Trap spectroscopy by the glow rate technique using bleaching of colour centres.
An application of the glow rate technique (GRT) for analysis of the parameters of thermostimulated decay of colour centres is presented using the data on the decay of radiation defects in LiBaF3:Fe crystals created by X rays at 300 K. The GRT offers a procedure for evaluation of the mean activation energy as a function of temperature in the case of arbitrary thermostimulated relaxation kinetics represented by the trap distribution function. The experimental procedure involves at least two subsequent measurements of thermostimulated decay kinetics at different heating rates. It is shown that the decay of the F type centres is governed by interaction of mobile anion vacancies with F(A) and F centres, leading to both the hopping migration and recombination of F centres and the thermoactivated dissociation of the F(A) centres.
Kulis
P
P
Institute of Solid State Physics, University of Latvia, Riga. p.kulis@cfi.lu.lv
Tale
I
I
Rudlof
G
G
D017609:Barium Compounds / Q000737:chemistry / Q000528:radiation effects; D003116:Color; D005063:Europium; D005459:Fluorides / Q000737:chemistry / Q000528:radiation effects; D007501:Iron / Q000737:chemistry; D018020:Lithium Compounds / Q000737:chemistry / Q000528:radiation effects; D011854:Radiochemistry; D013057:Spectrum Analysis / Q000379:methods / Q000706:statistics & numerical data; D013696:Temperature; D013819:Thermoluminescent Dosimetry / Q000379:methods* / Q000706:statistics & numerical data
D017609:Barium Compounds; D018020:Lithium Compounds; C027651:lithium fluoride; D005063:Europium; C034762:barium fluorochloride europium; D007501:Iron; C055150:barium fluoride; D005459:Fluorides