title: An improved Compton scattering method for determination of concentration of solutions.
abstract: An improved Compton scattering method for determination of concentration of low-Z solutions is presented. The Monte Carlo (MC) numerical simulation of the scattering phenomena is done using the MCNP code. A unique non-linear extrapolation method is followed in correcting the scattered intensity for self-absorption and multiple scattering. The density ratios obtained using non linear extrapolated scattered intensity values are free from self-absorption and multiple scattering and agree well with the standard ones within experimental errors. The sensitivity study of transmission and scattering methods for determination of concentration of solutions having closer attenuation parameters at 661.6 keV is carried out to predict the range of effectiveness and suitability of these methods. The slopes (sensitivity/unit concentration) of the curves obtained from scattering method are higher by a factor of 1.26 compared to those of the transmission method in the measured range of concentrations.
authors.affiliation: Radiological Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamilnadu, India. priyada@igcar.gov.in
authors.forename: P
authors.initials: P
authors.lastname: Priyada
authors.forename: R
authors.initials: R
authors.lastname: Ramar
authors.lastname: Shivaramu