Evidence for particle stability of F and particle instability of N and O

Sakuraï, H.; Lukyanov, S. M.; Notani, M.; Aoi, N.; Beaumel, D.; Fukuda, N.; Hirai, M.; Ideguchi, E.; Imai, N.; Ishihara, M.; Iwasaki, H.; Kubo, T.; Kusaka, K.; Kumagai, Hiroshi; Nakamura, Takashi; Ogawa, Hiroshi; Penionzhkevich, Yu. É.; Teranishi, Takashi; Watanabe, Yutaka; Yoneda, K.; Yoshida, Akihiro

doi:10.1016/s0370-2693(99)00015-5

Cited by 219 publications

(94 citation statements)

References 22 publications

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“…The ground and first excited states have been determined to be J π = 5/2 + and 1/2 + respectively. Two neutron unbound states were observed at excitation energies of 4.77 (10) and 6.17(11) MeV. The spectroscopic factor deduced for the lower of these, interpreted as a 3/2 + level, reveals a relatively pure (60%) 0d 3/2 single-particle configuration, in good agreement with shell-model calculations which predict 26 O to be unbound.…”

supporting

confidence: 74%

Emergence of theN=16shell gap inO21

Fernández–Domínguez¹,

Thomas²,

Catford³

et al. 2011

Phys. Rev. C

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supporting

confidence: 74%

Emergence of theN=16shell gap inO21

Fernández–Domínguez¹,

Thomas²,

Catford³

et al. 2011

Phys. Rev. C

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“…The resultant beam included several nuclei, mainly 17 B, 19 C, 20 C, 21 N, and 22 N with a total intensity of about 100 particle/s (pps), to which the contribution of 21 N was around 30 pps. The identification of these constituents was carried out event by event by using energy loss ( E), time-of-flight (ToF), and magnetic rigidity (Bρ) information [8]. A complete separation of the isotopes was achieved by the E-ToF-Bρ method.…”

Section: Methodsmentioning

confidence: 99%

Nuclear structure study ofN19,21nuclei byγspectroscopy

et al. 2010

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The structure of neutron-rich nitrogen nuclei has been studied by use of neutron removal reaction and inelastic scattering. Mass and charge deformations have been deduced for the first excited state of 21 N, which indicates the partial persistence of the N = 14 subshell closure in nitrogen isotopes. The spectroscopic information obtained on the structure of 19,21 N confirms the results from a previous experiment.

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“…Although 28 O gains energy from neutron and proton shell closures, it is known to be unbound since 15 years now [23]. The question of the location of the dripline at N=16 in C, F and O cannot be reproduced by microscopic models with 2-body interaction only.…”

Section: Three-body Forces and Continuum Effects: The Oxygen Biding Ementioning

confidence: 99%

Physics Program at the RIBF with MINOS

Obertelli

Doornenbal²,

Corsi³

et al. 2015

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

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MINOS is a new device composed of a thick hydrogen target and a vertex tracker [1]. It has been primarily conceived for the spectroscopy of rare isotopes produced at fragmentation facilities such as the RIKEN Radioactive Isotope Beam Facility. In the near future, MINOS in association with other detectors and spectrometers should contribute to exciting physics programs at the RIBF focusing on nuclei produced by hydrogen-induced secondary knockout reactions. The full detector and its electronics have been finalized at CEA Saclay and validated in Japan at the end of 2013. Among foreseen experiments, a scientific program named SEASTAR dedicated to the study of shell evolution and measurement of new 2 + state energies in medium-mass unstable nuclei has been initiated at the RIBF. SEASTAR aims at exploiting the unique opportunities offered by the RIBF and the association of the high-efficiency DALI2 gamma array [2] and MINOS. The first campaign was held in May 2014. In this communication, a brief presentation of the MINOS detection system is presented as well as the intended physics program at the RIBF. A report on the first SEASTAR campaign foreseen this spring is given.

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Evidence for particle stability of F and particle instability of N and O

Cited by 219 publications

References 22 publications

Emergence of theN=16shell gap inO21

Emergence of theN=16shell gap inO21

Nuclear structure study ofN19,21nuclei byγspectroscopy

Physics Program at the RIBF with MINOS

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