A therapeutic radiation source includes a optically heated thermionic cathode that is shaped so as to maximize the coupling efficiency of the incident optical radiation to the thermionic cathode. A fiber optic cable directs a beam of radiation, having a power level sufficient to heat at east a portion...http://www.google.fr/patents/US6480573?utm_source=gb-gplus-shareBrevet US6480573 - Therapeutic radiation source with increased cathode efficiency
Therapeutic radiation source with increased cathode efficiency
