The specific alpha-activity of U-234 has been determined using pure samples grown from UX. The half-life period was found to be 2.67±{}0.04 (L. E.)×{}10⁵ yr. The corresponding abundance in natural uranium is 0.0000580±{}0.0000008 by weight in fair agreement with determinations by other methods.
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Goldin et al. (1949) studied this question.
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