Method to produce light-emitting nano-particles of diamond
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United States of America Patent
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Jan 13, 2015
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Aug 30, 2013
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May 10, 2007
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Abstract
Method to produce diamonds containing Nitrogen-Vacancy centers from diamonds grown by a high pressure and high temperature process and containing isolated substitutional nitrogen, comprising: —Irradiating (12) said diamonds by an electron beam such that the irradiation dose is comprised between 1017 and 1019 electrons per square centimeter; —annealing (14) the irradiated diamonds in vacuum or in a inert atmosphere at a temperature above 700° C. and for at least 1 hour; characterized in that said electron beam has an acceleration energy above 7 MeV.
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