title: Efficiency of Pm-147 direct charge radioisotope battery.
abstract: A theoretical analysis is presented here of the efficiency of direct charge radioisotope batteries based on the efficiency of the radioactive source, the system geometry, electrostatic repulsion of beta particles from the collector, the secondary electron emission, and backscattered beta particles from the collector. Efficiency of various design batteries using Pm-147 sources was experimentally measured and found to be in good agreement with calculations. The present approach can be used for predicting the efficiency for different designs of direct charge radioisotope batteries.
authors.affiliation: TRACE Photonics Inc., 1680 West Polk Avenue, Charleston, IL 61920, USA.
authors.forename: A
authors.initials: A
authors.lastname: Kavetskiy
authors.forename: G
authors.initials: G
authors.lastname: Yakubova
authors.forename: S M
authors.initials: SM
authors.lastname: Yousaf
authors.forename: K
authors.initials: K
authors.lastname: Bower
authors.forename: J D
authors.initials: JD
authors.lastname: Robertson
authors.forename: A
authors.initials: A
authors.lastname: Garnov
mesh_terms: D001610:Beta Particles; D011211:Electric Power Supplies; D011399:Promethium
chemical_list: D011399:Promethium