| CPC G21H 1/00 (2013.01) [G21H 1/02 (2013.01); G21H 1/04 (2013.01)] | 19 Claims |

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1. A device comprising:
a radioactive source that emits charged particle radiation;
ion-producing media positioned adjacent to the radioactive source, wherein the ion-producing media comprises a material that includes carbon and releases ions in response to exposure to the charged particle radiation; and
a set of two or more electrodes configured to:
capture ions released by the ion-producing media in response to exposure to the charged particle radiation emitted by the radioactive source; and
generate electric current from the captured ions.
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