Energy Resolution of LGSO Scintillators

Moszynski,; Nassalski,; Czarnacki,; Syntfeld-Kazuch,; Wolski,; Batsch,; Usui,; Shimizu,; Shimura,; Kurashige,; Kurata,; Ishibashi, Koji

doi:10.1109/nssmic.2006.354182

Cited by 6 publications

(4 citation statements)

References 29 publications

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“…One STE gives one excited Tl that relaxes to emit one photon. These hypotheses are also consistent with the time response presented in Fig.6 and in [34] [35]. We mentioned a complex decay curve of NaI:Tl with the presence of an important rise time in the prompt scintillation light and two decay components.…”

Section: B Relation Between Model Parameters and Scintillation Mechasupporting

confidence: 91%

“…The rise time shown in the decay is attributed to the delay needed for the STE's to transfer to Tl ions. These hypothesis can also explain the temperature dependence of the NaI:Tl decay curve under gamma excitation published in [34] [35]. The delayed energy transfers are highly temperature dependent.…”

Section: B Relation Between Model Parameters and Scintillation Mechamentioning

confidence: 67%

“…The recorded scintillation light output is of 38,000 ph per MeV at room temperature [33]. Moszynski et al have studied the temperature dependence of NaI:Tl decay curve under gamma excitation [34] [35]. They show a strong temperature dependence of the NaI:Tl response.…”

Section: B Relation Between Model Parameters and Scintillation Mechamentioning

confidence: 99%

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Progress in Studying Scintillator Proportionality: Phenomenological Model

Bizarri

Cherepy

Choong

et al. 2009

IEEE Trans. Nucl. Sci.

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Abstract-We present a model to describe the origin of nonproportional dependence of scintillator light yield on the energy of an ionizing particle. The non-proportionality is discussed in terms of energy relaxation channels and their linear and non linear dependences on the deposited energy. In this approach, the scintillation response is described as a function of the deposited energy deposition and the kinetic rates of each relaxation channel. This mathematical framework allows both a qualitative interpretation and a quantitative fitting representation of scintillation non-proportionality response as function of kinetic rates. This method was successfully applied to thallium doped sodium iodide measured with SLYNCI, a new facility using the Compton coincidence technique. Finally, attention is given to the physical meaning of the dominant relaxation channels, and to the potential causes responsible for the scintillation nonproportionality. We find that thallium doped sodium iodide behaves as if non-proportionality is due to competition between radiative recombinations and non-radiative Auger processes.

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Section: B Relation Between Model Parameters and Scintillation Mechasupporting

confidence: 91%

Section: B Relation Between Model Parameters and Scintillation Mechamentioning

confidence: 67%

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Progress in Studying Scintillator Proportionality: Phenomenological Model

Bizarri

Cherepy

Choong

et al. 2009

IEEE Trans. Nucl. Sci.

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“…Furthermore, the LaBr 3 :Ce scintillator presents excellent scintillation properties. It has an extremely high light yield (63 photons/keV), the best energy resolution among scintillators (2.7% at 662 keV for small-volume crystals), excellent timing properties (300 ps of time resolution in small crystals) and a high density (5.1 g/cm 3 ) [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. For this reason the LaBr 3 :Ce scintillator can be used, both as the 138 La source and as the detector to measure the β − continuum spectrum.…”

mentioning

confidence: 99%

Measurement of β ⁻ -decay continuum spectrum of ¹³⁸ La

Giaz¹,

Gosta²,

Camera³

et al. 2015

EPL

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The LaBr3:Ce scintillator offers the unique opportunity to study the 138 La β − radioactive decay. This decay is a 2nd-order unique forbidden transition. The 138 La isotope is one of the rarest isotopes on earth (it is present as 0.09% in natural lanthanum) and it has an extremely long lifetime, of the order of 10 11 years. Large amounts of 138 La are, indeed, needed for the measurement of the β − -decay spectrum. In the literature, only one experimental measurement is present and the results are not reproduced by theoretical calculations. A second measurement of the β − continuum is presented in this work. For this measurement, two LaBr3:Ce scintillators (3 × 3 ) were used. The measured spectrum β − is found to be comparable to the one previously measured and published.

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