Spectroscopy of 13Be

Belozyorov, A. V.; Kalpakchieva, R.; Penionzhkevich, Yu. É.; Dlouhý, Z.; Piskorˇ, Sˇ.; Vincour, J.; Bohlen, H. G.; Lucke-Petsch, M. von; Ostrowski, A. N.; Alexandrov, Dmitri V.; Nikolskii, E. Yu.; Novatskiǐ, B. G.; Stepanov, D. N.

doi:10.1016/s0375-9474(98)00217-6

Cited by 53 publications

(39 citation statements)

References 12 publications

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“…Since 13 Be is an unbound nucleus, all energy levels are resonance states. A resonance about 2 MeV above the neutron-decay threshold has been observed in several experiments and it has been assigned to a 5/2 + state [31][32][33][34][35][36][37][38]. However, other levels of 13 Be have not been confirmed yet.…”

Section: Introductionmentioning

confidence: 99%

Breaking ofN=8magicity in13Be

Kanada-En’yo

2012

Phys. Rev. C

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The structure of 13 Be was investigated with antisymmetrized molecular dynamics. The variation after spin and parity projections was performed. An unnatural parity 1/2 − state was suggested to be lower than the 5/2 + state indicating that vanishing of the N = 8 magic number occurs in 13 Be. A low-lying 3/2 + state with a 2hω configuration was also suggested. Developed cluster structures were found in the intruder states. The lowering mechanism of the intruder states was discussed in terms of molecular orbitals around a 2α core.

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Section: Introductionmentioning

confidence: 99%

Breaking ofN=8magicity in13Be

Kanada-En’yo

2012

Phys. Rev. C

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“…There have been a series of experiments to study 13 Be [5][6][7][8]. That 13 Be is unbound was suggested more than 30 years ago [9,10], and confirmed in 1973 [11].…”

Section: Introductionmentioning

confidence: 99%

Study of 14Be with core excitation

2004

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“…This trend goes on even for 44 S and N = 28 [40], at variance with 48 Ca. In the case of 32 Mg at N = 20, the B(E2) was found to be large, a value which is not compatible with a spherical nucleus [41].…”

Section: Direct Reactions Are Necessary To Go Further and Inelastic Smentioning

confidence: 98%

“…The structure of its ground state is still an open question both from an experimental [48,49] and theoretical point of view. The relative ordering of the 1p 1/2 , 2s 1/2 and 2d 5/2 sub-shells in 13 Be as well as the B(E2) value for 12 Be are of crucial importance for the description of the halo nucleus 14 Be.…”

Section: Direct Reactions Are Necessary To Go Further and Inelastic Smentioning

confidence: 99%

“…18 48 Ca and 88 Sr for which the proton and neutron transition densities and therefore the values of the M p and M n transition matrix elements are known from electron and high energy proton inelastic scattering measurements. For the same nuclei we have analysed low energy inelastic scattering angular distributions in the JLM SM formalism and M p and M n transition matrix elements were also obtained.…”

Section: Calculations With Shell Model Densitiesmentioning

confidence: 99%

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