Observation of β-delayed two-proton emission in the decay of 22Si

Xu, X. X.; Lin, C. J.; Sun, L. J.; Wang, J.S.; Lam, Y. H.; Lee, J.; Fang, D. Q.; Li, Z.H.; Smirnova, N. A.; Yuan, Cenxi; Yang, L.; Wang, Y.T.; Li, J.; Ma, Nan-Ru; Wang, K.; Zang, H. L.; Wang, H.W.; Li, C.; Liu, M.L.; Wang, J.G.; Shi, C. Z.; Nie, M.; Li, X.F.; Li, H.; Ma, J.B.; Ma, P.; Jin, S.; Huang, M. R.; Bai, Zhiyong; Feng, Yan; Jia, H. M.; Liu, Z.H.; Wang, D.X.; Yang, Y.; Zhou, Yuanjing; Ma, Weizhe; Chen, J.; Hu, Zhengguo; Wang, M.; Zhang, Y.H.; Ma, Xuan; Zhou, X. H.; Ma, YG; Xu, H. S.; Xiao, G. Q.; Zhang, H.Q.

doi:10.1016/j.physletb.2017.01.028

Cited by 38 publications

(21 citation statements)

References 39 publications

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“…这是首次从实验上提取出 22 Si的质量, 表明 22 Si是一个非常临界的滴线核, 值得进一步关注. 目前的结果虽然误差较大, 但可以检验众多的质量模型 [27] . 需要提及的是, Holt等人 [43] 图 9 (网络版彩色) 27 Si的衰变纲图 Figure 9 (Color online) Decay scheme of 27 Si 图 10 (网络版彩色) 26 Si(p,γ) 27 P的热核反应率.…”

Section: Si的β2p衰变及其质量unclassified

“…目前的结果虽然误差较大, 但可以检验众多的质量模型 [27] . 需要提及的是, Holt等人 [43] 图 9 (网络版彩色) 27 Si的衰变纲图 Figure 9 (Color online) Decay scheme of 27 Si 图 10 (网络版彩色) 26 Si(p,γ) 27 P的热核反应率. Decay of the nucleus far from the β-stability line is a currently hot topic in the field of nuclear physics.…”

Section: Si的β2p衰变及其质量unclassified

“…It provides another means to identify halo nuclei and a new clue to explore the isospin breaking. In the study of 27 S decay, the half-life was determined as (16.3±0.2) ms, which is the most precise one so far. Total of 27 βp decay branches were observed, and among them 24 with branch ratio less than 5% were new found branches.…”

Section: Si的β2p衰变及其质量mentioning

confidence: 99%

“…Besides, 1 β2p decay via the isobaric analogue state (T=5/2) of daughter nucleus 27 P to the ground state of 25 Al was confirmed. The level energies of 27 P, branch ratios and log(ft)s of β-feeding to these levels were determined, and therefore the decay scheme of 27 S was established perfectly. Thanks to the high energy resolution of the detector system, the masses of 27 P and 27 S were determined with very high precision as Δ( 27P)=-659(9) keV and Δ( 27 S)=17678(77) keV, respectively.…”

Section: Si的β2p衰变及其质量mentioning

confidence: 99%

“…Thanks to the high energy resolution of the detector system, the masses of 27 P and 27 S were determined with very high precision as Δ( 27P)=-659(9) keV and Δ( 27 S)=17678(77) keV, respectively. Based on the new mass data, the thermonuclear reaction rate of 26 Si(p,γ) 27 P was deduced and its influence on the nucleosynthesis of galactic 26 Al in scenes involving nova and X-ray burst (XRB) was discussed. The abundance of A=26 in the burst ashes is increased by a factor of 2.4, while no substantial change was found in the XRB energy generation rate or the light curve.…”

Section: Si的β2p衰变及其质量mentioning

confidence: 99%

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Section: Si的β2p衰变及其质量unclassified

Section: Si的β2p衰变及其质量mentioning

confidence: 99%

Section: Si的β2p衰变及其质量mentioning

confidence: 99%

Section: Si的β2p衰变及其质量mentioning

confidence: 99%

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Nucleosynthesis is a complex process in astro-nuclear evolution. In this work, we construct a directed multi-layer nuclear reaction network using the substrate-product method from a thermonuclear reaction database, JINA REACLIB. The network contains four layers, namely n-, p-, h-and r, corresponding to the reaction types involved in neutrons, protons, 4 He and the remainder, respectively. The degree values (i.e. numbers of reactions) for three layers of n-, p-and h-have a significant correlation with one another, and their topological structures exhibit a similar regularity. However, the r-layer has a more complex topological structure than others and has less correlation with the other three layers. A software package named 'mfinder' is employed to analyze the motif structure of the nuclear reaction network. We thus identify the most frequent reaction patterns of interconnections occurring among different nuclides. This work provides a novel approach to study the nuclear reaction network prevailing in the astrophysical context.

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Observation of β-delayed two-proton emission in the decay of 22Si

Cited by 38 publications

References 39 publications

Progress on decays of extremely proton-rich nuclei based on the HIRFL-RIBLL1 facility

Progress on decays of extremely proton-rich nuclei based on the HIRFL-RIBLL1 facility

Network structure of thermonuclear reactions in nuclear landscape

Characterization of CIAE developed double-sided silicon strip detector for charged particles

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