Publication date: March 2018
Source:Journal of Environmental Radioactivity, Volume 183
Author(s): S. Mohammad Modarresi, S. Farhad Masoudi
The relative discrepancies between the gamma spectrometry efficiency of RGU, RGTh, RGK reference materials and some soil samples have been studied using a MCNP model of a real HPGe detector. It has been shown that, in a specified geometry, efficiencies differences depend on the sample elemental composition. The elemental compositions of RGU-1, RGTh-1 reference materials and a soil sample have been evaluated using X-Ray fluorescence (XRF) method and used in the MCNP simulation along with RGK-1 and six other soil samples with different elemental compositions to calculate their efficiencies in different gamma ray energies. To estimate the maximum relative efficiencies differences between soil samples and reference materials, five soil samples with higher attenuation properties were selected from a large data set of soils elemental compositions. The results show that the efficiency differences between soil samples and reference materials are almost ignorable for more than 100 KeV gamma energies. It strongly depends on the sample attenuation factor in the lower energies, so use of a self-attenuation correction is essential for radionuclide counting in low energies gamma rays. Results show about 8 percent discrepancy between RGU and two soil samples efficiencies in 63.2 KeV energy.
from Imaging via alkiviadis.1961 on Inoreader http://ift.tt/2ETx86i
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Δημοφιλείς αναρτήσεις
-
Publication date: Available online 4 January 2018 Source: European Journal of Radiology Author(s): Peiyao Zhang, Jing Wang, Qin Xu, Zhen...
-
Related Articles Anatomic parameters of the sacral lamina for osteosynthesis in transverse sacral fractures. Surg Radiol Anat....
-
Background Hyperthyroidism is associated with increased thrombotic risk. As contact system activation through formation of neutrophil extrac...
-
Consulting to Finance: How to Network, Tell Your Story, Spin Your Resume, and Dominate Your Investment Banking and Private Equity Interviews...
-
Abstract Purpose Investigate in patients with metastatic and/or irresectable colorectal cancer treated with systemic treatment with cape...
-
Abstract Objectives (1) To illustrate and describe the main types of pancreatic surgery; (2) to discuss the normal findings after pancre...
-
In rural Kenya, traditional and faith healers provide an alternative pathway to health care, including mental health care. However, not much...
-
2016-12-10T02-17-59Z Source: Indo American Journal of Pharmaceutical Research R. Santosh Kumar*, T. Naga Satya Yagnesh. Solid dispersio...
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου