Accession Number : ADA187438


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


Corporate Author : DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)


Personal Author(s) : McGowan, S ; Gravelle, R A


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA187438


Report Date : Jun 1987


Pagination or Media Count : 20


Abstract : 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. Keywords: Thermoluminescence, Radiation dosimetry, Gamma, Proton, Alpha particle, Linear energy transfer, Canada.


Descriptors :   *ALPHA PARTICLES , *PROTONS , CANADA , DOSIMETERS , DOSIMETRY , EMBEDDING , ENERGY , ENERGY TRANSFER , FINE GRAINED MATERIALS , GAMMA RAYS , HYDROGEN , LINEARITY , NEUTRONS , PARTICLES , PHOSPHORS , POWDERS , RATIOS , RESPONSE , SENSITIVITY , THERMOLUMINESCENCE , CALCIUM COMPOUNDS


Subject Categories : Inorganic Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE