Strong Neutron Pairing in 
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 Nuclei

Revel, A.; Marqués, F.M.; Sorlin, O.; Aumann, T.; Caesar, C.; Holl, M.; Panin, V.; Vandebrouck, M.; Wamers, F.; Álvarez‐Pol, H.; Atar, L.; Avdeichikov, V.V.; Beceiro-Novo, S.; Bemmerer, D.; Benlliure, J.; Bertulani, C. A.; Boillos, J. M.; Boretzky, K.; Borge, María José García; Caamaño, M.; Casarejos, E.; Catford, W. N.; Cederkäll, J.; Chartier, M.; Chulkov, L. V.; Cortina-Gil, D.; Cravo, E.; Crespo, R.; Pramanik, U. Datta; Fernández, P.; Dillmann, I.; Elekes, Z.; Enders, J.; Ershova, O.; Estradé, A.; Farinon, F.; Fraile, L. M.; Freer, M.; Galaviz, D.; Geißel, H.; Gernhäuser, R.; Golubev, P.; Göbel, K.; Hagdahl, J.; Heftrich, T.; Heil, M.; Heine, M.; Heinz, A.; Henriques, A.; Ignatov, A.; Johansson, H.; Jonson, B.; Kahlbow, J.; Kalantar‐Nayestanaki, N.; Kanungo, R.; Kelić-Heil, A.; Knyazev, A.; Kröll, T.; Kurz, N.; Labiche, M.; Langer, C.; Bleis, T. Le; Lemmon, R. C.; Lindberg, Simon; Machado, J.; Marganiec, J.; Movsesyan, A.; Nácher, E.; Najafi, M. A.; Nilsson, T.; Nociforo, C.; Paschalis, S.; Perea, Á.; Petri, M.; Piétri, S.; Plag, R.; Reifarth, R.; Ribeiro, G.; Rigollet, C.; Röder, M.; Rossi, D.; Savran, D.; Scheit, H.; Simon, H.; Syndikus, I.; Taylor, J. T.; Tengblad, O.; Thies, R.; Togano, Y.; Velho, P.; Волков, В. А.; Wagner, A.; Weick, H.; Wheldon, C.; Wilson, G. L.; Winfield, J. S.; Woods, P. J.; Yakorev, D.; Zhukov, M. V.; Zilges, A.; Zuber, Κ.

doi:10.1103/physrevlett.120.152504

Cited by 10 publications

(11 citation statements)

References 43 publications

(59 reference statements)

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“…Few-body multi-neutron systems are located close to the neutron drip line. Thus, they provide us with a unique laboratory to understand nuclear properties at drip lines [1][2][3] and nuclear forces in the absence of Coulomb interaction [4].…”

Section: Introductionmentioning

confidence: 99%

Ab initio no-core Gamow shell-model calculations of multineutron systems

Michel

et al. 2019

Phys. Rev. C

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The existence of multi-neutron systems has always been a debatable question. Indeed, both internucleon correlations and a large continuum coupling occur in these states. We then employ the ab-initio no-core Gamow shell model to calculate the resonant energies and widths of the trineutron and tetraneutron systems with realistic interactions. Our results indicate that trineutron and tetraneutron are both unbound and bear broad widths. The calculated energy and width of tetraneutron are also comparable with recent experimental data. Moreover, our calculations suggest that the energy of trineutron is lower than that of tetraneutron, while its resonance width is also narrower. This strongly suggests that trineutron is more likely to be experimentally observed than tetraneutron. We thus suggest experimentalists to search for trineutron at low energy.

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Section: Introductionmentioning

confidence: 99%

Ab initio no-core Gamow shell-model calculations of multineutron systems

Michel

et al. 2019

Phys. Rev. C

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“…In reference [14], the α-α-n relative energies were examined using Dalitz plots, with a resolution that could be improved using kinematic fitting. Likewise, the study of more neutron rich borromean nuclei, such as 14 Be [13], 18 C and 20 O [22] may reconstruct missing neutrons or detect them directly. Such neutron detectors typically have poor energy and position resolution, so these analyses could be improved using kinematic fitting.…”

Section: Discussionmentioning

confidence: 99%

“…Equation 21 provides the constraint that the total energy of the system is conserved during the reaction. Equation 22 provides the constraint that the three α-particles emerging from 12 C have resulted from the decay of a state with the exact energy of the Hoyle State (7.6542 MeV). Since total momentum conservation was used to reconstruct the momentum of the missing α-particle, this constraint is already met so cannot be utilised further in the kinematic fitting.…”

Section: Charged-particle Spectroscopy With Silicon-strip Detectorsmentioning

confidence: 99%

“…Thus, the kinematic fitting improves the sensitivity to the direct decay by almost an order of magnitude. Dalitz plot analyses are also commonly used when studying the decays of other borromean light nuclei, such as the neutron-rich 14 Be [13], 18 C and 20 O [22]. These are predicted to have neutron halo structures that have previously been investigated through examining the relative energies of the emitted neutrons.…”

Section: Charged-particle Spectroscopy With Silicon-strip Detectorsmentioning

confidence: 99%

See 1 more Smart Citation

A Fast Universal Kinematic Fitting Code for Low-Energy Nuclear Physics: FUNKI_FIT

Smith

Bishop

2019

Physics

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We present an open source kinematic fitting routine designed for low-energy nuclear physics applications. Although kinematic fitting is commonly used in high-energy particle physics, it is rarely used in low-energy nuclear physics, despite its effectiveness. A FORTRAN and ROOT C++ version of the FUNKI_FIT kinematic fitting code have been developed and published open access. The FUNKI_FIT code is universal in the sense that the constraint equations can be easily modified to suit different experimental set-ups and reactions. Two case studies for the use of this code, utilising experimental and Monte-Carlo data, are presented: (1) charged-particle spectroscopy using silicon-strip detectors; (2) charged-particle spectroscopy using active target detectors. The kinematic fitting routine provides an improvement in resolution in both cases, demonstrating, for the first time, the applicability of kinematic fitting across a range of nuclear physics applications. The ROOT macro has been developed in order to easily apply this technique in standard data analysis routines used by the nuclear physics community.

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“…近年来, 中子滴线区原子核的双中子发射成为放射性核束物理的前沿 [62] . 在GSI完成的 18 C和 20 O双中子发射实验研究中, 用同样的HBT分析方法成功解释了两个原子核的中子-中子动量关联函数实验数据, 得出这两个核的两个中子发射时间差或发射机制存在很大差异 [63] , 表明HBT方法是十分有效的鉴别不稳定核的双核子发射机制方法.…”

Section: 双质子发射机制鉴别unclassified