57Fe Mossbauer spectroscopy of radiation damaged samarskites and gadolinites

被引：2
|
作者：
Malczewski, Dariusz [1 ]
Grabias, Agnieszka [2 ]
Dercz, Grzegorz [3 ]
机构：
[1] Univ Silesia, Fac Earth Sci, PL-41200 Sosnowiec, Poland
[2] Inst Elect Mat Technol, PL-01919 Warsaw, Poland
[3] Univ Silesia, Inst Mat Sci, PL-40007 Katowice, Poland
来源：
HYPERFINE INTERACTIONS | 2010年 / 195卷 / 1-3期
关键词：
Samarskite; Gadolinite; Mossbauer spectroscopy; Metamict minerals;
D O I：
10.1007/s10751-009-0105-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
We report the results of Fe-57 Mossbauer spectroscopy, gamma-ray spectrometry and X-ray diffraction of two fully metamict samarskites and two partially metamict gadolinites. The absorbed alpha-dose for these minerals are found to range from 3.6 x 10(15)alpha-decay/mg for one of the gadolinite samples to 7.7 x 10(17)alpha-decay/mg for one of the samarskite samples. The Mossbauer spectra of samarskites and gadolinites show increasing line widths of the Fe2+ doublets with absorbed alpha-dose. We also observe that the increase in average quadrupole splitting of the Fe2+ components correlates better with absorbed alpha-dose from Th-232 than with total alpha-dose.
引用
收藏
页码：85 / 91
页数：7
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