Two-dimensional thermoluminescence method for checking LiF crystals homogeneity

被引：6

作者：

Marczewska, B. ^{[1
]}

Bilski, P. ^{[1
]}

Gieszczyk, W. ^{[1
]}

Klosowski, M. ^{[1
]}

机构：

[1] Inst Nucl Phys PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland

来源：

JOURNAL OF CRYSTAL GROWTH | 2017年 / 457卷

关键词：

LiF crystals; Thermoluminescence; 2-Dimentional imaging; Impurity distribution; DETECTORS; DOSIMETRY;

D O I：

10.1016/j.jcrysgro.2016.08.005

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Thermoluminescence (TL), being one of the common luminescence methods, is very sensitive to the presence of any impurities in the material structure and can be used for the detection of impurity distribution in the bulk of the crystal. If in a TL reader a CCD camera is used, a measurement of TL signal would give us an unique two-dimensional (2-D) imaging of TL signal distribution, and thereby the distribution of dopants. The possibility of the application of 2-D TL method for the control of uniformity of the crystal related to dopant distribution in the volume of the bulk crystal was tested on the large area samples of LiF doped and un-doped crystals grown by Czochralski method at the IFJ PAN in Krakow. The special TL reader with a CCD camera was used for analyzing of luminescence emitting during the heating of the irradiated in uniform radiation field slices of crystals cut longitudinal and perpendicular to the growth axis and for analyzing of the shape of TL glow curves for selected crystal areas. Non-uniform distribution of the dopants was demonstrated for doped crystal grown with relatively slow growth rate. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：320 / 324

页数：5

共 13 条

[1] Colored LiF: an optical material for all seasons [J].

Baldacchini, G .

JOURNAL OF LUMINESCENCE, 2002, 100 (1-4) :333-343

[2]

Bilski P., 1992, RADIAT PROT DOSIM, V100, P199

[3] 2-D dosimetry of a proton radiotherapy beam using large-area LiF: Mg,Cu,P TL detectors [J].

Czopyk, L. ;

Cirrone, G. A. P. ;

Cuttone, G. ;

Klosowski, M. ;

Olko, P. ;

Sroka, U. ;

Waligorski, M. P. R. .

RADIATION MEASUREMENTS, 2008, 43 (2-6) :977-980

[4]

Kabat D., RAD MEAS

[5] Polymer-LiF: Mg,Cu,P foil as thermoluminescent detector of low-energy X-rays [J].

Krasa, J. ;

Czopyk, L. ;

Klosowski, M. ;

Marczewska, B. ;

Olko, P. ;

Juha, L. .

RADIATION MEASUREMENTS, 2007, 42 (10) :1600-1604

[6] Two-dimensional thermoluminescence dosimetry using planar detectors and a TL reader with CCD camera readout [J].

Marczewska, B. ;

Bilski, P. ;

Czopyk, L. ;

Olko, P. ;

Waligorski, M. P. R. ;

Zapotoczny, S. .

RADIATION PROTECTION DOSIMETRY, 2006, 120 (1-4) :129-132

[7] Measurement of 2-D dose distributions by large-area thermolumine scent detectors [J].

Marczewska, B ;

Bilski, P ;

Olko, P ;

Waligórski, MPR .

RADIATION MEASUREMENTS, 2004, 38 (4-6) :833-837

[8] CVD diamond wafers as large-area thermoluminescence detectors for measuring the spatial distribution of dose [J].

Marczewska, B ;

Bilski, P ;

Olko, P ;

Nesládek, M ;

Bergonzo, P ;

Rebisz, M ;

Waligórski, MPR .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 2003, 199 (01) :119-124

[9] Clinical tests of large area thermoluminescent detectors under radiotherapy beams [J].

Marrazzo, L. ;

Pallotta, S. ;

Klosowski, M. ;

Czopyk, L. ;

Bucciolini, M. ;

Olko, P. ;

Waligorski, M. P. R. .

RADIATION MEASUREMENTS, 2013, 51-52 :25-30

[10]

McKeever S.W.S., 1995, Thermoluminescence Dosimetry Materials: Properties and Uses

← 1 2 →