Border of the island of inversion: Unbound states in Ne-29
Artikel i vetenskaplig tidskrift, 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.

Författare

Matthias Holl

Chalmers, Fysik, Subatomär, högenergi- och plasmafysik

Simon Lindberg

Chalmers, Fysik, Subatomär fysik och plasmafysik

Andreas Martin Heinz

Chalmers, Fysik, Subatomär, högenergi- och plasmafysik

Y. Kondo

Tokyo Institute of Technology

T. Nakamura

Tokyo Institute of Technology

J. A. Tostevin

University of Surrey

Tokyo Institute of Technology

H. Wang

Tokyo Institute of Technology

Thomas Nilsson

Chalmers, Fysik, Subatomär, högenergi- och plasmafysik

N. L. Achouri

Normandie Université

H. Al Falou

Universite Libanaise

L. Atar

Technische Universität Darmstadt

T. Aumann

Technische Universität Darmstadt

Helmholtz

H. Baba

RIKEN

K. Boretzky

Helmholtz

C. Caesar

Technische Universität Darmstadt

Helmholtz

D. Calvet

Université Paris-Saclay

H. Chae

Seoul National University

N. Chiga

RIKEN

A. Corsi

Université Paris-Saclay

H. L. Crawford

Lawrence Berkeley National Laboratory

F. Delaunay

Normandie Université

A. Delbart

Université Paris-Saclay

Q. Deshayes

Normandie Université

Paloma Diaz Fernandez

Chalmers, Fysik, Subatomär fysik och plasmafysik

Z. Dombradi

Magyar Tudomanyos Akademia

C. A. Douma

Rijksuniversiteit Groningen

Z. Elekes

Magyar Tudomanyos Akademia

P. Fallon

Lawrence Berkeley National Laboratory

I Gasparic

Technische Universität Darmstadt

RIKEN

Ruđer Bošković Institute

J-M Gheller

Université Paris-Saclay

J. Gibelin

Normandie Université

A. Gillibert

Université Paris-Saclay

M. N. Harakeh

Rijksuniversiteit Groningen

Helmholtz

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

Technische Universität Darmstadt

RIKEN

N. Kalantar-Nayestanaki

Rijksuniversiteit 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

Magyar Tudomanyos Akademia

V Lapoux

Université Paris-Saclay

F. M. Marques

Normandie Université

S. Masuoka

University of Tokyo

J. Mayer

Universität zu Köln

K. Miki

Michigan State University

T. Murakami

Kyoto University

M. Najafi

Rijksuniversiteit Groningen

K. Nakano

Kyushu University

N. Nakatsuka

Kyoto University

A. Obertelli

Université Paris-Saclay

F. de Oliveira Santos

IN2P3 Institut National de Physique Nucleaire et de Physique des Particules

N. A. Orr

Normandie Université

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

Magyar Tudomanyos Akademia

O. Sorlin

IN2P3 Institut National de Physique Nucleaire et de Physique des Particules

L. Stuhl

RIKEN

Institute for Basic Science - Korea (IBS)

S. Takeuchi

Tokyo Institute of Technology

M. Tanaka

Osaka University

M. Thoennessen

Michigan State University

H. Toernqvist

Technische Universität Darmstadt

Y. Togano

Tokyo Institute of Technology

Rikkyo University

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

2469-9985 (ISSN) 2469-9993 (eISSN)

Vol. 105 3 034301

Exotiska nukleära system vid gränsen för existens - fysik i frontlinjen med perspektiv mot FAIR

Vetenskapsrådet (VR) (2017-03839), 2018-01-01 -- 2021-12-31.

Experimentella studier av exotiska, lätta nukleära system

Vetenskapsrådet (VR) (2011-5324), 2012-01-01 -- 2014-12-31.

Ämneskategorier

Subatomär fysik

Annan fysik

Teoretisk kemi

DOI

10.1103/PhysRevC.105.034301

Mer information

Senast uppdaterat

2022-03-29