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Fragmentation of Single-Particle Strength around the Doubly Magic Nucleus  ^{132}Sn and the Position of the 0f_{5/2} Proton-Hole State in ^{131}In.

Authors :
Vaquero V
Jungclaus A
Aumann T
Tscheuschner J
Litvinova EV
Tostevin JA
Baba H
Ahn DS
Avigo R
Boretzky K
Bracco A
Caesar C
Camera F
Chen S
Derya V
Doornenbal P
Endres J
Fukuda N
Garg U
Giaz A
Harakeh MN
Heil M
Horvat A
Ieki K
Imai N
Inabe N
Kalantar-Nayestanaki N
Kobayashi N
Kondo Y
Koyama S
Kubo T
Martel I
Matsushita M
Million B
Motobayashi T
Nakamura T
Nakatsuka N
Nishimura M
Nishimura S
Ota S
Otsu H
Ozaki T
Petri M
Reifarth R
Rodríguez-Sánchez JL
Rossi D
Saito AT
Sakurai H
Savran D
Scheit H
Schindler F
Schrock P
Semmler D
Shiga Y
Shikata M
Shimizu Y
Simon H
Steppenbeck D
Suzuki H
Sumikama T
Symochko D
Syndikus I
Takeda H
Takeuchi S
Taniuchi R
Togano Y
Tsubota J
Wang H
Wieland O
Yoneda K
Zenihiro J
Zilges A
Source :
Physical review letters [Phys Rev Lett] 2020 Jan 17; Vol. 124 (2), pp. 022501.
Publication Year :
2020

Abstract

Spectroscopic factors of neutron-hole and proton-hole states in ^{131}Sn and ^{131}In, respectively, were measured using one-nucleon removal reactions from doubly magic ^{132}Sn at relativistic energies. For ^{131}In, a 2910(50)-keV γ ray was observed for the first time and tentatively assigned to a decay from a 5/2^{-} state at 3275(50) keV to the known 1/2^{-} level at 365 keV. The spectroscopic factors determined for this new excited state and three other single-hole states provide first evidence for a strong fragmentation of single-hole strength in ^{131}Sn and ^{131}In. The experimental results are compared to theoretical calculations based on the relativistic particle-vibration coupling model and to experimental information for single-hole states in the stable doubly magic nucleus ^{208}Pb.

Details

Language :
English
ISSN :
1079-7114
Volume :
124
Issue :
2
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
32004026
Full Text :
https://doi.org/10.1103/PhysRevLett.124.022501