Unfolding analysis of LaBr3:Ce gamma spectrum with a detector response matrix constructing algorithm based on energy resolution calibration

Shi, Rui; Tuo, Xianguo; Li, Huailiang; Xu, Yangyang; Shi, Fanrong; Yang, Jianbo; Luo, Yonghong

doi:10.1007/s41365-017-0340-6

Cited by 36 publications

(1 citation statement)

References 27 publications

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“…The integrated LaBr 3 (Ce) detector consists of a crystal coupled directly to a selected photomultiplier tube (PMT). Previous studies of LaBr 3 (Ce) detectors [1, [7][8][9][10][11][12][13][14] show excellent linearity in γ ray response, a good energy resolution of less than 3% (FWHM) for the 662 keV γ ray for the size of up to φ3 ′′ × 3 ′′ , and an excellent time resolution of about ∼300 ps (FHWM). The latter has make a fast timing detector array composed of LaBr 3 (Ce) [15,16] pursued worldwide for nuclear structure studies.…”

Section: Introductionmentioning

confidence: 99%

Intrinsic radiation background of LaBr$_3$(Ce) detector via coincidence measurements and simulations

Cheng,

Sun,

Zhu

et al. 2020

Preprint

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The LaBr3(Ce) detector has attracted much attention in recent years for its superior characteristics to other scintillating materials in terms of resolution and efficiency. However, it has relatively high intrinsic radiation background due to the naturally occurring radioisotope in lanthanum, actinium and their daughter nuclei. This limits its applications in low counting rate experiments. In this paper, we identified the radioactive isotopes in the φ3 ′′ ×3 ′′ Saint-Gobain B380 detector by a coincidence measurement using a Clover detector in a low-background shielding system. Moreover, we carried out a Geant4 simulation to the experimental spectra to evaluate the activities of the main internal radiation components. The activity of radiation background of B380 is determined to be 1.480 (69) Bq/cm 3 , the main sources of which include 138 La of 1.425 (59) Bq/cm 3 , 211 Bi of 0.0136 (15) Bq/cm 3 , 219 Rn of 0.0125 (17) Bq/cm 3 , 223 Ra of 0.0127 (14) Bq/cm 3 , and 227 Th of 0.0158 (22) Bq/cm 3 .

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Section: Introductionmentioning

confidence: 99%

Intrinsic radiation background of LaBr$_3$(Ce) detector via coincidence measurements and simulations

Cheng,

Sun,

Zhu

et al. 2020

Preprint

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Local reduced subspaces of subchannel‐inspired subdomains

Ruan,

Yanez,

Class

2024

Numerical Meth Engineering

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In this article, we study an update of the traditional subchannel approximation utilizing local reduced order bases. Through employing the symmetries and periodicity of a 7‐pin bundle, the global domain is decomposed into numerous repeating subdomains following several dividing strategies. We locally study the reduced basis generated by proper orthogonal decomposition. We analyze the similarities, assessing the truncation error and the distance between the linear subspaces spanned by the reduced bases. We focus on the first stage of building a reduced order model, the generation of the reduced subspace, which is usually not regarded in detail in our application problem. Our assessment related to flow blockage in liquid metal‐cooled nuclear reactors, a postulated high‐risk accident that results in potential fuel damage.

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Detector response function establishment and deconvolution calculation analysis based on CdZnTe detector

Hei

et al. 2023

J Radioanal Nucl Chem

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Unfolding analysis of LaBr3:Ce gamma spectrum with a detector response matrix constructing algorithm based on energy resolution calibration

Cited by 36 publications

References 27 publications

Intrinsic radiation background of LaBr$_3$(Ce) detector via coincidence measurements and simulations

Intrinsic radiation background of LaBr$_3$(Ce) detector via coincidence measurements and simulations

Local reduced subspaces of subchannel‐inspired subdomains

Detector response function establishment and deconvolution calculation analysis based on CdZnTe detector

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