METHOD OF OBTAINING GRAPHENE CELLS IN GRAPHITE WITH ADDITION OF RADIOACTIVE ISOTOPES Russian patent published in 2013 - IPC C01B31/04 B82B3/00 G21G1/02 

FIELD: chemistry.

SUBSTANCE: invention relates to inorganic materials science and methods of producing beta-ray emitting materials based on oriented pyrolytic graphite. The process of intercalating a tritium additive into oriented graphite with thermal-neutron capture cross-section of about (4.5-6.0)10^-3 barn is carried out in two consecutive steps. At the first step, graphite and a natural mixture of lithium isotopes are placed in a vacuum chamber, the graphite itself being placed between two electrically insulated plates whose C axis lies perpendicular to the surface of the plates. In the vacuum conditions, the graphite and the natural mixture of lithium isotopes are simultaneously heated to obtain intercalated compounds with a graphite composition of LiC₆ or LiC₁₂, which are placed in the reactor core and at room temperature are irradiated with a neutron flux of about 10¹⁴ cm^-2 s^-1 until full tritium isotope uptake as a result of a nuclear reaction.

EFFECT: invention enables to obtain graphene cells oriented in pyrolytic graphite with tritium additives in pure form or in form of lithium and tritium compounds.

7 cl, 2 dwg