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- W2037293600 abstract "Luminescence components of BaF2 (180–230 nm), CsF (220–500 nm), CsCl (200–300 nm), CsBr (220–280 nm), and RbF (200–450 nm) have been investigated at room temperature by using synchrotron radiation as a light source. These luminescence components have excitation thresholds at the energy differences from the outermost Ba2+ 5p, or M+mp (m = 4 and 5 for M = Rb and Cs, respectively) core state to the conduction band, and are attributeted to the radiative decay of electrons in the X−np halogen valence bands (n = 2, 3, and 4 for X = F, Cl and Br, respectively) to the outermost-core hole states. Single bunch operation of synchrotron radiation has been used to determine the lifetime of the above luminescence. The measured lifetimes in ns are: BaF2: 0.88±0.02; CsF: 2.9±0.1; CsCl: 0.88±0.07; CsBr: 0.07±0.03; and RbF: 1.3±0.1 From the above results, it is proposed that insulators having large band-gap energy compared to the energy difference between the valence band and the outermost-core state are candidates for fast scintillation materials, for example, CsCl, CsBr, RbF, KF, BaCl2, BaBr2, and BaI2." @default.
- W2037293600 created "2016-06-24" @default.
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- W2037293600 date "1990-04-01" @default.
- W2037293600 modified "2023-09-30" @default.
- W2037293600 title "A new type of luminescence mechanism in large band-gap insulators: Proposal for fast scintillation materials" @default.
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- W2037293600 doi "https://doi.org/10.1016/0168-9002(90)90267-a" @default.
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