Promethium-147 capacitor.
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 96 GBq (2.6 Ci) Pm-147 4pi-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 (TOmega) loads produced up to 35 kV. Overall conversion efficiency was over 10% (on optimal load).
Kavetskiy
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TRACE Photonics Inc., 1680 West Polk Avenue, Charleston, Illinois 61920, USA.
Yakubova
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Lin
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Chan
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D
Yousaf
S M
SM
Bower
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K
Robertson
J D
JD
Garnov
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Meier
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