title: Determination of 4.438 MeV gamma-ray to neutron emission ratio from a (241)Am-(9)Be neutron source.
abstract: Gamma-ray (gamma-ray) spectra of a 1.49 x 10(11)Bq (241)Am-(9)Be source and background were measured using a 2 in x 2 in, NaI(Tl) detector. Backgrounds due to the neutron interactions and energy deposition were calculated with MCNP4C. By subtracting the backgrounds from the experimental spectra, the S(gamma) is obtained and the R=S(gamma)/S(n) was estimated. The final result of R=S(gamma)/S(n)=0.596 is in agreement with result reported in literature.
authors.affiliation: Physics Department, School of Sciences, Ferdowsi University of Mashhad, P.O. Box 91775-1436, Mashhad, Iran. amowlavi@science1.um.ac.ir
authors.forename: Ali Asghar
authors.initials: AA
authors.lastname: Mowlavi
authors.forename: Rahim
authors.initials: R
authors.lastname: Koohi-Fayegh