An electron nuclear double resonance and electron spin resonance study of isotropic CO2- and SO2- radicals in natural carbonates

被引：12

作者：

Idrissi, S ^{[1
]}

Callens, F ^{[1
]}

Moens, P ^{[1
]}

Debuyst, R ^{[1
]}

Dejehet, F ^{[1
]}

机构：

[1] STATE UNIV GHENT,LAB KRISTALLOG STUDIE VAN DE VASTE STOF,B-9000 GHENT,BELGIUM

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1996年 / 35卷 / 10期

关键词：

isotropic CO2-; isotropic SO2-; carbonate; electron nuclear double resonance; electron spin resonance;

D O I：

10.1143/JJAP.35.5331

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Natural samples often exhibit isotropic electron spin resonance (ESR) signals at g=2.0006, (CO2-) and g=2.0057 (SO2-). Electron nuclear double resonance (ENDOR) data were collected for various calcitic or aragonitic samples of marine origin. The small and isotropic H-1 hyperfine ENDOR splitting (250-350 kHz) is explained by a locally disordered water environment for these species. As for the isotropic CO2- and CO3- radicals in synthetic monohydrocalcite and apatite, the radicals are most probably located in the occluded water embedded in these samples, and not in the crystal matrix.

引用

页码：5331 / 5332

页数：2

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