Thermoluminescent internal beta-ray dosimetry.

摘要: The possibility of using thermoluminescence for in vivo and vitro direct dose measurements tiny body cavities (for example, bone marrow) suggested investigation the response to beta radiation LiF CaF2 powder single crystals different thicknesses (down microns). Several beta-ray sources were made form gelatin or polyester resin molds. emitters consisted ${}^{3}{\rm H},{}^{63}{\rm Ni},{}^{35}{\rm S},{}^{45}{\rm Ca},{}^{204}{\rm Tl}$ , ${}^{90}{\rm Sr}({}^{90}{\rm Y})$ absorbed rate was computed from known concentration each case. As expected, thermoluminescent output per unit weight essentially same ${}^{204}{\rm ${}^{60}{\rm Sr}$ as for60 Co but dropped lower-energy emitters. Among factors considered which might account drop light (1) relation ...