Emergence of theN=16shell gap inO21 | Zendy

B. FernándezDomínguez | Zendy; J. S. Thomas | Zendy; W. N. Catford | Zendy; F. Delaunay | Zendy; S. Brown | Zendy; N. A. Orr | Zendy; M. Rejmund | Zendy; M. Labiche | Zendy; M. Chartier | Zendy; N. L. Achouri | Zendy; H. Al Falou | Zendy; N. I. Ashwood | Zendy; D. Beaumel | Zendy; Y. Blumenfeld | Zendy; B. A. Brown | Zendy; R. Chapman | Zendy; N. Curtis | Zendy; C. Force | Zendy; G. de France | Zendy; S. Franchoo | Zendy; J. Guillot | Zendy; P. J. Haigh | Zendy; F. Hammache | Zendy; V. Lapoux | Zendy; R. C. Lemmon | Zendy; François Maréchal | Zendy; A. M. Moro | Zendy; X. Mougeot | Zendy; B. Mouginot | Zendy; L. Nalpas | Zendy; A. Navin | Zendy; N. Patterson | Zendy; B. Pietras | Zendy; E. C. Pollacco | Zendy; A. Leprince | Zendy; A. Ramus | Zendy; J. A. Scarpaci | Zendy; N. de Séréville | Zendy; Ina Stephan | Zendy; O. Sorlin | Zendy; G. L. Wilson | Zendy

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Emergence of theN=16shell gap inO21

Author(s) -

B. FernándezDomínguez,

J. S. Thomas,

W. N. Catford,

F. Delaunay,

S. Brown,

N. A. Orr,

M. Rejmund,

M. Labiche,

M. Chartier,

N. L. Achouri,

H. Al Falou,

N. I. Ashwood,

D. Beaumel,

Y. Blumenfeld,

B. A. Brown,

R. Chapman,

N. Curtis,

C. Force,

G. de France,

S. Franchoo,

J. Guillot,

P. J. Haigh,

F. Hammache,

V. Lapoux,

R. C. Lemmon,

François Maréchal,

A. M. Moro,

X. Mougeot,

B. Mouginot,

L. Nalpas,

A. Navin,

N. Patterson,

B. Pietras,

E. C. Pollacco,

A. Leprince,

A. Ramus,

J. A. Scarpaci,

N. de Séréville,

Ina Stephan,

O. Sorlin,

G. L. Wilson

Publication year - 2011

Publication title -

physical review c

Language(s) - English

Resource type - Journals

eISSN - 1089-490X

pISSN - 0556-2813

DOI - 10.1103/physrevc.84.011301

Subject(s) - excited state , physics , excitation , atomic physics , spectroscopy , analytical chemistry (journal) , chemistry , quantum mechanics , chromatography

5 pages, 2 figures, expérience GANIL/SPIRALThe spectroscopy of 21O has been investigated using a radioactive 20O beam and the (d,p) reaction in inverse kinematics. The ground and first excited states have been determined to be Jpi=5/2+ and Jpi=1/2+ respectively. Two neutron unbound states were observed at excitation energies of 4.76 +- 0.10 and 6.16 +- 0.11. The spectroscopic factor deduced for the lower of these interpreted as a 3/2+ level, reveals a rather pure 0d3/2 single-particle configuration. The large energy difference between the 3/2+ and 1/2+ states is indicative of the emergence of the N=16 magic number. For the higher lying resonance, which has a character consistent with a spin-parity assignment of 3/2+ or 7/2-, a 71% branching ratio to the first 2+ state in 20O has been observed. The results are compared with new shell model calculations

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