Electron paramagnetic resonance study of the paramagnetic centers in gamma-irradiated oxalic acid dihydrate single crystal

被引：5

作者：

Caliskan, Betul ^{[1
]}

Caliskan, Ali Cengiz ^{[2
]}

机构：

[1] Pamukkale Univ, Fac Arts & Sci, Dept Phys, TR-20070 Denizli, Turkey

[2] Gazi Univ, Fac Sci, Dept Chem, TR-06500 Ankara, Turkey

来源：

RADIATION PHYSICS AND CHEMISTRY | 2021年 / 188卷

关键词：

EPR; Spectroscopic splitting factor; Hyperfine coupling constant; Radiation damage centers; RADIATION-DAMAGE; EPR; DIFFRACTION; ESR;

D O I：

10.1016/j.radphyschem.2021.109592

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The Electron Paramagnetic Resonance (EPR) spectra of the radicals produced by gamma-irradiation of a single crystal of oxalic acid dihydrate (C2H6O6) have been reported. The EPR spectra of gamma-irradiated single crystals of oxalic acid dihydrate have been studied for different orientations of crystals in a magnetic field. As a result of studies carried out along three axes, it has been determined that there are two biradicals. The EPR spectra have been investigated at temperatures between 125 and 450 K. The spectra have been found to be temperature independent. The g values of the radiation damage centers observed in oxalic acid dihydrate acid single crystal and the hyperfine structure constants of the free electron with nearby protons have been obtained from the single crystal EPR analysis.

引用

页数：6

共 27 条

[1] A REFINEMENT OF THE CRYSTAL STRUCTURE ANALYSES OF OXALIC ACID DIHYDRATE [J].

AHMED, FR ;

CRUICKSHANK, DWJ .

ACTA CRYSTALLOGRAPHICA, 1953, 6 (05) :385-392

[2] Electron paramagnetic resonance study of irradiated tetramethyl-4-piperidion [J].

Aras, E ;

Asik, B ;

Çaliskan, B ;

Büyüm, M ;

Birey, M .

RADIATION EFFECTS AND DEFECTS IN SOLIDS, 2004, 159 (06) :353-358

[3] EPR study of the free radicals in the single crystals of 2-thiothymine γ-irradiated at 300 K [J].

Besic, Erim .

JOURNAL OF MOLECULAR STRUCTURE, 2009, 917 (2-3) :71-75

[4] Electron Paramagnetic Resonance Study of the Radiation Damage in Trans-Chalcone Single Crystal [J].

Caliskan, B. ;

Caliskan, A. Cengiz .

ACTA PHYSICA POLONICA A, 2019, 136 (01) :92-100

[5] Electron Paramagnetic Resonance Study of the Paramagnetic Center in Gamma-Irradiated Sulfanilic Acid Single Crystal [J].

Caliskan, B. ;

Caliskan, A. C. .

ACTA PHYSICA POLONICA A, 2019, 135 (03) :480-484

[6] EPR Study of Gamma Irradiated Cholestanone Single Crystal [J].

Caliskan, B. .

ACTA PHYSICA POLONICA A, 2014, 125 (01) :135-138

[7] Electron paramagnetic resonance characterization of gamma irradiation damage centers in S-butyrylthiocholine iodide single crystal [J].

Caliskan, Betul ;

Civi, Mehmet ;

Birey, Mehmet .

RADIATION EFFECTS AND DEFECTS IN SOLIDS, 2007, 162 (02) :87-93

[8] Electron paramagnetic resonance analysis of gamma irradiated 4-nitropyridine N-oxide single crystal [J].

Caliskan, Betul ;

Civi, Mehmet ;

Birey, Mehmet .

RADIATION EFFECTS AND DEFECTS IN SOLIDS, 2006, 161 (05) :313-317

[9] Electron paramagnetic resonance study of the radiation damage in phosphoryethanolamine single crystal [J].

Caliskan, Betul ;

Caliskan, Ali Cengiz .

JOURNAL OF MOLECULAR STRUCTURE, 2018, 1173 :781-791

[10] EPR study of radiation damage in gamma-irradiated 3-nitroacetophenone single crystal [J].

Caliskan, Betul ;

Caliskan, Ali Cengiz .

RADIATION EFFECTS AND DEFECTS IN SOLIDS, 2017, 172 (5-6) :398-410

← 1 2 3 →