Monte Carlo analysis of the influence of germanium dead layer thickness on the HPGe gamma detector experimental efficiency measured by use of extended sources

Chham, E.; Piñero-García, F.; Bardouni, T. El; Ferro-Garcı́a, M.A.; Azahra, M.; Benaalilou, K.; Krikiz, M.S.; Elyaakoubi, H.; Bakkali, Jaafar El; Kaddour, M.

doi:10.1016/j.apradiso.2014.09.007

Cited by 30 publications

(12 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…There is also a certain uncertainty in the crystal parameters e.g. the dead layer thicknesses [34] or the distance between end cap and Ge crystal. It has also been observed, that there can be a substantial increase of the dead layer thickness after some years of operating time [35].…”

Section: Efficiency Of the Detectormentioning

confidence: 99%

Preliminary study of feasibility of an experiment looking for excited state double beta transitions in tin

Das¹,

Ghorui²,

Raina³

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

a b s t r a c tAn attempt to study the feasibility of a new experiment to search for double beta decay in 112 Sn and 124 Sn was carried out by using ultra-low background HPGe detector (244 cm 3 ) inside the Gran Sasso National Laboratory (LNGS) of the INFN (Italy). A small sample of natural Sn was examined for 2367.5 h. The radioactive contamination of the sample has been estimated. The data has also been considered to calculate the present sensitivity for the proposed search; half-life limits $ 10 17 -10 18 years for β þ EC and EC-EC processes in 112 Sn and $ 10 18 years for β À β À transition in 124 Sn were measured. In the last section of the paper the enhancement of the sensitivity for a proposed experiment with larger mass to reach theoretically estimated values of half-lives is discussed.

show abstract

Section: Efficiency Of the Detectormentioning

confidence: 99%

Preliminary study of feasibility of an experiment looking for excited state double beta transitions in tin

Das¹,

Ghorui²,

Raina³

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

show abstract

“…Some techniques for evaluating the efficiency calibration of a detector include the implementation of Monte Carlo simulation (MCS) (Ewa, Bodizs, Czifrus, & Molnar, 2001;Rodenas, Martinavarro, & Rius, 2000;Vidmar & Vodenik, 2010) or a combination of both MCS and genetic algorithms (Quang, Do, & Vo, 2012). In MCS, it is important to have detailed information about the configuration, dimensions, and constituent materials of the detector, which are usually different from the manufacturer's specifications (Andreotti et al, 2014), especially in the case of old detectors that have dead layer formation, as noted in HPGe detectors (Chham et al, 2015;Rodenas et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Detection efficiency of NaI(Tl) detector based on the fabricated calibration of HPGe detector

El-Gamal¹,

Negm²,

Hasabelnaby³

2019

Journal of Radiation Research and Applied Sciences

View full text Add to dashboard Cite

Determination of the full-energy peak efficiency of a detection system is significant in the activity calculation of the measured radioactive samples. In this work, we present an experimental method to determine the absolute efficiency calibration of a NaI(Tl) detector, considering that a standard source of interest is unavailable and by using the known specific activity of a standard sample measured using a HPGe detector. The efficiency of a gamma-ray spectrometer that consists of a coaxial HPGe detector is calculated using Canberra ISOCS/LabSOCS software and a fabricated calibration source. To validate our method, environmental samples (rock and soil samples) were analyzed on both the detectors. The obtained activity concentrations were checked by means of the IAEA proficiency test procedure. The performance criteria evaluation results were found to be 'Acceptable' for all the analytical determinations of all the radionuclides under study, except for the samples with low activity (<15 Bq kg −1 and <10 Bq kg −1 for 226 Ra and 232 Th, respectively). The precision of the low-activity samples was not considered 'Acceptable' as the results were slightly inaccurate; in this case, the results were considered as 'Warning' because the relative bias (RB) was less than the maximum acceptable bias (MAB).

show abstract

“…In a sep a rate work, Dryak and Kovar [20] used a collimated pho ton beam of 59.5 keV from an Am-241 source from var i ous in ci dence an gles on the front face of an HPGe de tec tor to de ter mine the ef fec tive thickness of the dead layer. Like wise, many re search ers found it nec es sary to op ti mize the dead layer thick ness in or der to re move dis crep an cies be tween ex per i mental ob ser va tions and cor re spond ing Monte Carlo sim ulated val ues [21][22][23][24][25][26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Stochastic simulation study of HPGe detector response and the effect of detector aging using Geant4

et al. 2017

View full text Add to dashboard Cite

show abstract

Monte Carlo analysis of the influence of germanium dead layer thickness on the HPGe gamma detector experimental efficiency measured by use of extended sources

Cited by 30 publications

References 6 publications

Preliminary study of feasibility of an experiment looking for excited state double beta transitions in tin

Preliminary study of feasibility of an experiment looking for excited state double beta transitions in tin

Detection efficiency of NaI(Tl) detector based on the fabricated calibration of HPGe detector

Stochastic simulation study of HPGe detector response and the effect of detector aging using Geant4

Contact Info

Product

Resources

About