The temperature dependence of positron trapping at voids in molybdenum has been carefully studied from 7 to 360 K. The trapping was studied before and after decorating the voids with hydrogen or nitrogen. The influence of positron-diffusion-limited trapping was extracted and found to be independent of void decoration, as expected. The voids were also studied by transmission electron microscopy and the results confirm that 4 pi rnD + is the correct term for describing the diffusion-limited trapping rate at spherical defects.
No takes yet. Share an insight, caveat, or question.
Bentzon et al. (1990) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: