<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>β</mml:mi></mml:math>-decay study of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Kr</mml:mi><mml:mprescripts /><mml:none /><mml:mn>94</mml:mn></mml:mmultiscripts></mml:math>

Miernik, K.; Rykaczewski, K. P.; Grzywacz, R.; Gross, C. J.; Madurga, M.; Miller, David T.; Stracener, D. W.; Batchelder, J. C.; Brewer, N. T.; Cartegni, L.; Fijałkowska, A.; Karny, M.; Korgul, A.; Królas, W.; Mazzocchi, C.; Mendez, A. J.; Padgett, S.; Paulauskas, S. V.; Winger, J. A.; Wolińska-Cichocka, M.; Zganjar, E. F.

doi:10.1103/physrevc.94.024305

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…The past few years has seen a dramatic increase in the quantity and quality of experimental data for neutron-rich nuclei important for the r process, e.g., [76,77,78,79,80,81,82,83,84,85,54,86,87,88,89,90,25,91,92,93,94,56]. Future measurement campaigns at current and planned experimental facilities such as the Facility for Rare Isotope Beams, will offer an unprecedented access to the production of short-lived isotopes [95].…”

Section: Discussionmentioning

confidence: 99%

Reverse engineering nuclear properties from rare earth abundances in therprocess

Mumpower

McLaughlin

Surman

et al. 2017

J. Phys. G: Nucl. Part. Phys.

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Abstract. The bulk of the rare earth elements are believed to be synthesized in the rapid neutron capture process or r process of nucleosynthesis. The solar r-process residuals show a small peak in the rare earths around A ∼ 160, which is proposed to be formed dynamically during the end phase of the r process by a pileup of material. This abundance feature is of particular importance as it is sensitive to both the nuclear physics inputs and the astrophysical conditions of the main r process. We explore the formation of the rare earth peak from the perspective of an inverse problem, using Monte Carlo studies of nuclear masses to investigate the unknown nuclear properties required to best match rare earth abundance sector of the solar isotopic residuals. When nuclear masses are changed, we recalculate the relevant β-decay properties and neutron capture rates in the rare earth region. The feedback provided by this observational constraint allows for the reverse engineering of nuclear properties far from stability where no experimental information exists. We investigate a range of astrophysical conditions with this method and show how these lead to different predictions in the nuclear properties influential to the formation of the rare earth peak. We conclude that targeted experimental campaigns in this region will help to resolve the type of conditions responsible for the production of the rare earth nuclei, and will provide new insights into the longstanding problem of the astrophysical site(s) of the r process. arXiv:1609.09858v1 [nucl-th] 30 Sep 2016Reverse engineering nuclear properties from rare earth abundances in the r process 2

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Section: Discussionmentioning

confidence: 99%

Reverse engineering nuclear properties from rare earth abundances in therprocess

Mumpower

McLaughlin

Surman

et al. 2017

J. Phys. G: Nucl. Part. Phys.

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“…The delayed neutron branching ratios P ni are referred from JENDL/FPD-2011 [20] with some corrections reflecting new experimental data [27][28][29][30][31][32][33][34][35], which were obtained after the release of JENDL/FPD-2011.…”

Section: Calculation a Fission Product Yieldsmentioning

confidence: 99%

Neutron energy dependence of delayed neutron yields and its assessments

Minato

2018

Journal of Nuclear Science and Technology

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Incident neutron energy dependence of delayed neutron yields of uranium and plutonium isotopes is investigated. A summation calculation of decay and fission yield data is employed, and the energy dependence of the latter part is considered in a phenomenological way. Our calculation systematically reproduces the energy dependence of delayed neutron yields by introducing an energy dependence of the most probable charge and the odd-even effect. The calculated fission yields are assessed by comparison with JENDL/FPY-2011, delayed neutron activities, and decay heats. Although the fission yields in this work are optimized to delayed neutron yields, the calculated decay heats are in good agreement with the experimental data. Comparison of the fission yields calculated in this work and JENDL/FPY-2011 gave an important insight for the evaluation of the next JENDL nuclear data.

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