Investigation of the PGNAA using the LaBr3 scintillation detector

Favalli, Andrea; Mehner, H.-C.; Ciriello, V.; Pedersen, B.

doi:10.1016/j.apradiso.2009.09.058

Cited by 37 publications

(12 citation statements)

References 5 publications

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“…The energies of the gamma-rays are characteristic, and the number of detected gamma-rays are proportional to the concentration of corresponding isotopes [10]. Therefore, the prompt gamma-rays spectrum that picked up by the detector contains quantitative and qualitative information of the tested sample.…”

Section: Methodsmentioning

confidence: 99%

A Method for Measuring Moisture Content in Landfills Based on PGNAA Technique

Ling¹,

Li²,

Zhang³

et al. 2017

Proceedings of the 2017 2nd International Symposium on Advances in Electrical, Electronics and Computer Engineering (ISAEECE 20

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Abstract.A new method based on PGNAA technique has been proposed for moisture content and elements concentration determination in landfills. Due to the complexity of MSW component, the compounds of polyethylene balls, glass balls and water were selected as the MSW alternatives for research. By changing the proportion of polyethylene and glass ball, water contents of five samples were regulated to 40.522%, 47.575%, 55.168%, 63.369%, 72.251%, respectively. Based on a new set-up was developed to validate the method by MCNP simulations and experimental researches. The results show that the counts of hydrogen peak increase with the increase of the moisture content for samples, and good linearity can be figured out between the counts of hydrogen peak.

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Section: Methodsmentioning

confidence: 99%

A Method for Measuring Moisture Content in Landfills Based on PGNAA Technique

Ling¹,

Li²,

Zhang³

et al. 2017

Proceedings of the 2017 2nd International Symposium on Advances in Electrical, Electronics and Computer Engineering (ISAEECE 20

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“…Several research papers in the literature show that the LaBr 3 :Ce response in terms of number of scintillation photons emitted with respect to the energy deposited by  rays is extremely linear [51][52][53], except in the very low-energy range below 100 keV [52]. Unfortunately, the very fast and intense flashes of LaBr 3 :Ce scintillation light may easily produce non linear response in the PMTs [37,39,47,54,55] especially in case of events which deposit several MeV of energy. The photoelectron current peak induced on PMTs coupled to LaBr 3 :Ce scintillators is indeed ≈ 25 times higher with respect to NaI(Tl) scintillators.…”

Section: Detector Response To  Raysmentioning

confidence: 99%

“…Because of efficiency considerations, the availability of large volume crystals is a key aspect in the design of a high-energy -ray detector array. Quite a large amount of works with small sized LaBr 3 :Ce detectors can be found in the literature [7,8,12,14,19], but only very few works related to medium volume detectors are available [7,13,[32][33][34][35][36][37][38][39] and even less information is available for large volume LaBr 3 :Ce detectors [40]. It is also important to point out that the properties of large volume LaBr3:Ce crystals cannot be easily derived from those of small and medium sized detectors.…”

Section: Introductionmentioning

confidence: 99%

Characterization of large volume 3.5″×8″ LaBr3:Ce detectors

Giaz¹,

Pellegri²,

Riboldi³

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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The properties of large volume cylindrical 3.5" x 8" (89 mm x 203 mm) LaBr 3 :Ce scintillation detectors coupled to the Hamamatsu R10233-100SEL photo-multiplier tube were investigated. These crystals are among the largest ones ever produced and still need to be fully characterized to determine how these detectors can be utilized and in which applications. We tested the detectors using monochromatic ray sources and in-beam reactions producing  rays up to 22.6 MeV; we acquired PMT signal pulses and calculated detector energy resolution and response linearity as a function of -ray energy. Two different voltage dividers were coupled to the Hamamatsu R10233-100SEL PMT: the Hamamatsu E1198-26, based on straightforward resistive network design, and the "LABRVD", specifically designed for our large volume LaBr 3 :Ce scintillation detectors, which also includes active semiconductor devices. Because of the extremely high light yield of LaBr 3 :Ce crystals we observed that, depending on the choice of PMT, voltage divider and applied voltage, some significant deviation from the ideally proportional response of the detector and some pulse shape deformation appear. In addition, crystal non-homogeneities and PMT gain drifts affect the (measured) energy resolution especially in case of high-energy  rays. We also measured the time resolution of detectors with different sizes (from 1"x1" up to 3.5"x8"), correlating the results with both the intrinsic properties of PMTs and GEANT simulations of the scintillation light collection process. The detector absolute full energy efficiency was measured and simulated up to -rays of 30 MeV

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“…Recently developed lanthanide-based gamma ray detectors have excellent energy and time resolutions (Favalli et al, 2010;Van Loef et al, 2001). They have high potential for applications in studies involving pulse height spectroscopy (Camera et al, 2014;Giaz et al, 2013;Menge et al, 2007;Naqvi et al, 2011Naqvi et al, , 2012aNaqvi et al, , 2012bOwens et al, 2007) and timing analysis (Iltisa et al, 2006;Kuhn et al, 2004Kuhn et al, , 2005Kuhn et al, , 2006Surti et al, 2003).…”

Section: Introductionmentioning

confidence: 99%