Thermoluminescence Response of CaF2:Mn, CaF2:Dy and CaSO4:Tm to Protons and Alpha-Particles,

摘要

Proton/gamma and alpha/gamma response ratios have been measured for very fine powders of the thermoluminescent phosphors CaF2:Mn, CaF2:Dy and CaSO4:Tm. This has been done as Part of an evaluation of these phosphors for use in a combined neutron/gamma thermoluminescent dosimeter which is made neutron sensitive by embedding the phosphor powder in an hydrogenous medium. The CaF2:Mn phosphor has been found to be marginally better than the other two for this purpose. Reduction in the measured proton/gamma response ratio with decreasing proton energy has been attributed primarily to relatively low response near the surfaces of the phosphor particles.