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DOE OSTI · 2419458

Precision half-life determination for the β + emitter N 13

Long, J.·Nicoloff, C. R.·Bardayan, D. W.·Becchetti, F. D.·Blankstein, D.·Boomershine, C.·Burdette, D. P.·Caprio, M. A.·Caves, L.·Fasano, P. J.·Frentz, B.·Henderson, S. L.·Kelly, J. M.·Kolata, J. J.·Liu, B.·O'Malley, P. D.·Strauss, S. Y.·Zite, R.·Brodeur, M.
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Abstract

A new precision half-life measurement of 13 N has been conducted using the TwinSol β-counting station at the University of Notre Dame. Here, the measured value of $t^{new}_{1/2}$ = 597.05(19) s differs from the previous world value by about 2.8σ. An evaluation of the 13N half-life results in a $t^{world}_{1/2}$ = 597.19(22) s. Updated Standard Model predictions for the Fermi to Gamow-Teller mixing ratio ρ and its associated correlation parameters have been calculated using the new 13 N world half life in preparation for a future measurement of the mixing ratio. Finally, an ab initio no-core configuration interaction (NCCI) calculation for the B(GT) of this decay, carried out using the Daejeon16 interaction, has been carried out, revealing the need for higher-order chiral corrections.

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Long, J., Nicoloff, C. R., Bardayan, D. W., Becchetti, F. D., Blankstein, D., Boomershine, C., Burdette, D. P., Caprio, M. A., Caves, L., Fasano, P. J., Frentz, B., Henderson, S. L., Kelly, J. M., Kolata, J. J., Liu, B., O'Malley, P. D., Strauss, S. Y., Zite, R., Brodeur, M.. 2022-10-19. Precision half-life determination for the β + emitter N 13. https://doi.org/10.1103/physrevc.106.045501

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