1C236'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:
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Actinium-225 (225Ac)
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Actinium-227 (227Ac)
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Californium-253 (253Cf)
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Curium-240 (240Cm)
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Curium-241 (241Cm)
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Curium-242 (242Cm)
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Curium-243 (243Cm)
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Curium-244 (244Cm)
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Einsteinium-253 (253Es)
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Einsteinium-254 (254Es)
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Gadolinium-148 (148Gd)
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Plutonium-236 (236Pu)
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Plutonium-238 (238Pu)
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Polonium-208 ( 208Po)
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Polonium-209 (209Po)
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Polonium-210 (210Po)
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Radium-223 (223Ra)
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Thorium-227 (227Th)
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Thorium-228 (228Th)
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Uranium-230 (230U)
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Uranium-232 (232U)