2015
DOI: 10.1021/acs.jpcc.5b05627
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Abstract: A model of energy relaxation in alkali halide scintillators doped with Tl-like activators is presented. Interaction between thermalized charge carriers, their diffusion, and capture by traps are considered. The model of energy relaxation suggested in the work includes essential electron excited states in alkali halides doped with Tl-like activators. Self-trapping of holes occurs in alkali halides at LNT, giving rise to creation of self-trapped excitons (STEs). Thallium-like activator impurity can act both as a… Show more

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Cited by 34 publications
(40 citation statements)
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“…This component is consistent with previous measurements of undoped CsI scintillation at low temperature [5,44] Below 10 K, the structure becomes more complicated, with several components contributing equal amounts of light to the pulse. We see a short component of the order 100 ns from both αs and γs, consistent with the 290 nm emission, and a long component that is consistent with the 338 nm emission, which are described by previous studies as a system of three excitonic absorption bands [20,38]. There are several very long time constants present at high temperatures that seem to hold a constant value of 10 µs and 100 µs, which could be attributed to coincidence within our acquisition window of α and γ events.…”
Section: Time Structuresupporting
confidence: 87%
See 1 more Smart Citation
“…This component is consistent with previous measurements of undoped CsI scintillation at low temperature [5,44] Below 10 K, the structure becomes more complicated, with several components contributing equal amounts of light to the pulse. We see a short component of the order 100 ns from both αs and γs, consistent with the 290 nm emission, and a long component that is consistent with the 338 nm emission, which are described by previous studies as a system of three excitonic absorption bands [20,38]. There are several very long time constants present at high temperatures that seem to hold a constant value of 10 µs and 100 µs, which could be attributed to coincidence within our acquisition window of α and γ events.…”
Section: Time Structuresupporting
confidence: 87%
“…There is some evidence that the non-proportionality of the LY in pure CsI depends on temperature. Lu et al [45] report that at 295 K, the LY of a 60 keV γ-interaction is greater than that of a [38] are shown by the solid green line, scaled to be equal to our result at 77 K. c) α/γ ratio (corrected) as a function of temperature, showing a factor 4 variation and reaching values greater than 1. In a) and b), conversion of detected photons to emitted ones requires a multiplication by roughly 70, though this does not affect ratio in c).…”
Section: Time Structuresupporting
confidence: 61%
“…We omit the bulky result of the above integration for arbitrary n ∈ Integers, γ ∈ Reals, which can be computed with account for (9). In the particular case of given n and γ, for the example for n = −γ = 1, we obtain…”
Section: Operational Solution Of the Hyperbolic Heat Conduction Equationmentioning
confidence: 99%
“…A good description of the major numerical methods is given, for example, in [1][2][3][4][5][6]. Here they allow numerical modelling of complicated physical processes [7][8][9][10][11][12][13][14][15][16][17][18][19], including multidimensional heat transfer in rectangles and cylinders [20][21][22][23]. However, proper understanding of the solutions and of the obtained results can be best done when they are obtained in analytical form.…”
Section: Introductionmentioning
confidence: 99%
“…From a physical point of view such an equation expresses the conservation of charge density (normalized with respect to the electron charge e ≈ 1.6 · 10 −19 C) within R provided the following identification for the micromechanical quantities is done: 2 For instance the models developed into [14], [16], [39], have M = 2 (electron-hole and exciton carriers densities), those in [15] and [7] split between the electron and holes with M = 3, the model developed into [40] has M = 7 whereas those in [13] and [36] have unspecified M (M ≥ 11 in [13]). it is important to remark that (b , s) represents a system of external actions for R in the sense that we may assume that in an experiment they can be controlled and be disposed of.…”
Section: State Variable Balance Laws and Order Parametermentioning
confidence: 99%