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
收藏
页码：2191 / 2192
页数：2
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