@article{cd5b5bb0793c4930b94f49fcdbf03658,
title = "57Zn β-delayed proton emission establishes the 56Ni rp-process waiting point bypass",
abstract = "We measured the Zn57 β-delayed proton (βp) and γ emission at the National Superconducting Cyclotron Laboratory. We find a Zn57 half-life of 43.6±0.2 ms, βp branching ratio of (84.7±1.4)%, and identify four transitions corresponding to the exotic β-γ-p decay mode, the second such identification in the fp-shell. The p/γ ratio was used to correct for isospin mixing while determining the Zn57 mass via the isobaric multiplet mass equation. Previously, it was uncertain as to whether the rp-process flow could bypass the textbook waiting point Ni56 for astrophysical conditions relevant to Type-I X-ray bursts. Our results definitively establish the existence of the Ni56 bypass, with 14-17% of the rp-process flow taking this route.",
keywords = "Type-1 X-ray bursts, Waiting-point, β-decay measurement of proton rich isotope",
author = "M. Saxena and {J Ong}, W. and Z. Meisel and Hoff, {D. E.M.} and N. Smirnova and Bender, {P. C.} and Burcher, {S. P.} and Carpenter, {M. P.} and Carroll, {J. J.} and A. Chester and Chiara, {C. J.} and R. Conaway and Copp, {P. A.} and Crider, {B. P.} and J. Derkin and A. Estrad{\'e} and G. Hamad and Harke, {J. T.} and R. Jain and H. Jayatissa and Liddick, {S. N.} and B. Longfellow and M. Mogannam and F. Montes and N. Nepal and Ogunbeku, {T. H.} and Richard, {A. L.} and H. Schatz and D. Soltesz and Subedi, {S. K.} and I. Sultana and Tamashiro, {A. S.} and V. Tripathi and Y. Xiao and R. Zink",
note = "Funding Information: This work was funded by the U.S. Department of Energy through Grants No. DE-FG02-88ER40387 , DE-SC0019042 , DE- NA0003909 and DE-SC0020451 ; the U.S. National Science Foundation through Grants No. PHY 1848177 (CAREER), PHY-1430152 (Joint Institute for Nuclear Astrophysics – Center for the Evolution of the Elements) and PHY-1913554 ; the U.S. National Nuclear Security Administration through Grant No. DOE-DE-NA0003906 , Nuclear Science and Security Consortium , under Award No. DE-NA0003180 and Argonne National Laboratory under the contract number DE-AC02-06CH11357 . A part of this work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 . This work was partially supported by the IN2P3/CNRS , France, under ENFIA project . Shell-model calculations have been performed at M{\'e}socentre de Calcul Intensif Aquitain (MCIA), University of Bordeaux. Funding Information: This work was funded by the U.S. Department of Energy through Grants No. DE-FG02-88ER40387, DE-SC0019042, DE- NA0003909 and DE-SC0020451; the U.S. National Science Foundation through Grants No. PHY 1848177 (CAREER), PHY-1430152 (Joint Institute for Nuclear Astrophysics ? Center for the Evolution of the Elements) and PHY-1913554; the U.S. National Nuclear Security Administration through Grant No. DOE-DE-NA0003906, Nuclear Science and Security Consortium, under Award No. DE-NA0003180 and Argonne National Laboratory under the contract number DE-AC02-06CH11357. A part of this work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. This work was partially supported by the IN2P3/CNRS, France, under ENFIA project. Shell-model calculations have been performed at M?socentre de Calcul Intensif Aquitain (MCIA), University of Bordeaux. Publisher Copyright: {\textcopyright} 2022 The Author(s)",
year = "2022",
month = jun,
day = "10",
doi = "10.1016/j.physletb.2022.137059",
language = "English",
volume = "829",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
}