Thermoluminescence of photostimulable materials after X irradiation below room temperature.
Thermoluminescence glow peaks in the temperature range 100 to 400 K are investigated for BaFX (X = Cl, Br) crystals after X irradiation at 100 K. A prominent glow peak of BaFCl around 210 K is found to be composed of a few recombination roots, that is, the peak corresponds to the recombination of hole trapped centres such as an O- centre and a dissociated Cl2- centre with the F (F-) centre and the O2--F(Cl-) pair defect. Another small glow peak around 270 K is likely to occur from thermal dissociation of the O2- -F(Cl-) pair defect. The main glow peak of BaFBr:O2- at 170 K may be attributed to a recombination of an O- centre with the F(Br-) centre.
Nakamura
S
S
Faculty of Engineering, Kanazawa University, Japan. nakamura@t.kanazawa-u.ac.jp
Iwasa
H
H
Kurobori
T
T
Inabe
K
K
D017609:Barium Compounds / Q000737:chemistry / Q000528:radiation effects; D001965:Bromides / Q000737:chemistry / Q000528:radiation effects; D002712:Chlorides / Q000737:chemistry / Q000528:radiation effects; D005459:Fluorides / Q000737:chemistry / Q000528:radiation effects; D008163:Luminescent Measurements; D010777:Photochemistry; D011854:Radiochemistry; D013053:Spectrophotometry; D013696:Temperature; D013819:Thermoluminescent Dosimetry / Q000379:methods*; D014965:X-Rays
D017609:Barium Compounds; D001965:Bromides; D002712:Chlorides; C024986:barium chloride; C055150:barium fluoride; D005459:Fluorides