Abstract
The nature of the impurity emission center and the energy transfer mechanisms from intrinsic electronic excitations to the Mn2+ impurity centers in the CaSO4 − Mn crystal have been investigated. The methods of vacuum ultraviolet, atomic absorption and luminescence spectroscopy are used in a wide temperature range from 5 K to 300 K. The energy transfer of intrinsic electronic excitations to impurity emission centers in CaSO4 − Mn has been detected.
Highlights
Energy transfer of intrinsic electronic excitation to impurities in theThe nature of the impurity emission center and the energy transfer mechanisms from intrinsic electronic excitations to the Mn2+ impurity centers in the CaSO4 − Mn crystal have been investigated
In commercial dosimeters CaSO4 − Dy, Mn irradiated with X-rays, γ -rays, electron beams and other high-energy particles, impurity Mn2+ ions play the role of a transformer of the energy of intrinsic electronic excitations to the emitter
Pure CaSO4 crystals exhibit intrinsic emissions associated with the recombination of electrons with nonequivalently localized holes of the type SO4− - at 3.8 eV, 4.1-4.3 eV and about 5.0 eV [1]
Summary
The nature of the impurity emission center and the energy transfer mechanisms from intrinsic electronic excitations to the Mn2+ impurity centers in the CaSO4 − Mn crystal have been investigated. The methods of vacuum ultraviolet, atomic absorption and luminescence spectroscopy are used in a wide temperature range from 5 K to 300 K. The energy transfer of intrinsic electronic excitations to impurity emission centers in CaSO4 − Mn has been detected.
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