of dose, there are only few studies on the behavior of the TL and also on the mechanism of creation or destruction of defects. TL peaks of samples irradiated in laboratory are observed at around 135, 185, 250 and 325 °C with emission centered at 470 nm. These peaks present supralinear behavior from 1 to 20 kGy followed by saturation. The only exception is the peak at 185 °C, whose intensity after 30 kGy decays rapidly, then slowly until 500 kGy and becomes constant. Samples irradiated in laboratory and submitted to thermal treatment followed by irradiation with low dose present a peak at around 70 °C with emission centered at 380 nm.",

keywords = "Color center, Defects, Quartz, Smoky, Thermoluminescence",

author = "Sawakuchi, {G. O.} and E. Okuno",

note = "Funding Information: G.O. Sawakuchi thanks FAPESP for the financial support (process 01/11030-0) and also S.W.S. McKeever and E.G. Yukihara for his stay at the Optically and Thermally Stimulated Phenomena Laboratory – OSU. ; Proceedings of the Twelfth International Conference on Radiation ; Conference date: 31-08-2003 Through 05-09-2003",

year = "2004",

month = jun,

doi = "10.1016/j.nimb.2003.12.021",

language = "English (US)",

volume = "218",

pages = "217--221",

journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",

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TY - JOUR

T1 - Effects of high gamma ray doses in quartz

AU - Sawakuchi, G. O.

AU - Okuno, E.

N1 - Funding Information: G.O. Sawakuchi thanks FAPESP for the financial support (process 01/11030-0) and also S.W.S. McKeever and E.G. Yukihara for his stay at the Optically and Thermally Stimulated Phenomena Laboratory – OSU.

PY - 2004/6

Y1 - 2004/6

N2 - This work intends to characterize the thermoluminescence (TL) of colorless Brazilian natural quartz that turns brown by irradiation with γ rays of 60Co with high doses. We studied the TL response in the range of dose from 1 to 1000 kGy. In this range of dose, there are only few studies on the behavior of the TL and also on the mechanism of creation or destruction of defects. TL peaks of samples irradiated in laboratory are observed at around 135, 185, 250 and 325 °C with emission centered at 470 nm. These peaks present supralinear behavior from 1 to 20 kGy followed by saturation. The only exception is the peak at 185 °C, whose intensity after 30 kGy decays rapidly, then slowly until 500 kGy and becomes constant. Samples irradiated in laboratory and submitted to thermal treatment followed by irradiation with low dose present a peak at around 70 °C with emission centered at 380 nm.

AB - This work intends to characterize the thermoluminescence (TL) of colorless Brazilian natural quartz that turns brown by irradiation with γ rays of 60Co with high doses. We studied the TL response in the range of dose from 1 to 1000 kGy. In this range of dose, there are only few studies on the behavior of the TL and also on the mechanism of creation or destruction of defects. TL peaks of samples irradiated in laboratory are observed at around 135, 185, 250 and 325 °C with emission centered at 470 nm. These peaks present supralinear behavior from 1 to 20 kGy followed by saturation. The only exception is the peak at 185 °C, whose intensity after 30 kGy decays rapidly, then slowly until 500 kGy and becomes constant. Samples irradiated in laboratory and submitted to thermal treatment followed by irradiation with low dose present a peak at around 70 °C with emission centered at 380 nm.

KW - Color center

KW - Defects

KW - Quartz

KW - Smoky

KW - Thermoluminescence

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U2 - 10.1016/j.nimb.2003.12.021

DO - 10.1016/j.nimb.2003.12.021

M3 - Conference article

AN - SCOPUS:2342574918

SN - 0168-583X

VL - 218

SP - 217

EP - 221

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

IS - 1-4

T2 - Proceedings of the Twelfth International Conference on Radiation

Y2 - 31 August 2003 through 5 September 2003

ER -

Effects of high gamma ray doses in quartz

Abstract

Keywords

ASJC Scopus subject areas

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