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Laser-processed three dimensional graphitic electrodes for diamond radiation detectors

Benoît Caylar 1 Michal Pomorski 1 Philippe Bergonzo 1
1 LCD-LIST - Laboratoire Capteurs Diamant
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
Abstract : We have used an original approach for diamond detectors where three dimensional buried graphitic electrodes are processed in the bulk of a diamond substrate via laser-induced graphitization. Prototype made of polycrystalline chemical vapor deposition diamond was fabricated using a nanosecond UV laser. Its charge collection efficiency was evaluated using a-particles emitted by a 241-Americium source. An improved charge collection efficiency was measured proving that laser micro-machining of diamond is a valid option for the future fabrication of three dimensional diamond detectors
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Benoît Caylar, Michal Pomorski, Philippe Bergonzo. Laser-processed three dimensional graphitic electrodes for diamond radiation detectors. Applied Physics Letters, American Institute of Physics, 2013, 103, pp.043504. ⟨10.1063/1.4816328⟩. ⟨cea-01791926⟩



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