Lightest and heaviest two-neutron halo nuclei, $^{6}$He and $^{22}$C

Abstract

Abstract:The microscopic cluster model approach has been performed to study the nuclear structure of the lightest and heaviest two-neutron halo nuclei, 6 He and 22 C, respectively. The matter radius and binding energy for the 6 He and 22 C nuclei are calculated and the effect of the core deformation ( 20 C) on the properties of 22 C nuclei is also discussed.Calculations have shown that the microscopic cluster model provides a good description of binding energy as well as matter radius in comparison to experimental data. The fittings of some parameters such as central potential depth, and surface diffuseness value (a) are discussed to find agreement in the results with the available experimental data. The exotic properties of two-neutron halo nuclides 6 He and 22 C such as weak binding energy, abnormal large matter radius, and Borromean system have been confirmed in the present work.

Study of resonances in exotic neutron-rich 14Be by the use of isospectral potential

“…The two-body components (C-n & n-n) cannot be bound by the close proximity interaction that binds the extensive three-body systems (C-n -n). Resonances and excited states slightly above the binding threshold are both exciting and scientifically valuable properties of halo nuclei [1][2][3]. Tanihata and his coworkers are recognized as the first group to confirm the 2n-halo structure in neutron-rich 11 Li in 1985, and their work has piqued the interest of the nuclear physics community around the globe [4].…”

“…Tanihata and his coworkers are recognized as the first group to confirm the 2n-halo structure in neutron-rich 11 Li in 1985, and their work has piqued the interest of the nuclear physics community around the globe [4]. Some of the more intriguing instances of halo nuclei are: confirmed one-neutron halo structure in 11 Be [1][2][3][4][5], 14 B [6,7], 19 C [8][9][10][11], 31 Ne [12][13][14][15], and 37 Mg [16,17]; two-neutron halo structure in 6 He [18-21], 11 Li [22][23][24], 14 Be [25][26], 22 C [27-29] , and 40,42,44 Mg [30][31]; one-proton halo structure in 8 B [32], 26 P [33], 17 F [34], and two proton halo structure in 27 S [35], 17 Ne [36].…”

Nuclear Structure of the Heaviest Boron Isotope

“…In this study, of specific interest are the heaviest isotope of Boron, the two-neutron halo nucleus, 19 B also the associated bound or unbound sub-system 18 B, which are criticalto determining the 17 B-n interaction inthe three-body model.Actually, the nuclear level structures of 18 Bcan focus on the growth of the ν2s 1/2 level which can become degenerate in this area [1,2]. In terms of realizing the halo structure of a nucleus;calculations of total cross sections give the first indications [3].…”

Study of resonances in exotic drip-line nuclei by the use of super-symmetric quantum mechanics

“…In the nuclear landscape, one may find some of the observed one-neutron halo nuclei-17 B, 19 C; two-neutron halo nuclei- 6 He, 11 Li, 11,14 Be; one-proton halo nuclei-8 B, 26 P, 20 C; two-proton halo nuclei- 17 Ne, 27 S and also four-neutron halo nuclei- 14 Be, 19 B, etc [1] [2] [3] [4] [5] [6] [7] [8]. Due to low-density envelope surrounding the dense core, halo-nuclei have unusually large RMS matter radii (larger than the liquid-drop model prediction of R A ∝ A 1/3 ) as reported by Audi et al 2003 [9], Acharya et al 2013 [10].…”