ROTATING CO2- CENTERS IN CORAL AND RELATED MATERIALS

被引：27

作者：

MIKI, T

KAI, A

机构：

[1] College of Technology, Yamaguchi University, Ube, Yamaguchi

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1990年 / 29卷 / 10期

关键词：

Aragonite; C02; Calcium carbonate; Calcium phosphate; Coral; Defect; Electron spin; Radiation; Radical; Resonance; Rotation;

D O I：

10.1143/JJAP.29.2191

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Radiation-induced radicals in coral, single-crystal aragonite, synthetic calcite and calcium phosphates are studied by ESR at low temperatures. The isotropic ESR signal at g=2.0007, which is used for ESR dating of CaCO3, disappears below 200 K, and a spectrum with an anisotropic line shape is detected. The linewidth of the isotropic signal increases between 220 and 200 K with decreasing temperature. The g=2.0007 signal is attributable to rotating CO2‒ions. © 1990 IOP Publishing Ltd.

引用

页码：2191 / 2192

页数：2

共 19 条

[1]

[Anonymous], ESR ALTERSBESTIMMUNG

[2]

BARABAS M, 1989, APPL RADIAT ISOTOPES, V40, P1105

[3] ELECTRON-SPIN-RESONANCE DATING - A STUDY OF HUMIC ACIDS INCORPORATED IN SYNTHETIC CALCITE [J].