Attenuation correction factors for cylindrical, disc and box geometry

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• 作者：Chhavi Agarwal ; Sanhita Poi ; Amol Mhatre ; A. Goswami ; M. Gathib ; he
• 关键词：Attenuation correction ; High resolution gamma ray spectrometry ; HPGe detector ; Monte Carlo methods ; Near-field geometry ; Far-field geometry
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2009
• 出版时间：11 August 2009
• 年：2009
• 卷：607
• 期：2
• 页码：439-445
• 全文大小：430 K

文摘

In the present study, attenuation correction factors have been experimentally determined for samples having cylindrical, disc and box geometry and compared with the attenuation correction factors calculated by Hybrid Monte Carlo (HMC) method [ C. Agarwal, S. Poi, A. Goswami, M. Gathibandhe, R.A. Agrawal, Nucl. Instr. and. Meth. A 597 (2008) 198] and with the near-field and far-field formulations available in literature. It has been observed that the near-field formulae, although said to be applicable at close sample-detector geometry, does not work at very close sample-detector configuration. The advantage of the HMC method is that it is found to be valid for all sample-detector geometries.