Journal of Nuclear Science, Engineering and Technology (JONSAT)
In cooperation with the Iranian Nuclear Society

Neutron-Gamma Discrimination in Mixed Field by PSD

Document Type : Research Paper

Authors

A Sharghi Ido
M Shahriari
G.R Etaati
Abstract
In this study, a pulse shape discriminator (PSD), incorporating zero-crossing method has been developed. The separate measurements with 241Am-Be and 252Cf sources undertaken by BC501A liquid have shown that the purposed and the common-used PSD’s are in good agreement. The improved characteristics of the presented PSD are FOM=1.36 at a threshold of 60keVee and 1.5µsec dead time which allows the count rates up to 50kHz.

Highlights

  1. 1.    G.F. Knoll, “Radiation detection and measurement,” John Wiley & Sons, New York, 3rd Ed (2000).

 

  1. 2.    P. Sperr, H. Spieler, M.R. Maier, D. Evers, “A Simple Pulse-Shape Discrimination Circuit,” Nuclear Instruments and Methods; No. 116, 55-59 (1974).

 

  1. 3.    H.H. Knox and T.G. Miller, “Technique for determining bias setting for organic scintilators,” Nuclear Instruments and Methods; No. 3, 519-25 (1972).

 

  1. 4.    J.K. Dickensons, “A monte carlo based computer program to determine a scintillator full energy response to neutron detection for en between 0.1 and 80MeV,” ORNL (1988).

 

  1. 5.    W.R. Burrus and R.M. Freestone, “A response matrix generation code package,” Oak Ridge National Laboratory ORNL-TM-2594 (1969).

 

  1. 6.    R.H. Johnson, “A user's manual for COOLC and FORIST,” Radiation Shielding Information Centre PNE-75-107 (1975).

 

  1. 7.    D. Wolski, “Comparison of n-γ discrimination by zero-crossing and digital charge comparison methods,” Nuclear Instruments and Methods; No. 360, 584-592 (1995).

 

  1. 8.    E.A. Lorch, “Neutron spectra of 241AmB, 241AmBe, 241AmF, 242CmBe, 238PuC and 252Cf Isotopic Neutron Sources,” International Journal of Applied Radiation and Isotopes, No. 24, 585-591 (1973).

 

  1. 9.    S. Green, “A compendium of manuals and papers,” EMRA NPL 82/0462 (1991).

 

  1. 10.              R. Koohi-Fayegh, S. Green, M.G. Scott, “A comparison of neutron spectrum unfolding codes used with a miniature NE213 detector,” Nuclear Instruments and Methods, No. 460. 391-400 (2001).

 

Keywords

Pulse Shape Discriminator (PSD)
241Am-Be and 252Cf Sources
Neutron Spectrum Unfolding
Zero-Crossing Method
  1. 1.    G.F. Knoll, “Radiation detection and measurement,” John Wiley & Sons, New York, 3rd Ed (2000).

 

  1. 2.    P. Sperr, H. Spieler, M.R. Maier, D. Evers, “A Simple Pulse-Shape Discrimination Circuit,” Nuclear Instruments and Methods; No. 116, 55-59 (1974).

 

  1. 3.    H.H. Knox and T.G. Miller, “Technique for determining bias setting for organic scintilators,” Nuclear Instruments and Methods; No. 3, 519-25 (1972).

 

  1. 4.    J.K. Dickensons, “A monte carlo based computer program to determine a scintillator full energy response to neutron detection for en between 0.1 and 80MeV,” ORNL (1988).

 

  1. 5.    W.R. Burrus and R.M. Freestone, “A response matrix generation code package,” Oak Ridge National Laboratory ORNL-TM-2594 (1969).

 

  1. 6.    R.H. Johnson, “A user's manual for COOLC and FORIST,” Radiation Shielding Information Centre PNE-75-107 (1975).

 

  1. 7.    D. Wolski, “Comparison of n-γ discrimination by zero-crossing and digital charge comparison methods,” Nuclear Instruments and Methods; No. 360, 584-592 (1995).

 

  1. 8.    E.A. Lorch, “Neutron spectra of 241AmB, 241AmBe, 241AmF, 242CmBe, 238PuC and 252Cf Isotopic Neutron Sources,” International Journal of Applied Radiation and Isotopes, No. 24, 585-591 (1973).

 

  1. 9.    S. Green, “A compendium of manuals and papers,” EMRA NPL 82/0462 (1991).

 

  1. 10.              R. Koohi-Fayegh, S. Green, M.G. Scott, “A comparison of neutron spectrum unfolding codes used with a miniature NE213 detector,” Nuclear Instruments and Methods, No. 460. 391-400 (2001).

 

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