8.7 The decay 236Th (0+) — 233Ra (0+) +a has a Q-value of 6.451 MeV and a half-life of 30.57 min. If the frequency and p

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8 7 The Decay 236th 0 233ra 0 A Has A Q Value Of 6 451 Mev And A Half Life Of 30 57 Min If The Frequency And P 1 (66.26 KiB) Viewed 81 times

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8.7 The decay 236Th (0+) — 233Ra (0+) +a has a Q-value of 6.451 MeV and a half-life of 30.57 min. If the frequency and probability of forming alpha particles (see (8.53)) for this decay are the same as those for the decay 238Th (0+) → 234Ra (0+)+a, estimate the half-life for the a decay of 228Th, given that its Q-value is 5.520 MeV. 90 → 88 90 29