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Information Journal Paper

Title

EXPERIMENTAL AND MONTE CARLO STUDIES ON THE RESPONSE OF CR-39 DETECTORS TO AM-BE NEUTRON SPECTRUM

Pages

  95-102

Abstract

 Background: The Poly-Allyl Diglycol Carbonate (PADC) detector is of particular interest for development of a fast neutron dosimeter. Fast neutrons interact with the constituents of the CR-39 detector and produce H, C and O recoils, as well as (n, a) reaction. These neutron- induced charged particles contribute towards the response of CR-39 detectors.Material and Methods: ELECTROCHEMICAL ETCHING was used to enlarge track diameter which was made by low energy recoil protons. Before ELECTROCHEMICAL ETCHING, a chemical etching was performed for 1 hour. The responses were also calculated by Monte Carlo SIMULATIONs, using MCNPX code in different energy bins considering H, C and O recoils. The total registered efficiency and partial contributions of the efficiency, due to interactions with each constituent of CR-39, were calculated.Results: The optimized condition of etchant was obtained to be 6N KOH 15kV.cm-1, and 6 hours etching time. The obtained results show that track efficiency of CR-39 was a function of incident neutron energy. The tracks caused by O and C recoil nuclei were negligible for neutron energies lower than 1 MeV. At neutron energies lower than 1 MeV, only recoil protons would have sufficient energy to leave visible tracks. But, O and C recoils had important contributions in overall response of PADC at neutron energies of few MeV.Conclusion: The efficiency of a CR-39 based dosemeter could be calculated by MCNPX code and the results were in a good agreement with experimental results in energy range of 241Am– Be bare source and 241Am- Be was softened with a spherical polyethylene moderator of radius of 20 cm.

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    APA: Copy

    DEEVBAND, M.R., ABDOLMALEKI, P., KARDAN, M.R., KHOSRAVI, H.R., TAHERI, M., NAZERI, F., & AHMADI, N.. (2011). EXPERIMENTAL AND MONTE CARLO STUDIES ON THE RESPONSE OF CR-39 DETECTORS TO AM-BE NEUTRON SPECTRUM. INTERNATIONAL JOURNAL OF RADIATION RESEARCH, 9(2), 95-102. SID. https://sid.ir/paper/286536/en

    Vancouver: Copy

    DEEVBAND M.R., ABDOLMALEKI P., KARDAN M.R., KHOSRAVI H.R., TAHERI M., NAZERI F., AHMADI N.. EXPERIMENTAL AND MONTE CARLO STUDIES ON THE RESPONSE OF CR-39 DETECTORS TO AM-BE NEUTRON SPECTRUM. INTERNATIONAL JOURNAL OF RADIATION RESEARCH[Internet]. 2011;9(2):95-102. Available from: https://sid.ir/paper/286536/en

    IEEE: Copy

    M.R. DEEVBAND, P. ABDOLMALEKI, M.R. KARDAN, H.R. KHOSRAVI, M. TAHERI, F. NAZERI, and N. AHMADI, “EXPERIMENTAL AND MONTE CARLO STUDIES ON THE RESPONSE OF CR-39 DETECTORS TO AM-BE NEUTRON SPECTRUM,” INTERNATIONAL JOURNAL OF RADIATION RESEARCH, vol. 9, no. 2, pp. 95–102, 2011, [Online]. Available: https://sid.ir/paper/286536/en

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