Accession Number : AD0286024

Title :   A NUCLEAR-PHOTON ENERGY CONVERSION STUDY

Corporate Author : IIT RESEARCH INST CHICAGO ILL

Personal Author(s) : WATTS,H.V. ; NUDELMAN,S.

Report Date : 09 OCT 1962

Pagination or Media Count : 1

Abstract : The characteristics of silicon p-n junction photovoltaic cells were experimentally studied to determine their opera ional properties for use in nuclear-photon energy conversion system. Beta particles from a radioisotope source are absorbed by a luminescent material which emits a multiplicit of low energy photons. These photons are converted to electrical energy by a photovoltaic device. Gamma radiation from Co-60 produced a significant efficiency loss above 100,000 roentgens. The silicon cell efficiency was observed to decrease nearly linearly with increased temperature in the range of 25 to 180 C at a rate of about 0.65% per degree centigrade. A marked efficiency decrease at low illumination intensities, hich is expected from the beta excited phosphor, was observed for the silicon cell tested. (Author)

Descriptors :   *BETA PARTICLES, *GAMMA RAYS, *PHOSPHORESCENT MATERIALS, *PHOTOELECTRIC CELLS (SEMICONDUCTOR), *PHOTONS, *PHOTOTUBES, *RADIOACTIVE ISOTOPES, *SILICON, ENERGY CONVERSION

Distribution Statement : APPROVED FOR PUBLIC RELEASE