Evaluation of HPGe detector efficiency for point sources using virtual point detector model

Studying of characteristics of the HPGe detector for radioactivity measurements

“…In this case, the range of distances is limited due to the low count rates at large distances, yielding poor statistical data and large errors. When using higher activity sources, dead-time and coincidence problems may arise very close to the detector surface, and the smallest distance between the source and the detector cap that yields a reasonable dead-time [14,16].…”

Evaluation of Full-Energy-Peak Efficiencies for a Labr3:Ce Scintillator Through a Virtual Point Detector Approach

“…The VPD concept was extensively applied to Si(Li) detector (Alfassi and Othman, 1977), HPGe detectors (Alfassi et al, 2006(Alfassi et al, , 2007Hoover, 2007;Mahling et al, 2006;Mohammadi et al, 2011;Presler et al, 2002Presler et al, , 2004Rizzo and Tomarchio, 2010), NaI(Tl) and BGO scintillators (Presler et al, 2006). Its validity has been demonstrated also for sources located off-axis of the detector (Presler et al, 2002) as well as for volume sources (Presler et al, 2004), while the dependence of the VPD position on the detector size has been highlighted for HPGe detectors in (Mahling et al, 2006) and for scintillators in (Chuong et al, 2020;Rubin et al, 2019).…”

Determination of the dependence of HPGe virtual point detector location on source dimensions in 60 keV–2 MeV range using Monte Carlo simulation

“…The VPD was found an application to coincidence summing correction in gamma-ray spectrometry [13]. The evaluation of HPGe detector efficiency was studied using VPD concept for point sources [14].…”