Virtual point source efficiency calibration technology based on virtual point detector

Tian Zining; Liu Wenbiao; Chen Wei; Long Bin; Feng Tiancheng; Wang Xuemei; Ouyang Xiaoping

doi:10.11884/HPLPB201830.170278

Volume 30 Issue 3

Mar. 2018

Turn off MathJax

Article Contents

Article Navigation > High Power Laser and Particle Beams > 2018 > 30(3): 034001

Tian Zining, Liu Wenbiao, Chen Wei, et al. Virtual point source efficiency calibration technology based on virtual point detector[J]. High Power Laser and Particle Beams, 2018, 30: 034001. doi: 10.11884/HPLPB201830.170278

Citation:

Tian Zining, Liu Wenbiao, Chen Wei, et al. Virtual point source efficiency calibration technology based on virtual point detector[J]. High Power Laser and Particle Beams, 2018, 30: 034001. doi: 10.11884/HPLPB201830.170278

Citation:

PDF( 1807 KB)

Virtual point source efficiency calibration technology based on virtual point detector

doi: 10.11884/HPLPB201830.170278

Northwest Institute of Nuclear Technology, Xi'an 710024, China

Received Date: 2017-07-05
Rev Recd Date: 2017-11-06
Publish Date: 2018-03-15

Abstract

Abstract

The detection efficiency of ϕ75 mm×25 mm of ²⁴¹Am standard samples were studied by using laboratory HPGe detection. When we used detectors with the same type of structure to measure a given volume source, the linearity function between the virtual point source and the virtual point detector was established by using LabSOCS software and Monte Carlo method. For a detector, the position of virtual point detector can be fixed by a point source placed at different height, and then, the position of virtual point source can be fixed by using their linearity function. The real calibration process will be carried out by placing a point source at its virtual position, namely, the volume source is replaced with the point source. In conclusion, the position of virtual point source can be obtained through the virtual point detector. This is a completely new technology method, which will be widely applied in radioactive measurement.
- virtual point source,
- virtual point detector,
- Monte Carlo method,
- efficiency calibration

FullText(HTML)

References(9)

References

[1]	Schulze J, Auer M, Werzi R. Low level radioactivity measurement in support of the CTBTO[J]. Appl Radiat Isot, 2000, 53 (1/2): 23-30.
[2]	Zhang W, Mekarski P, Ungar K. Beta-gamma coincidence counting efficiency and energy resolution optimization by Geant4 Monte Carlo simulations for a phoswich well detector[J]. Appl Radiat Isot, 2010, 68 (12): 2377-2381. doi: 10.1016/j.apradiso.2010.06.007
[3]	Petit G L, Jutier C, Gross P, et al. Low-level activity measurement of ¹³¹Xem, ¹³³Xem, ¹³⁵Xe and ¹³³Xe in atmospheric air samples using high-resolution dual X-γ spectrometry[J]. Appl Radiat Isot, 2006, 64 (10/11): 1307-1312.
[4]	田自宁, 欧阳晓平, 黄雄亮, 等. 氙气样品的点源效率函数法HPGe谱仪测量[J]. 核技术, 2011, 34 (11): 832-836. https://www.cnki.com.cn/Article/CJFDTOTAL-HJSU201111008.htm Tian Zining, Ouyang Xiaoping, Huang Xiongliang, et al. Measuring xenon activity by HPGe gamma spectrometry using efficiency function of point sources. Nucl Sci Tech, 2011, 34 (11): 832-836 https://www.cnki.com.cn/Article/CJFDTOTAL-HJSU201111008.htm
[5]	田自宁, 欧阳晓平, 曾鸣, 等. 积分中值定理在放射性氙样品γ谱效率刻度技术中的应用[J]. 物理学报, 2013, 62 : 162902. doi: 10.7498/aps.62.162902 Tian Zining, Ouyang Xiaoping, Zeng Ming, et al. Application of mean value theorem of integrals in the efficiency callibration technology of radioactive xenon sample. Acta Physica Sinica, 2013, 62 : 162902 doi: 10.7498/aps.62.162902
[6]	田自宁, 陈伟, 韩斌, 等. 基于放射性气体源体积的虚拟源刻度技术[J]. 物理学报, 2016, 65 : 062901. doi: 10.7498/aps.65.062901 Tian Zining, Chen Wei, Han Bin, et al. Study on the virtual source calibration technology based on the volume of radioactive gas source. Acta Physica Sinica, 2016, 65 : 062901 doi: 10.7498/aps.65.062901
[7]	Mohammadi M A, Abdi M R, Kamali M, et al. Evaluation of HPGe detector efficiency for point sources using virtual point detector model[J]. Appl Radiat Isot, 2011, 69 (2): 521-526. doi: 10.1016/j.apradiso.2010.10.024
[8]	Presler O, Peled O, German U, et al. Off-center efficiency of HPGe detectors[J]. Nucl Instr Meth Phys Res A, 2002, 484 (1/3): 444-450.
[9]	Presler O, German U, Pelled O, et al. The validity of the virtual point detector concept for absorbing media[J]. Appl Radiat Isot, 2004, 60 (2/4): 213-216.