Development of a Polycarbonate Fast Neutron Dosimeter and Comparison With the Conventional Emulsion Dosimeter

Abstract

The practical application of a polycarbonate as a dosimeter for high energy neutrons is presented. The efficiency of this dosimeter in the energy range of 1-14 MeV was measured with monoenergetic neutrons produced by the 'Li(p, n) 'Be and t(d, n) 4He reactions and with neutrons from 25ZCf and Z39P~-Be sources.The electrochemical etching technique for enlarging the damage sites produced by the neutrons, the background of unirradiated polycarbonate foils and the dose thresholds for various energies were investigated. The replacement of the conventional emulsion dosimeter by the polycarbonate dosimeter in the Israel National Badge Service is described.

Projeto, construção e caracterização de um dosímetro para radiação de nêutrons

“…As emulsões fotográficas foram os primeiros dosímetros individuais para nêutrons, na década de 1950, quando Cheka (1954) (Eisen et al, 1980).…”

“…Relacionando (8) e (9): (Piesch, 1977) estão esquematizados os principais dosímetros que foram desenvolvidos. (Eisen et al, 1980(Eisen et al, , 1981 (Fantuzzi et al, 2002;Mariotti et al, 2003) e calibração e performance do dosímetro (Morelli et al, 1999). Nos últimos anos o…”