PARAMAGNETIC CENTERS BY X-RAY-IRRADIATION OF ALUMINUM HYDROXIDE - EPR SPECTROSCOPY, RADIATION CHEMICAL-YIELD AND KINETICS OF THERMAL DECAY OF PARAMAGNETIC CENTERS

被引：10
|
作者：
KURUC, J
机构：
[1] Department of Nuclear Chemistry, Faculty of Sciences, Comeniu University, Bratislava
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-LETTERS | 1991年 / 154卷 / 01期
关键词：
D O I：
10.1007/BF02163064
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
EPR spectra of paramagnetic centers originating from X-ray-irradiation of aluminium hydroxide at room temperature have been measured. The EPR spectrum represents a superposition of EPR spectra of ionic centers O-, holes of type [GRAPHICS] Al and trapped electrons. Radiation chemical yield of paramagnetic centers observed at room temperature (293 K) is G(SIGMA spins) = (4.4 +/- 0.6) spins per 100 eV absorbed energy. The decay of paramagnetic centers in irradiated Al (OH)3 was observed at 293 K. The rate constant of the paramagnetic centers decay in irradiated Al (OH)3 is k2 = (0.0980 +/- 0.0019) kg.mol-1.min-1 and their half-life is 9.43 +/- 0.18 days.
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页码：61 / 72
页数：12
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