Optimization of gamma-ray detectors in neutron-induced gamma-ray spectroscopy for geophysical applications

Jeon, Jihye; Park, Chang Je; Kim, Geehyun

doi:10.1016/j.nima.2019.06.043

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…The LaBr 3 (Ce) scintillation counter, which has been widely used in regional geophysical exploration, radiation environment monitoring, nuclear medicine, astrophysical measurement and other fields, has the advantages of high resolution and high detection efficiency [1][2][3][4][5][6]. However, the intrinsic radioactivity background of the LaBr 3 (Ce) scintillation counter limits its application [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Study on the γ + X, γ + β, γ + α Coincidence Summing Effects of the Intrinsic Background Instrument Spectrum of a LaBr3(Ce) Scintillation Counter

Sun

et al. 2020

J. Korean Phys. Soc.

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The energy resolution of a LaBr3(Ce) scintillation counter can reach 2.7% (662 keV) at room temperature. As a radiation measuring device, it has remarkably good characteristics. However, the LaBr3(Ce) crystal has its own intrinsic radioactivity background, which mainly comes from 138 La and from 227 Ac and its daughters. 138 La can emit β, γ and X-rays through β and γ decay; 227 Ac and its daughters can emit α, β and γ-rays through α, β and γ decay. α, γ and X-ray energy are characteristic while β-ray energy is continuous. The energy of α, β and X-rays is mainly deposited in the crystal unless the α, β and X-rays at the edge of the crystal can escape from the crystal. Therefore, the α, β, γ and X-rays generated by the intrinsic radioactivity of the crystal are superimposed on the instrument spectrum, which makes the instrument spectrum more complicated and produces the coincidence summing effects of γ + X, γ + β and γ + α. In this research, the GEANT4.9.5 software package was used to simulate the spectra of α, β, γ and X-rays. On the basis of a combination of fitting decomposition and reconstruction, the simulation spectrum of the LaBr3(Ce) self-radioactive background was obtained accurately and was verified by using physical experiments.

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Section: Introductionmentioning

confidence: 99%

“…List of partial γ and α energies of the γ + α spectrum, the signature probabilities calculated according to Refs. 1-20, Qα energy and the half-lifes of 227 Ac and its daughters[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

mentioning

confidence: 99%

Study on the γ + X, γ + β, γ + α Coincidence Summing Effects of the Intrinsic Background Instrument Spectrum of a LaBr3(Ce) Scintillation Counter

Sun

et al. 2020

J. Korean Phys. Soc.

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Simulations of absolute porosity measurements by compensated neutron logging tools mounted with stilbene or CLYC scintillators

Han,

Kim

2024

Nuclear Instruments and Methods in Physics Research Section A:

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Modeling gamma detectors in OpenMC: Validation of a newly implemented pulse-height tally

Fichtlscherer,

Miah,

Frieß

et al. 2024

Progress in Nuclear Energy

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Optimization of gamma-ray detectors in neutron-induced gamma-ray spectroscopy for geophysical applications

Cited by 4 publications

References 7 publications

Study on the γ + X, γ + β, γ + α Coincidence Summing Effects of the Intrinsic Background Instrument Spectrum of a LaBr3(Ce) Scintillation Counter

Study on the γ + X, γ + β, γ + α Coincidence Summing Effects of the Intrinsic Background Instrument Spectrum of a LaBr3(Ce) Scintillation Counter

Simulations of absolute porosity measurements by compensated neutron logging tools mounted with stilbene or CLYC scintillators

Modeling gamma detectors in OpenMC: Validation of a newly implemented pulse-height tally

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