Border of the island of inversion: Unbound states in Ne-29
Journal article, 2022
The nucleus Ne-29 is situated at the border of the island of inversion. Despite significant efforts, no bound low-lying intruder f(7/2) state, which would place Ne-29 firmly inside the island of inversion, has yet been observed. Here, the first investigation of unbound states of Ne-29 is reported. The states were populated in Ne-30(p, pn) and Na-30(p, 2p) reactions at a beam energy of around 230 MeV/nucleon, and analyzed in terms of their resonance properties, partial cross sections, and momentum distributions. The momentum distributions are compared to calculations using the eikonal, direct reaction model, allowing assignments for the observed states. The lowest lying resonance at an excitation energy of 1.48(4) MeV shows clear signs of a significant l = 3 component, giving first evidence for f(7/2) single particle strength in Ne-29. The excitation energies and strengths of the observed states are compared to shell-model calculations using the SDPF-U-MIX interaction.
Author
Matthias Holl
Chalmers, Physics, Subatomic, High Energy and Plasma Physics
Simon Lindberg
Chalmers, Physics, Subatomic and Plasma Physics
Andreas Martin Heinz
Chalmers, Physics, Subatomic, High Energy and Plasma Physics
Y. Kondo
Tokyo Institute of Technology
T. Nakamura
Tokyo Institute of Technology
J. A. Tostevin
Tokyo Institute of Technology
University of Surrey
H. Wang
Tokyo Institute of Technology
Thomas Nilsson
Chalmers, Physics, Subatomic, High Energy and Plasma Physics
N. L. Achouri
Normandie University
H. Al Falou
Lebanese University
L. Atar
Technische Universität Darmstadt
T. Aumann
Helmholtz
Technische Universität Darmstadt
H. Baba
RIKEN
K. Boretzky
Helmholtz
C. Caesar
Technische Universität Darmstadt
Helmholtz
D. Calvet
University Paris-Saclay
H. Chae
Seoul National University
N. Chiga
RIKEN
A. Corsi
University Paris-Saclay
H. L. Crawford
Lawrence Berkeley National Laboratory
F. Delaunay
Normandie University
A. Delbart
University Paris-Saclay
Q. Deshayes
Normandie University
Paloma Diaz Fernandez
Chalmers, Physics, Subatomic and Plasma Physics
Z. Dombradi
Hungarian Academy of Sciences
C. A. Douma
University of Groningen
Z. Elekes
Hungarian Academy of Sciences
P. Fallon
Lawrence Berkeley National Laboratory
I Gasparic
RIKEN
Technische Universität Darmstadt
Ruder Boskovic Institute
J-M Gheller
University Paris-Saclay
J. Gibelin
Normandie University
A. Gillibert
University Paris-Saclay
M. N. Harakeh
Helmholtz
University of Groningen
A. Hirayama
Tokyo Institute of Technology
C. R. Hoffman
Argonne National Laboratory
A. Horvat
Helmholtz
A. Horvath
Eötvös Loránd University (ELTE)
J. W. Hwang
Institute for Basic Science - Korea (IBS)
Seoul National University
T. Isobe
RIKEN
J. Kahlbow
RIKEN
Technische Universität Darmstadt
N. Kalantar-Nayestanaki
University of Groningen
S. Kawase
Kyushu University
S. Kim
Seoul National University
Institute for Basic Science - Korea (IBS)
K. Kisamori
RIKEN
T. Kobayashi
Tohoku University
D. Koerper
Helmholtz
S. Koyama
University of Tokyo
I Kuti
Hungarian Academy of Sciences
V Lapoux
University Paris-Saclay
F. M. Marques
Normandie University
S. Masuoka
University of Tokyo
J. Mayer
University of Cologne
K. Miki
Michigan State University
T. Murakami
Kyoto University
M. Najafi
University of Groningen
K. Nakano
Kyushu University
N. Nakatsuka
Kyoto University
A. Obertelli
University Paris-Saclay
F. de Oliveira Santos
IN2P3 Institut National de Physique Nucleaire et de Physique des Particules
N. A. Orr
Normandie University
H. Otsu
RIKEN
T. Ozaki
Tokyo Institute of Technology
V Panin
RIKEN
S. Paschalis
Technische Universität Darmstadt
A. Revel
IN2P3 Institut National de Physique Nucleaire et de Physique des Particules
D. Rossi
Technische Universität Darmstadt
A. T. Saito
Tokyo Institute of Technology
T. Y. Saito
University of Tokyo
M. Sasano
RIKEN
H. Sato
RIKEN
Y. Satou
Seoul National University
H. Scheit
Technische Universität Darmstadt
F. Schindler
Technische Universität Darmstadt
P. Schrock
University of Tokyo
M. Shikata
Tokyo Institute of Technology
Y. Shimizu
RIKEN
H. Simon
Helmholtz
D. Sohler
Hungarian Academy of Sciences
O. Sorlin
IN2P3 Institut National de Physique Nucleaire et de Physique des Particules
L. Stuhl
Institute for Basic Science - Korea (IBS)
RIKEN
S. Takeuchi
Tokyo Institute of Technology
M. Tanaka
Osaka University
M. Thoennessen
Michigan State University
H. Toernqvist
Technische Universität Darmstadt
Y. Togano
Rikkyo University
Tokyo Institute of Technology
T. Tomai
Tokyo Institute of Technology
J. Tscheuschner
Technische Universität Darmstadt
J. Tsubota
Tokyo Institute of Technology
T. Uesaka
RIKEN
Z. Yang
RIKEN
M. Yasuda
Tokyo Institute of Technology
K. Yoneda
RIKEN
Physical Review C
24699985 (ISSN) 24699993 (eISSN)
Vol. 105 3 034301Exotiska nukleära system vid gränsen för existens - fysik i frontlinjen med perspektiv mot FAIR
Swedish Research Council (VR) (2017-03839), 2018-01-01 -- 2021-12-31.
Experimental studies of exotic, light nuclear systems - combining front-line physics and FAIR preparations
Swedish Research Council (VR) (2011-5324), 2012-01-01 -- 2014-12-31.
Subject Categories
Subatomic Physics
Other Physics Topics
Theoretical Chemistry
DOI
10.1103/PhysRevC.105.034301