Experimental and simulated validation of the energy dependence of saturation thickness of multiple scattered gamma rays
Tóm tắt
Saturation thickness for multiple scattering gamma rays from multiple sources has been measured experimentally and simulated using the Monte Carlo N-Particle (MCNP) Code. Experimental measurements were performed using a collimated beam of gamma-rays from 57Co, 203Hg, 133Ba, 22Na, 137Cs, 65Zn and 60Co sources. The gamma rays were directed at rectangular aluminium targets of varying thickness. A NaI (Tl) scintillation detector placed at a backscattering angle of 180° was used to detect the scattered photons. The measured and calculated saturation thickness increases with increasing energy of incident gamma-rays. Experimental and simulated values are compared and are in good agreement.
Tài liệu tham khảo
E. Hayward, J. Hubbell, J. Appl. Phys., 25, 506 (1954)
D. B. Pozdneyev, J. Nucl. Energy, 21, 197 (1967)
A. K. Sinha, A. Bhattacharjee, Pramana, 33, 493 (1989)
L. Paramesh, P. Venkataramaih, K. Gopala, H. Sanjeevaih, Nucl. Instruments Methods, 206, 327 (1983)
T. Pitkanen, T D. Laundy, R. S. Holt, M. J. Cooper, Nucl. Instruments Methods, 251, 536 (1986).
M. Singh, G. Singh, B. Singh, B. S. Sandhu, Radiat. Phys. Chem., 77, 991 (2008)
K. U. Kiran, K. Ravindraswami, K. M. Eshwarappa, H. M. Somashekarappa, Radiat. Phys. Chem., 97, 107 (2014)
T. Pitkanen, M. J. Cooper, D. Laundry, R. S. Holt, Nucl. Instuments Methods Phys. Res. A, 1987, 257, 384 (1987)
A. D. Sabharwal, M. Singh, B. Singh, B. S. Sandhu, Appl. Radiat. Isot., 66, 1467 (2008)
M. J. Berger, J. H. Hubbell, XCOM: photon crosssections on a personal computer, 1987, NBSIR-87, 3597 (1987)
C. E. Crouthamel, Applied Gamma Ray Spectrometry, Second edition, (Pergamon Press, Oxford, 1970)
Manpreeth Singh, Gurvinderjit Singh, B. S. Sandhu, Bhajan Singh, Radiat. Meas., 42, 420 (2007)
Manpreeth Singh, Gurvinderjit Singh, B. S. Sandhu, Bhajan Singh, Appl. Radiat. Isot., 64, 373 (2006)
Gurvinderjit Singh, Manpreet Singh, B. S. Sandhu, Bhajan Singh, Appl. Radiat. Isot., 66, 1151 (2008)
J. F. Briesmeister, MCNP a general purpose Monte Carlo N-Particle transport code, Version 4A, Los Alamos National Laboratory report, LA-12625 (1993)