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タイトル: Reaction-yield dependence of the (γ, γ′) reaction of 238 U on the target thickness
著者: Negm, Hani
Ohgaki, Hideaki
Daito, Izuru
Hayakawa, Takehito
Zen, Heishun
Kii, Toshiteru
Masuda, Kai  kyouindb  KAKEN_id
Hori, Toshitada
Hajima, Ryoichi
Shizuma, Toshiyuki
Kikuzawa, Nobuhiro
著者名の別形: 大垣, 英明
キーワード: NRF
SNMs
LCS
NRF RY model
thickness dependence
saturation
(238)U
cross section
Monte Carlo simulation
HPGe
発行日: 21-Nov-2014
出版者: Taylor & Francis Group
誌名: Journal of Nuclear Science and Technology
巻: 52
号: 6
開始ページ: 811
終了ページ: 820
抄録: The dependence of the nuclear resonance fluorescence (NRF) yield on the target thickness was studied. To this end, an NRF experiment was performed on 238U using a laser Compton back-scattering (LCS) γ-ray beam at the High Intensity γ-ray Source facility at Duke University. Various thicknesses of depleted uranium targets were irradiated by an LCS γ-ray beam with an incident beam energy of ∼2.475 MeV. The scattering NRF γ-rays were measured using an High-purity Germanium (HPGe) detector array positioned at scattering angles of 90° relative to the incident γ-beam. An analytical model for the NRF reaction yield (NRF RY model) is introduced to interpret the experimental data. Additionally, a Monte Carlo simulation using GEANT4 was performed to simulate the NRF interaction for a wide range of target thicknesses of the 238U. The measured NRF yield shows the saturation behavior. The results of both of the simulation and the analytical model can reproduce the saturation curve of the scattering NRF yield of 238U against the target thickness. In addition, we propose a method to deduce the precise integral cross section of the NRF reaction by fitting the NRF yield dependency on the target thickness without any absolute measurements.
著作権等: This is an Accepted Manuscript of an article published by Taylor & Francis in 'Journal of Nuclear Science and Technology' on 21 Nov 2014, available online: http://www.tandfonline.com/10.1080/00223131.2014.980348.
The full-text file will be made open to the public on 21 Nov 2015 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/200744
DOI(出版社版): 10.1080/00223131.2014.980348
出現コレクション:学術雑誌掲載論文等

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