An odd-mass actinide nuclide decays by emission to two levels of its daughter

PHYSICS · Subjective · Fermi University Physics · Nuclear Physics · Radioactivity and decay modes · Radioactivity and decay modes

The Nucleus Resolved, Ch Decay rates from the golden rule: kinetics closed and alpha decay finished

Problem

An odd-mass actinide nuclide decays by α\alpha emission to two levels of its daughter. Branch A, to the level that keeps the odd nucleon in the same deformed orbital as the parent, has intensity IA=80%I_A = 80\% and a computed WKB penetrability PAP_A. Branch B, to a level that requires the odd nucleon to change orbital, has intensity IB=0.80%I_B = 0.80\% and a computed penetrability PB=3.0 PAP_B = 3.0\,P_A (the larger QαQ_\alpha of this branch gives it a larger penetrability). Assume the two branches would have equal preformation factors if there were no change of configuration. Find the hindrance factor of branch B relative to the systematics set by branch A.

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