‘Radionuclides’ appropriate for making neutron sources based on alpha-n reaction, other than those specified in 0C001 and 1C012.a., in the following forms: a. Elemental; b. Compounds having a total activity of 37 GBq/kg (1 Ci/kg) or greater; c. Mixtures having a total activity of 37 GBq/kg (1 Ci/kg) or greater; d. Products or devices containing any of the foregoing. Note: 1C236 does not control a product or device containing less than 3,7 GBq (100 millicuries) of activity. Technical Note: In 1C236 ‘radionuclides’ are any of the following: — Actinium-225 (Ac-225) — Actinium-227 (Ac-227) — Californium-253 (Cf-253) — Curium-240 (Cm-240) — Curium-241 (Cm-241) — Curium-242 (Cm-242) — Curium-243 (Cm-243) — Curium-244 (Cm-244) — Einsteinium-253 (Es-253) — Einsteinium-254 (Es-254) — Gadolinium-148 (Gd-148) — Plutonium-236 (Pu-236) — Plutonium-238 (Pu-238) — Polonium-208 (Po-208) — Polonium-209 (Po-209) — Polonium-210 (Po-210) — Radium-223 (Ra-223) — Thorium-227 (Th-227) — Thorium-228 (Th-228) — Uranium-230 (U-230) — Uranium-232 (U-232)

Alpha-emitting radionuclides

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