Electron Paramagnetic Resonance Study of the Radiation Damage Centers in Menadione Single Crystal

被引：5

作者：

Caliskan, Ali Cengiz ^{[1
]}

Caliskan, Betul ^{[1
]}

机构：

[1] Pamukkale Univ, Fen Edebiyat Fak, Fizik Bolumu, Denizli, Turkey

来源：

JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI | 2022年 / 25卷 / 01期

关键词：

EPR; menadione; vitamin K-3 (C11H8O2); spectroscopic splitting factor; hyperfine coupling constant; radiation damage center; SPIN-RESONANCE; EPR;

D O I：

10.2339/politeknik.666923

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The radiation damage centers in the Co-60-gamma rays irradiated menadione (2-methyl-1,4-naphthoquinone; Vitamin K-3; C11H8O2) single crystals were examined at 120 K by Electron Paramagnetic Resonance (EPR) spectroscopy. The presence of two radicals was detected in the compound. Both radicals are carbon centered radicals. Analysis of the EPR spectra of gamma-irradiated menadione single crystals along three different axes showed that the C(11)-H(19) bond of the compound was broken. It was determined that the unpaired electron located on the C(11) atom. The g values and the hyperfine structure constants of the radiation damage centers observed in menadione single crystal were obtained. Accuracy of experimental data was observed by simulation study.

引用

页码：299 / 312

页数：14

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