▎ 摘　　要

NOVELTY - 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. USE - Chemistry. ADVANTAGE - 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