A Deconvolution of Gamma-Ray Spectra for Accurate Attenuation Studies

  • Sangam N. N et.al
Keywords: Gamma ray, NaI(Tl) detector, deconvolution, mass attenuation coefficient.

Abstract

The peak fitting of gamma-ray spectra for estimating net/gross counting is complex because of the selection of interested full energy peak folded by Compton scattering peak and others. Therefore it is necessary to unfold the spectra by deconvolution using Maximum likelihood expectation maximization (ML-EM) method for accurate attenuation measurements in the range 356 keV - 1330 keV for NaI(Tl) gamma ray detector. The histogram data must have an accurate Guassian distribution of photon attenuated by scintillation material and coupled photomultiplier device which depends on response function of detector. The Monte Carlo simulation gives poor resolution. The Deconvolution using (ML-EM) has meets the ideal counting statistics of gamma rays of mono-energetic photons and validate by  comparison of mass attenuation coefficients of aluminium absorber for given energies. The measured experimental values by using ML-EM simulation with theoretically reported values by Hubble and Seltzer1 are in good agreement.

Author Biography

Sangam N. N et.al

Sangam N. Na. A. H. Deshpandeb  C.S. Mahajanc, Pravina P.Paward

aDepartment of Applied Science, Government Polytechnic, Jalna, Maharashtra 431203, India

bDeogiri Institute of Engineering & Management Studies, Aurangabad.

cDepartment of Physics, R.G. Bagdia Arts, S. B. Lakhotia Commerce and R. Bezonji Science College,Jalna, Maharashtra 431203, India.

dDepartment of Physics, Dr. Babasaheb Ambedkar Marathwada university, Aurangabad

Correspondence: Government Polytechnic, Jalna.

E-mail address: naresh.sangam7@gov.in

Published
2024-02-04
Issue
Vol 2 No 4 (2019)
Section
Regular Issue

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