Empirical formula for β
                            −-decay half-lives of r-process nuclei

Zhou, Yong; Li, Zhihong; Wang, Youbao; Yong-Shou, Chen; Su, J.; Li, Yunju; Yan, S. Q.; Li, XinYue; Han, Zhiyu; Shen, Y. P.; Lin, Ge; Zeng, Sheng; Liu, Gang; Liu, Weiping

doi:10.1007/s11433-017-9045-0

Cited by 18 publications

(31 citation statements)

References 23 publications

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“…A. The employed formula for the β decay half-lives Recently, with corrections to both pairing and shell effects, Zhou et al [55] proposed a formula to calculate the β − -decay half-lives of the neutron-rich nuclei far from the stability line,…”

Section: The Theoretical Methodsmentioning

confidence: 99%

“…In this subsection, four different mass tables, i.e., the FRDM model [22], the latest version of WS (WS4) model [23], the recent version of the HFB model (HFB-31) [61], and the RMF model with TMA effective interaction [25], are considered to demonstrate the predictive ability of the systematic formula [55]. The model deviation of binding energy B with respect to the experimental data can be characterized by the rms…”

Section: A the Reliability Of The Systematic Formulamentioning

confidence: 99%

“…Recently, Zhang et al [54] presented a new exponential law for calculating β-decay half-lives of nuclei far from the stability line. In 2017, Zhou et al [55] proposed an empirical formula for β-decay half-lives via investigating systematically the variation of β-decay half-lives with the decay energy Q and nucleon number (Z, N ) based on experimental data. Here both shell and pairing effects on β-decay half-lives versus the nucleon number (Z, N ) are taken into account.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of the nuclear mass uncertainties on the r process

Wang

Wen

Heng

2019

Int. J. Mod. Phys. E

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Based on a simple site-independent approach, we attempt to reproduce the solar r-process abundance with four nuclear mass models, and investigate the impact of the nuclear mass uncertainties on the r process. In this paper, we first analyze the reliability of an adopted empirical formula for β-decay half-lives which is a key ingredient for the r process. Then we apply four different mass tables to study the r-process nucleosynthesis together with the calculated β-decay half-lives, and the existing β-decay data from FRDM+QRPA is also considered for comparison. The numerical results show that the main features of the solar r-process pattern and the locations of the abundance peaks can be reproduced well via the r-process simulations. Moreover, we also find that the mass uncertainties can significantly affect the derived astrophysical conditions for the r-process site, and resulting in a remarkable impact on the r process.

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Section: The Theoretical Methodsmentioning

confidence: 99%

Section: A the Reliability Of The Systematic Formulamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of the nuclear mass uncertainties on the r process

Wang

Wen

Heng

2019

Int. J. Mod. Phys. E

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“…where α is the fine structrue constant with 1/137. The correction factor S(N, Z) will take the labels (e.g., Zhou & Li et al 2017)…”

Section: The Beta Decay In No Sesmentioning

confidence: 99%

“…( 4), the shell and pairing effect on the nuclear matrix elements, which reflect the main information of the nuclear structure. The factor δ is well described by δ = (−1) N + (−1) Z (zhou & Li et al 2017).…”

Section: The Beta Decay In No Sesmentioning

confidence: 99%

Supernova β^- decay of nuclides 53Fe, 54Fe, 55Fe, and 56Fe in strongly screened plasma

Liu,

Liu

2017

Preprint

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The electron screening strong effect on the electron energy and threshold energy of the beta decay reaction. in this paper, we study the β − decay rates of some iron isotopes. The electron screening beta decay rates increase by about two orders of magnitude. The strong screening beta decay rates due to Q-value correction are by more than one order of magnitude higher than those of without Q-value correction.

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Supernova antineutrino energy losses of ⁵⁹Co, ⁵⁶Co, ⁵⁶Ni, and ⁵⁶Fe by β⁻‐decay in strongly screened plasma

Liu

2020

Astron Nachr

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Based on the shell and pair effects and the decay energy, we investigate the comparative half-lives of − -decay for some iron group nuclei and mainly discuss the electron energy, beta decay threshold energy, and the antineutrino energy losses by − -decay of several typical iron isotopes in the presence of strong electron screening (SES) and in the framework of linear response theory. Our main findings include the following: (a) antineutrino energy losses increase greatly by the SES, and the screening enhancement factor can reach 1,018 due to the Q-value correction and shell and pairing effects in the case of SES; (b) the antineutrino energy loss rates can be suppressed at a relatively lower density and in a higher temperature environment (e.g., 0.1 < 7 < 900, T 9 > 30); and (c) the screening enhancement factor can be decreased by about 16.62% (e.g., for 56 Co).

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Empirical formula for β −-decay half-lives of r-process nuclei

Cited by 18 publications

References 23 publications

Impact of the nuclear mass uncertainties on the r process

Impact of the nuclear mass uncertainties on the r process

Supernova β^- decay of nuclides 53Fe, 54Fe, 55Fe, and 56Fe in strongly screened plasma

Supernova antineutrino energy losses of ⁵⁹Co, ⁵⁶Co, ⁵⁶Ni, and ⁵⁶Fe by β⁻‐decay in strongly screened plasma

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Empirical formula for β −-decay half-lives of r-process nuclei

Cited by 18 publications

References 23 publications

Impact of the nuclear mass uncertainties on the r process

Impact of the nuclear mass uncertainties on the r process

Supernova β^- decay of nuclides 53Fe, 54Fe, 55Fe, and 56Fe in strongly screened plasma

Supernova antineutrino energy losses of 59Co, 56Co, 56Ni, and 56Fe by β−‐decay in strongly screened plasma

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Product

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Supernova antineutrino energy losses of ⁵⁹Co, ⁵⁶Co, ⁵⁶Ni, and ⁵⁶Fe by β⁻‐decay in strongly screened plasma