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Watabe, Hiroshi*; Sato, Tatsuhiko; Yu, K. N.*; Zivkovic, M.*; Krstic, D.*; Nikezic, D.*; Kim, K. M.*; Yamaya, Taiga*; Kawachi, Naoki*; Tanaka, Hiroki*; et al.
Radiation Protection Dosimetry, 13 Pages, 2023/00
Times Cited Count：0 Percentile：0.01(Environmental Sciences)Previously, we have developed DynamicMC for modelling relative movement of ORNL phantom in a radiation field for MCNP. Using this software, 3-dimensional dose distributions in a phantom irradiated by a certain mono-energetic source can be deduced through its graphical user interface (GUI). In this study, we extended DynamicMC to be used in combination with the PHITS by providing it with a higher flexibility for dynamic movement for a less sophisticated anthropomorphic phantom. We anticipate that the present work and the developed open-source tools will be in the interest of nuclear radiation physics community for research and teaching purposes.
from synthetic, pharmaceutical and alloy samplesNaushad, M.*; Alothman, Z. A.*; Alam, M. M.*; Awual, M. R.; Eldesoky, G. E.*; Islam, M.*
Journal of the Iranian Chemical Society, 12(9), p.1677 - 1686, 2015/09
Times Cited Count：60 Percentile：84.07(Chemistry, Multidisciplinary)Islam, M. A.*; Ebihara, Mitsuru*; Toh, Yosuke; Murakami, Yukihiro*; Harada, Hideo
Applied Radiation and Isotopes, 70(8), p.1531 - 1535, 2012/08
Times Cited Count：1 Percentile：10.14(Chemistry, Inorganic & Nuclear)In this study, the MPGA system was characterized for nondestructive multi-element analysis of geological and cosmochemical samples. Among the three offline sorting modes of coincidence data in MPGA, the add-back mode resulted in relatively high analytical sensitivity and the lowest detection limit. The system is highly sensitive to Sm, Gd and Cd. When MPGA detection limits of the studied elements were compared with other cold neutron facilities, MPGA detection limits for Mg, K, S and Cl were improved around one order of magnitude than other facilities under the present experimental conditions, which consists of 8 Clover and BGO detectors. Analysis of the meteorite Orgueil by both MPGA and PGA imply that MPGA can be used for elemental analysis with sufficient accuracy. For some elements (such as Sm, K and Mg) which can Gnot be determined by conventional PGA, due to the spectral interference or lower sensitivity, it was observed that they could be determined accurately (3%) by MPGA.
-ray analysis and prompt -ray analysis for the elemental analysis of geochemical and cosmochemical samplesIslam, M. A.*; Ebihara, Mitsuru*; Toh, Yosuke; Harada, Hideo
Analytical Chemistry, 83(19), p.7486 - 7491, 2011/10
Times Cited Count：14 Percentile：42.79(Chemistry, Analytical)Multiple prompt -ray analysis (MPGA) and prompt -ray analysis (PGA) are non destructive analytical methods for bulk chemical compositions and their analytical capabilities were compared for elemental analyses of geological and cosmochemical samples. MPGA can substantially reduce the background level, especially for hydrogenous samples relative to PGA, which opens up a possibility to use lower energy -ray of some trace elements. Although it is one of major constituent elements of rock samples, Mg is hard to be determined by PGA. With MPGA, Mg contents could be determined with reasonable consistency with their corresponding recommended values in the samples by carefully selecting suitable -ray pairs without interference correction. MPGA was applied to a hydrogenous meteorite, Ivuna. MPGA detection limits for most of the elements studied can be reduced up to one order of magnitude when compared with PGA detection limits under the present experimental conditions.
