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사범대학
과학교육과
Journal papers
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Spectroscopy of Be 13 through isobaric analog states in B 13
Title
Spectroscopy of Be 13 through isobaric analog states in B 13
Authors
Hunt
;
C.
;
Ahn
;
S.
;
Bishop
;
J.
;
Koshchiy
;
E.
;
Aboud
;
Alcorta
;
M.
;
Bosh
;
A.
;
Hahn
;
K.
;
Han
;
Parker
;
C.E.
;
Pollacco
;
E.C.
;
Roeder
;
B.T.
;
Roosa
;
Upadhyayula
;
Volya
;
A.S.
;
Rogachev
;
G.V.
Ewha Authors
한인식
SCOPUS Author ID
한인식
Issue Date
2023
Journal Title
Physical Review C
ISSN
2469-9985
Citation
Physical Review C vol. 108, no. 5
Publisher
American Physical Society
Indexed
SCIE; SCOPUS
Document Type
Article
Abstract
Background: Spectroscopy of the exotic, neutron unbound beryllium isotope Be13 is still a puzzle despite significant experimental efforts. Purpose: We aim to observe T=5/2 states in B13, establish spin-parities and spectroscopic factors, and use isospin symmetry to inform spectroscopy of Be13. Methods: Excitation functions for resonance elastic scattering of Be12 on protons were measured in the center-of-mass energy range from 1 to 5 MeV. Results: Two T=5/2 states in B13 at excitation energies 18.25 and 19.95 MeV were observed. Unambiguous 1/2+ and 5/2+ spin-parity assignments were made, and spectroscopic factors were established using the R-matrix analysis of the measured Be12+p excitation functions. Conclusions: We provide the first direct and unambiguous spin-parity assignments and spectroscopic factor measurements for the resonances in the A=13, T=5/2 isobaric multiplet. This puts us on a solid footing to identify the 2.3 MeV state in Be13 as 5/2+ and infer the existence of an s-wave (1/2+) resonance at around 0.6 MeV with relatively small spectroscopic factor. © 2023 American Physical Society.
DOI
10.1103/PhysRevC.108.L051606
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