title: Measurements and Monte Carlo calculations of photon energy distributions in MAYAK PA workplaces.
abstract: Photon energy distributions were measured in different workplaces of the Mayak Production Association (MPA), which was the first plutonium production plant in the former Soviet Union. In situ gamma spectrometry measurements were performed with a portable germanium detector. The spectral stripping method is used for the conversion of the in situ gamma-ray spectra to photon fluence rate energy distribution. This method requires the simulation of the portable germanium detector, which has been performed based on the MCNP code of Los Alamos. Measured photon fluence rate energy distributions were compared with calculated photon energy distributions (with the MCNP code) in two different workplaces: in the first workplace the geometry exposure was known. On the contrary, in the second workplace, as in most workplaces of MPA, the exposure geometry was unknown. The results obtained from the comparison between the experimental and calculated photon fluence rate energy distributions are presented and discussed.
authors.affiliation: MAYAK PA, Lenin street 31, 456780 Ozyorsk, Russia.
authors.forename: M
authors.initials: M
authors.lastname: Smetanin
authors.forename: E
authors.initials: E
authors.lastname: Vasilenko
authors.forename: M
authors.initials: M
authors.lastname: Semenov
authors.forename: S
authors.initials: S
authors.lastname: Xanthos
authors.forename: G
authors.initials: G
authors.lastname: Takoudis
authors.forename: A
authors.initials: A
authors.lastname: Clouvas
authors.forename: J
authors.initials: J
authors.lastname: Silva
authors.forename: C
authors.initials: C
authors.lastname: Potiriadis
mesh_terms: D001822:Body Burden; D003198:Computer Simulation; D008954:Models, Biological; D009010:Monte Carlo Method; D009688:Nuclear Reactors; D054043:Nuclear Weapons; D016273:Occupational Exposure / Q000032:analysis*; D017785:Photons; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D012062:Relative Biological Effectiveness; D012426:Russia; D013051:Spectrometry, Gamma / Q000379:methods*