Search for halo nucleus in Mg isotopes through the measurements of reaction cross sections towards the vicinity of neutron drip line

Takechi, M.; Suzuki, Shinji; Nishimura, D.; Fukuda, M.; Ohtsubo, T.; Nagashima, M.; Suzuki, Toshio; Yamaguchi, Takayuki; Ozawa, A.; Moriguchi, T.; Ohishi, Hiroyuki; Sumikama, T.; Geißel, H.; Ishihara, M.; Aoi, N.; Chen, Rui Jiu; Fang, D. Q.; Fukuda, N.; Fukuoka, S.; Furuki, H.; Inabe, N.; Ishibashi, Yuji; Itoh, Takehiro; Izumikawa, T.; Kameda, D.; Kubo, T.; Lee, C. S.; Lantz, Mattias; Yu, Guanzhen; Matsuta, K.; Mihara, M.; Momota, S.; Nagae, D.; Nishikiori, R.; Niwa, T.; Ohnishi, T.; Okumura, Keiji; Ogura, Toshiyuki; Sakuraï, H.; Sato, Kiyokazu; Shimbara, Y.; Suzuki, Hiroshi; Takeda, Hiroyuki; Takeuchi, S.; Tanaka, K.; Uenishi, H.; Winkler, M.; Yanagisawa, Y.; Watanabe, Shin; Minomo, Kosho; Tagami, Shingo; Shimada, Mikio; Kimura, Masaaki; Matsumoto, Takuma; Shimizu, Yoshifumi R.; Yahiro, Masanobu

doi:10.1051/epjconf/20146602101

Cited by 14 publications

(10 citation statements)

References 14 publications

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“…Recently, measurements of σ R for 24−38 Mg isotopes on 12 C target at the beam energy of 240 MeV/nucleon have been reported in Ref. [41]. From a similar reasoning, it was suggested in this study that 37 Mg (Z = 12, N = 25) that lies in N = 20 − 28 island of inversion, is also a candidate for having a one-neutron halo structure.…”

Section: Introductionsupporting

confidence: 65%

Coulomb breakup of 37Mg and its ground state structure

et al. 2015

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We calculate Coulomb breakup of the neutron rich nucleus 37 Mg on a Pb target at the beam energy of 244 MeV/nucleon within the framework of a finite range distorted wave Born approximation theory that is extended to include the effects of projectile deformation. In this theory, the breakup amplitude involves the full wave function of the projectile ground state. Calculations have been carried out for the total one-neutron removal cross section (σ −1n ), the neutron-core relative energy spectrum, the parallel momentum distribution of the core fragment, the valence neutron angular, and energy-angular distributions. The calculated σ −1n has been compared with the recently measured data to put constraints on the spin parity, and the one-neutron separation energy (S n ) of the 37 Mg ground state ( 37 Mg gs ). The dependence of σ −1n on the deformation of this state has also been investigated. While a spin parity assignment of 7/2 − for the 37 Mg gs is ruled out by our study, neither of the 3/2 − and 1/2 + assignments can be clearly excluded. Using the spectroscopic factor of one for both the 3/2 − and 1/2 + configurations and ignoring the projectile deformation effects, the S n valuesEmail addresses: shub1dph@iitr.ac.in (Shubhchintak), nph10dph@iitr.ac.in (Neelam), rcfphfph@iitr.ac.in (R. Chatterjee), radhey.shyam@saha.ac.in (R. Shyam), kazuo.tsushima@gmail.com (K. Tsushima) Preprint submitted to ElsevierMarch 25, 2015 of 0.35±0.06 MeV and 0.50±0.07 MeV, respectively, are extracted for the two configurations. However, the extracted S n is strongly dependent on the spectroscopic factor and the deformation effects of the respective configuration. The narrow parallel momentum distribution of the core fragment and the strong forward peaking of the valence neutron angular distribution suggest a one-neutron halo configuration in either of the 2p 3/2 and 2s 1/2 configurations of the 37 Mg ground state.

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Section: Introductionsupporting

confidence: 65%

Coulomb breakup of 37Mg and its ground state structure

et al. 2015

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“…The nucleus 37 Mg has a large uncertainty in its one-neutron separation energy (0.162±0.686 MeV [7]) and has controversies regarding its ground state spin-parity. Recently measured large breakup cross section [5] and reaction cross section [6] seems to suggest a halo structure in 37 Mg. The nuclei in island of inversion are expected to have significant components of 2p − 2h [ν(sd) −2 (f p) 2 ] neutron intruder configurations.…”

Section: Resultsmentioning

confidence: 94%

Projectile deformation effects in the breakup of³⁷Mg

Shubhchintak¹,

Chatterjee²,

Shyam³

2016

EPJ Web of Conferences

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“…In this paper, we apply the microscopic framework to Mg isotopes that cross the IoI and reach the drip-line nucleus 40 Mg with the N = 28 magicity. We discuss where the border of the IoI is and whether the N = 20 and 28 magicities survive by comparing the theoretical results with recently measured σ R [18], and E(2 + ) and E(4 + ) [9]. This presentation is based on our recent work of Ref.…”

Section: Introductionmentioning

confidence: 97%

Ground-State Properties of Mg Isotopes in and Beyond the Island of Inversion through Reaction Cross Sections

Watanabe¹,

Minomo²,

Shimada³

et al. 2015

Proceedings of the Conference on Advances in Radioactive Isotope Science (ARIS2014)

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We analyze recently measured total reaction cross sections (σ R ) for [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] Mg incident on 12 C targets at 240 MeV/nucleon by using the microscopic framework based on the double folding model and antisymmetrized molecular dynamics (AMD). The framework reproduces not only the measured σ R but also other existing measured ground-state properties of Mg Isotopes (spin parity, total binding energy, one-neutron separation energy, and 2 + and 4 + excitation energies) quite well. AMD predicts large deformation from 31 Mg 19 to a drip-line nucleus 40 Mg 28 , indicating that both the N = 20 and 28 magicities disappear.

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Search for halo nucleus in Mg isotopes through the measurements of reaction cross sections towards the vicinity of neutron drip line

Cited by 14 publications

References 14 publications

Coulomb breakup of 37Mg and its ground state structure

Coulomb breakup of 37Mg and its ground state structure

Projectile deformation effects in the breakup of³⁷Mg

Ground-State Properties of Mg Isotopes in and Beyond the Island of Inversion through Reaction Cross Sections

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Search for halo nucleus in Mg isotopes through the measurements of reaction cross sections towards the vicinity of neutron drip line

Cited by 14 publications

References 14 publications

Coulomb breakup of 37Mg and its ground state structure

Coulomb breakup of 37Mg and its ground state structure

Projectile deformation effects in the breakup of37Mg

Ground-State Properties of Mg Isotopes in and Beyond the Island of Inversion through Reaction Cross Sections

Contact Info

Product

Resources

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Projectile deformation effects in the breakup of³⁷Mg