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Measurement and analysis of neutron capture rate of U-238 in an alternate depleted uranium/polyethylene system

Yan Xiao-Song Liu Rong Lu Xin-Xin Jiang Li Wang Mei Lin Ju-Fang

Measurement and analysis of neutron capture rate of U-238 in an alternate depleted uranium/polyethylene system

Yan Xiao-Song, Liu Rong, Lu Xin-Xin, Jiang Li, Wang Mei, Lin Ju-Fang
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  • In order to check the conceptual design of subcritical reactor, an alternate depleted uranium/polyethylene-shell simulation device was established, to carry out uranium-238 neutron capture rate experiment using activation technique. The depleted uranium foils were activated at 90o to the incident. By measuring the 277.6 keV -ray emitted from 239Np generated by 238U (n, ) 239U reaction and correcting self-absorption of uranium experimentally, the 238U (n, ) reaction rate with an uncertainty between 3.5% and 3.7% and a total neutron capture of 2.24 0.09 of the system were obtained. The experiment was simulated using MCNP5 code with ENDF libraries. The simulations and measurements accord within 5% for the 238U (n, ) reaction rate and within 1% for the total neutron capture rate of 238U.
    • Funds: Project supported by the Chinese Special Project for ITER (Grant No. 2010GB111002).
    [1]

    Shi X M, Peng X J 2010 Nucl. Power Eng. 31 5 (in Chinese) [师学明, 彭先觉 2010 核动力工程 31 5]

    [2]

    Weale J W, Goodfellow H, McTaggart M H, Mullender M L 1961 J. Nucl. Energy 14 91

    [3]

    Haight R C, Lee J D, Maniscalco J A 1976 Nucl. Sci. Eng. 61 53

    [4]

    Akiyama M, Oka Y, Kanasugi K, Hashikura H, Kondo S 1987 Ann. Nucl. Energy 14 543

    [5]

    Wang D L, Chen S H, Kang W, You Y, Huang W D, Zhang X Y 1997 Atom. Energy Sci. Technol. 31 229 (in Chinese) [王大伦, 陈素和, 亢武, 游泳, 黄卫东, 张秀岩 1997 核能科学与工程 31 229]

    [6]

    ENDF/B-VI Decay Data, Joseph A C http: // t2. lanl. gov/data/ decayd. html [2011-05-20]

    [7]

    Rajput M U, MacMahon T D 1995 J. Radioanal. Nucl. Chem. 189 51

    [8]

    Quang E, Knoll G F 1992 Nucl. Sci. Eng. 110 282

    [9]

    Bergmann U C, Chawla R, Jatuff F, Murphy M F 2006 Nucl. Instrum. Meth. A 556 331

    [10]

    Koberl O, Seiler R, Chawla R 2004 Nucl. Sci. Eng. 146 1

    [11]

    Cullen D E, Hubbel J H, Kissel L 1997 UCRL -50400 6 1

    [12]

    Poenitz W P, Fawcett L R, Smith J, Smith D L 1981 Nucl. Sci. Eng. 78 239

    [13]

    Dilorio G J, Poenitz W P 1982 Nucl. Instrum. Meth. 198 461

    [14]

    Liu R, Lin L B, Wang D L, Li Y J, Jiang L, Chen S H, Wang M, Yang K 1999 Nucl. Electron. Detection Technol. 19 428 (in Chinese) [刘荣, 林理彬, 王大伦, 励义俊, 蒋励, 陈素和, 王玫, 杨可 1999 核电子学与探测技术 19 428]

    [15]

    Takeshi S, Tatsuo N, Keiji K, Hironobu U 1999 J. Nucl. Sci. Technol. 36 661

  • [1]

    Shi X M, Peng X J 2010 Nucl. Power Eng. 31 5 (in Chinese) [师学明, 彭先觉 2010 核动力工程 31 5]

    [2]

    Weale J W, Goodfellow H, McTaggart M H, Mullender M L 1961 J. Nucl. Energy 14 91

    [3]

    Haight R C, Lee J D, Maniscalco J A 1976 Nucl. Sci. Eng. 61 53

    [4]

    Akiyama M, Oka Y, Kanasugi K, Hashikura H, Kondo S 1987 Ann. Nucl. Energy 14 543

    [5]

    Wang D L, Chen S H, Kang W, You Y, Huang W D, Zhang X Y 1997 Atom. Energy Sci. Technol. 31 229 (in Chinese) [王大伦, 陈素和, 亢武, 游泳, 黄卫东, 张秀岩 1997 核能科学与工程 31 229]

    [6]

    ENDF/B-VI Decay Data, Joseph A C http: // t2. lanl. gov/data/ decayd. html [2011-05-20]

    [7]

    Rajput M U, MacMahon T D 1995 J. Radioanal. Nucl. Chem. 189 51

    [8]

    Quang E, Knoll G F 1992 Nucl. Sci. Eng. 110 282

    [9]

    Bergmann U C, Chawla R, Jatuff F, Murphy M F 2006 Nucl. Instrum. Meth. A 556 331

    [10]

    Koberl O, Seiler R, Chawla R 2004 Nucl. Sci. Eng. 146 1

    [11]

    Cullen D E, Hubbel J H, Kissel L 1997 UCRL -50400 6 1

    [12]

    Poenitz W P, Fawcett L R, Smith J, Smith D L 1981 Nucl. Sci. Eng. 78 239

    [13]

    Dilorio G J, Poenitz W P 1982 Nucl. Instrum. Meth. 198 461

    [14]

    Liu R, Lin L B, Wang D L, Li Y J, Jiang L, Chen S H, Wang M, Yang K 1999 Nucl. Electron. Detection Technol. 19 428 (in Chinese) [刘荣, 林理彬, 王大伦, 励义俊, 蒋励, 陈素和, 王玫, 杨可 1999 核电子学与探测技术 19 428]

    [15]

    Takeshi S, Tatsuo N, Keiji K, Hironobu U 1999 J. Nucl. Sci. Technol. 36 661

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  • Received Date:  05 July 2011
  • Accepted Date:  28 May 2012
  • Published Online:  20 May 2012

Measurement and analysis of neutron capture rate of U-238 in an alternate depleted uranium/polyethylene system

  • 1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China
Fund Project:  Project supported by the Chinese Special Project for ITER (Grant No. 2010GB111002).

Abstract: In order to check the conceptual design of subcritical reactor, an alternate depleted uranium/polyethylene-shell simulation device was established, to carry out uranium-238 neutron capture rate experiment using activation technique. The depleted uranium foils were activated at 90o to the incident. By measuring the 277.6 keV -ray emitted from 239Np generated by 238U (n, ) 239U reaction and correcting self-absorption of uranium experimentally, the 238U (n, ) reaction rate with an uncertainty between 3.5% and 3.7% and a total neutron capture of 2.24 0.09 of the system were obtained. The experiment was simulated using MCNP5 code with ENDF libraries. The simulations and measurements accord within 5% for the 238U (n, ) reaction rate and within 1% for the total neutron capture rate of 238U.

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