Energy resolution and non-proportionality of the light yield of pure CsI at liquid nitrogen temperatures

Moszyński, M.; Balcerzyk, Marcin; Czarnacki, W.; Kapusta, M.; Klamra, W.; Schotanus, P.; Syntfeld, A.; Szawłowski, M.; Kozlov, V.

doi:10.1016/j.nima.2004.08.043

Cited by 62 publications

(48 citation statements)

References 13 publications

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“…A similar effect observed in the undoped CsI(Moszyń ski et al, 2005c) suggested that accidental doping by impurities improved seriously a non-proportionality and then the energy resolution.Moreover, several observations collected in the last 10 years on the unexpected influence of slow components of the light pulses on energy resolution suggest more complex processes in the scintillators. The studies of CsI(Tl), ZnSe(Te)…”

supporting

confidence: 56%

“…The non-proportionality of the undoped oxide crystals, as BGO (Moszyń ski et al, 2004) and CWO (Moszyń ski et al, 2005a), represents the fundamental properties of the scintillator materials. In case of doped crystals, one observes variation of the non-proportionality characteristic depending on doping agents, particularly for halide crystals (Moszyń ski et al, 2009(Moszyń ski et al, , 2005c. Moreover, the pure, undoped halide crystals, as NaI and CsI, are very sensitive to the impurities, which affect the non-proportionality curves (Moszyń ski et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…Numerous studies have characterized the non-proportional response and a contribution of scintillators to the energy resolution of new Ce-doped crystals (Moszyń ski, 2003;Dorenbos et al, 1995;Taulbee et al, 1997;Mengesha et al, 1998;Valentine et al, 1998;Balcerzyk et al, 2000;Kapusta et al, 1999), heavy oxide crystals (Moszyń ski et al, 2004(Moszyń ski et al, , 2005a and undoped NaI and CsI at liquid nitrogen temperature (Moszyń ski et al, 2003b(Moszyń ski et al, , 2005c.…”

Section: Introductionmentioning

confidence: 99%

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Energy resolution and non-proportionality of scintillation detectors – new observations

Moszyński

2010

Radiation Measurements

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supporting

confidence: 56%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energy resolution and non-proportionality of scintillation detectors – new observations

Moszyński

2010

Radiation Measurements

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“…Different samples of undoped NaI crystals showed various properties, which seem to be correlated with the purity of the crystals, reflected further in the non-proportionality curves [16]. This observation was also confirmed in the study of undoped CsI crystals [17]. In spite of the measured emission spectra at room temperature it was difficult to define the crystal not affected by the impurities.…”

Section: Introductionmentioning

confidence: 59%

“…In the other papers the properties of halide crystals were studied again [11][12][13]. Finally, the studies of undoped NaI and CsI crystals at liquid nitrogen (LN z ) temperature [14][15][16][17] suggested a possible improvement of scintillators by a selective co-doping.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Undoped NaI Scintillators with Different Purity

Moszyński

Czarnacki

Syntfeld-Każuch

et al. 2008

2008 IEEE Nuclear Science Symposium Conference Record

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The performance of undoped NaI crystal of a high purity of 7 N grade, developed by Saint-Gobain Crystals for a dark matter search, was studied at liquid nitrogen temperature using avalanche photodiode. The measured quantities covered the light output expressed in the electron-hole (e-h) pair number, non-proportionality characteristics, energy resolution and tinally the intrinsic resolution of the studied crystals. In contrast to the previous study, the new crystals showed comparable non-proportionality curves to that known for NaI(TI) at room temperature and a poor energy resolution of about 8% for 662 keV gamma rays from 137CS source. The performed study highlights a role of undoped NaI crystals in a better understanding of limitations of energy resolution in scintillation detectors. A high sensitivity to traces of doping may help to find the way of a modification of non-proportionality of other scintillators by a selective doping or co-doping. A further study of slow components of the NaI light pulses and their influence on energy resolution may clear up its possible deterioration by defects in the crystal structures.

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Effect of the activator impurity on the scintillation yield in alkali-halide crystals

Gektin

Gridin

Vasyukov

et al. 2014

Phys. Status Solidi B

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The influence of different activator impurities on the scintillation yield of alkali halides has been investigated as a function of temperature. Luminescence spectra of pure and activated CsI and NaI scintillation crystals were measured under X‐ray and VUV excitation at temperatures from 10 to 300 K. In indium‐ and thallium‐doped crystals activator centers can capture electrons. Along with self‐trapping of holes at low temperatures, electron capture by the dopant results in energy storage. This leads to a significant decrease of luminescence yield. In Eu‐doped NaI and CsI crystals activator centers capture a hole first. In this way, at low temperatures electrons recombine either with self‐trapped holes (yielding STE emission), or with holes trapped by the activator (giving rise to Eu emission band). No energy loss at low temperature is evident in CsI:Eu and NaI:Eu crystals.

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Energy resolution and non-proportionality of the light yield of pure CsI at liquid nitrogen temperatures

Cited by 62 publications

References 13 publications

Energy resolution and non-proportionality of scintillation detectors – new observations

Energy resolution and non-proportionality of scintillation detectors – new observations

A Comparative Study of Undoped NaI Scintillators with Different Purity

Effect of the activator impurity on the scintillation yield in alkali-halide crystals

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