THERMOLUMINESCENCE EMISSION-SPECTRA AND OPTICAL BLEACHING OF OLIGOCLASE

被引:13
作者
BOS, AJJ [1 ]
PITERS, TM [1 ]
YPMA, PJ [1 ]
机构
[1] DELFT UNIV TECHNOL,FAC MIN & PETR ENGN,2628 RX DELFT,NETHERLANDS
关键词
D O I
10.1016/1350-4487(94)90063-9
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
Thermoluminescence (TL) spectra of oligoclase samples have been recorded in the temperature range from 300 to 700 K and the wavelength range from 300 to 850 nm. Like other feldspars, oligoclase produces blue (peaking at 460 nm) and red (peaking at 765 nm) emission bands. The maximum of the red emission occurs 20 K lower than that of the blue band. Optical bleaching was performed at wavelengths varying from 360 to 800 nm. Bleaching of artificially irradiated oligoclase causes a decrease of the TL signal. The bleaching efficiency increases with decreasing wavelength. Bleaching does not only influence the height of the glow curve but also the shape. An interesting observation is that the ratio of the blue and red band intensities is not affected by a bleaching procedure. No evidence has been found that bleaching influences the shape of the emission spectra. The correlation between the blue and red bands is discussed.
引用
收藏
页码:349 / 353
页数:5
相关论文
共 8 条
[1]   THERMO-LUMINESCENCE IN SOME FELDSPARS - EARLY RESULTS FROM STUDIES OF SPECTRA [J].
AKBER, RA ;
PRESCOTT, JR .
NUCLEAR TRACKS AND RADIATION MEASUREMENTS, 1985, 10 (4-6) :575-580
[2]  
ANDERSSON M, 1991, NUCL TRACKS RAD MEAS, V18, P41
[3]  
DALAL ML, 1988, NUCL TRACKS RAD MEAS, V14, P57
[4]  
HUNTLEY DJ, 1991, NUCL TRACKS RAD MEAS, V18, P127
[5]   OPTICAL DATING - K-FELDSPARS OPTICAL-RESPONSE STIMULATION SPECTRA [J].
HUTT, G ;
JAEK, I ;
TCHONKA, J .
QUATERNARY SCIENCE REVIEWS, 1988, 7 (3-4) :381-385
[6]  
KIRSH Y, 1988, NUCL TRACKS RAD MEAS, V14, P43
[7]   AN AUTOMATED RESEARCH FACILITY FOR MEASURING THERMOLUMINESCENCE EMISSION-SPECTRA USING AN OPTICAL MULTICHANNEL ANALYZER [J].
PITERS, TM ;
MEULEMANS, WH ;
BOS, AJJ .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1993, 64 (01) :109-117
[8]   THE EFFECT OF ILLUMINATION WAVELENGTH ON THE BLEACHING OF THE THERMO-LUMINESCENCE (TL) OF QUARTZ [J].
SPOONER, NA ;
PRESCOTT, JR ;
HUTTON, JT .
QUATERNARY SCIENCE REVIEWS, 1988, 7 (3-4) :325-329