Observations on the background spectra of four LaCl3(Ce) scintillation detectors

Hartwell, J.K.; Gehrke, R.J.

doi:10.1016/j.apradiso.2005.02.009

Cited by 34 publications

(20 citation statements)

References 4 publications

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“…4). We estimate the light signal for alpha particles in LaBr 3 to be 35% of that for gamma-rays, in agreement with that measured by Hartwell and Gehrke for LaCl 3 [7].…”

Section: Intrinsic Activitysupporting

confidence: 70%

X-ray and gamma-ray response of a 2″×2″ LaBr3:Ce scintillation detector

Quarati

Bos

Brandenburg

et al. 2007

Nuclear Instruments and Methods in Physics Research Section A:

120

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“…4). We estimate the light signal for alpha particles in LaBr 3 to be 35% of that for gamma-rays, in agreement with that measured by Hartwell and Gehrke for LaCl 3 [7].…”

Section: Intrinsic Activitysupporting

confidence: 70%

X-ray and gamma-ray response of a 2″×2″ LaBr3:Ce scintillation detector

Quarati

Bos

Brandenburg

et al. 2007

Nuclear Instruments and Methods in Physics Research Section A:

120

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“…However, the total alpha peak count rate was only 0.0166 0.0003 counts/s/cm 3 of detector volume, a value lower than we have measured on other lanthanum-based scintillators [5].…”

Section: A Measurement Techniquementioning

confidence: 54%

Design and testing of a unique active compton-suppressed LaBr<inf>3</inf>(Ce) detector system for improved sensitivity assays of TRU in remote-handled TRU wastes

Hartwell

McIlwain

Kulisek

2007

2007 IEEE Nuclear Science Symposium Conference Record

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Abstract-The US Department of Energy's transuranic (TRU)waste inventory includes about 4,500 m 3 of remote-handled TRU (RH-TRU) wastes composed of a variety of containerized waste forms having a contact surface dose rate that exceeds 2 mSv/hr (200 mrem/hr) containing waste materials with a total TRU concentration greater than 3700 Bq/g (100 nCi/g). As part of a research project to investigate the use of active Comptonsuppressed room-temperature gamma-ray detectors for direct non-destructive quantification of the TRU content of these RH-TRU wastes, we have designed and purchased a unique detector system using a LaBr 3 (Ce) primary detector and a NaI(Tl) suppression mantle.The LaBr 3 (Ce) primary detector is a cylindrical unit ~25 mm in diameter by 76 mm long viewed by a 38 mm diameter photomultiplier. The NaI(Tl) suppression mantle (secondary detector) is 175 mm by 175 mm with a center well that accommodates the primary detector. An important feature of this arrangement is the lack of any "can" between the primary and secondary detectors.These primary and secondary detectors are optically isolated by a thin layer (.003") of aluminized Kapton. This arrangement virtually eliminates the "dead" material between the primary and secondary detectors, a feature that preliminary modeling indicated would substantially improve the Compton suppression capability of this device. This paper presents both the expected performance of this unit determined from modeling with MCNPX, and the performance measured in our laboratory with radioactive sources.

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“…There is also contamination from the α-decay of 227 Ac, which manifests itself as multiple peaks at energies above 1.7 MeV. Although the α particles have energies in the range of 4-6 MeV, they appear in the 1.7-2.3 MeV [18] range in the γ-ray spectrum due to the quenching of their light signal by 65% [19]. The counting rate for the total self-activity shown in the left panel of Figure 2 was found to be ∼5 …”

Section: Characterisation Of the Labr (Ce) Detectorsmentioning

confidence: 99%

Development of a LaBr₃(Ce) Fast-timing Array for FAIR

Roberts

Bruce

Patel

et al. 2013

EPJ Web of Conferences

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Abstract. A γ-ray spectrometer with fast-timing capabilities, constructed of LaBr 3 (Ce:5%) detectors, is under development for use at the future Facility for Anti-proton and Ion Research (FAIR). The physics aims of this device are to measure the half-lives of excited states in the region of ∼50 ps to several ns, in exotic nuclei. Monte-Carlo simulations using the GEANT4 software package have determined the final design of this fasttiming array by calculating the full-energy peak efficiencies of several different detector geometries. The results of the simulated efficiencies for each configuration were used to calculate the timing precision. Consequently, an array of thirty six, ø3.8x5.1 cm cylindrical crystals was found to be the optimum configuration. The detectors were purchased and subsequently characterised, with each detector found to have intrinsic energy and timing resolutions of ∼ 2.8 % (FWHM) and ∼ 210 ps (FWHM) for the 1173 and 1332 keV decays from 60 Co.

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Observations on the background spectra of four LaCl3(Ce) scintillation detectors

Cited by 34 publications

References 4 publications

X-ray and gamma-ray response of a 2″×2″ LaBr3:Ce scintillation detector

X-ray and gamma-ray response of a 2″×2″ LaBr3:Ce scintillation detector

Design and testing of a unique active compton-suppressed LaBr<inf>3</inf>(Ce) detector system for improved sensitivity assays of TRU in remote-handled TRU wastes

Development of a LaBr₃(Ce) Fast-timing Array for FAIR

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Observations on the background spectra of four LaCl3(Ce) scintillation detectors

Cited by 34 publications

References 4 publications

X-ray and gamma-ray response of a 2″×2″ LaBr3:Ce scintillation detector

X-ray and gamma-ray response of a 2″×2″ LaBr3:Ce scintillation detector

Design and testing of a unique active compton-suppressed LaBr<inf>3</inf>(Ce) detector system for improved sensitivity assays of TRU in remote-handled TRU wastes

Development of a LaBr3(Ce) Fast-timing Array for FAIR

Contact Info

Product

Resources

About

Development of a LaBr₃(Ce) Fast-timing Array for FAIR