Promethium-147 capacitor

Authors :: Kavetskiy, A.
Yakubova, G.
Lin, Q.
Chan, D.
Yousaf, S.M.
Bower, K.
Robertson, J.D.
Garnov, A.
Meier, D.
Source :: Applied Radiation & Isotopes. Jun2009, Vol. 67 Issue 6, p1057-1062. 6p.
Publication Year :: 2009
Abstract: Abstract: Beta particle surface fluxes for tritium, Ni-63, Pm-147, and Sr-90 sources were calculated in this work. High current density was experimentally achieved from Pm-147 oxide in silica–titana glass. A 96GBq (2.6Ci) Pm-147 4π-source with flux efficiency greater than 50% was used for constructing a direct charge capacitor with a polyimide coated collector and vacuum as electrical insulation. The capacitor connected to high resistance (TΩ) loads produced up to 35kV. Overall conversion efficiency was over 10% (on optimal load). [Copyright &y& Elsevier]