Photon interaction parameters of some spin ice compound materials
by Vishwanath P. Singh; N.M. Badiger
International Journal of Nuclear Energy Science and Technology (IJNEST), Vol. 7, No. 1, 2012

Abstract: Spin ice compounds (SICs) are the frustrated magnetic materials which are used in nuclear reactor control system and semiconductor electronic circuits. Photon interaction parameters such as the effective atomic number, Z_eff, and the effective electron density, N_eff, for SICs such as Dy₂Ti₂O₇, Dy₂Sn₂O₇, Ho₂Ti₂O₇ and Ho₂Sn₂O₇ have been computed at photon energies from 10 keV to 100 GeV. The Z_eff of the spin ice compounds is approximately constant in energy range 0.3–4 MeV where Compton scattering is the main photon interaction process. The Z_eff increases sharply below 0.3 MeV due to photoelectric absorption process and above 3 MeV due to pair-production process. The well type structures of Z_eff and N_eff for HSO and DSO have been observed in the photon energy range 30-60 keV due to involvement of k-shell electron in the interaction. Dy₂Sn₂O₇ and Ho₂Sn₂O₇ are suitable materials for gamma shielding.

Online publication date: Fri, 05-Dec-2014

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