Published July 1, 1983
| Version v1
Journal article
Radiation damage studies of Co2+ and Ni2+ doped NH4Cl crystals
Creators
- 1. Indian Inst. of Tech., Madras. Dept. of Physics
- 2. National Univ. of Singapore (Singapore). Dept. of Physics
Description
Results from the radiation damage studies of NH4Cl:Co2+ and NH4Cl:Ni2+ crystals are presented. On X-irradiation at room temperature the NH4Cl:Co2+ crystals are found to absorb at 270, 345, 585, 900, and 1000 nm. These absorption bands are attributed to the charge transfer transitions between radiation induced hydrazine-like defect, N2H4+, and ligands H2O or NH3 which are made available in the crystal along with the divalent impurity. If not all the absorption bands but similar absorption is found on irradiation in Ni2+ doped NH4Cl crystals also. ESR studies of X-rayed Ni2+ doped NH4Cl crystals reveal the formation of both, Ni+ and Ni3+. Spin-Hamiltonian parameters for these centers are given. (author)
Additional details
Publishing Information
- Journal Title
- Phys. Status Solidi B
- Journal Volume
- 118
- Journal Issue
- 1
- Series
- Phys. Status Solidi B.
- Journal Page Range
- 381-387
- ISSN
- 0370-1972
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- German Democratic Republic
- INIS RN
- 14805464
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- ABSORPTION SPECTRA; AMMONIUM CHLORIDES; CATIONS; CHEMICAL RADIATION EFFECTS; COBALT COMPOUNDS; DOPED MATERIALS; ELECTRON SPIN RESONANCE; HAMILTONIANS; HYDRAZINE; IMPURITIES; NICKEL COMPOUNDS; PHYSICAL RADIATION EFFECTS; VALENCE; X RADIATION
- Descriptors DEC
- AMMONIUM COMPOUNDS; CHARGED PARTICLES; CHLORIDES; CHLORINE COMPOUNDS; ELECTROMAGNETIC RADIATION; HALIDES; HALOGEN COMPOUNDS; IONIZING RADIATIONS; IONS; MAGNETIC RESONANCE; MATERIALS; MATHEMATICAL OPERATORS; QUANTUM OPERATORS; RADIATION EFFECTS; RADIATIONS; RESONANCE; SPECTRA; TRANSITION ELEMENT COMPOUNDS