Extending the Southern Shore of the Island of Inversion to ^{28}F.

Journal

Physical review letters

ISSN: 1079-7114

Titre abrégé: Phys Rev Lett

Pays: United States

ID NLM: 0401141

Informations de publication

Date de publication:
17 Apr 2020

Historique:

revised: 25 03 2020

received: 17 01 2020

accepted: 26 03 2020

entrez: 2 5 2020

pubmed: 2 5 2020

medline: 2 5 2020

Statut: ppublish

Résumé

Detailed spectroscopy of the neutron-unbound nucleus ^{28}F has been performed for the first time following proton/neutron removal from ^{29}Ne/^{29}F beams at energies around 230 MeV/nucleon. The invariant-mass spectra were reconstructed for both the ^{27}F^{(*)}+n and ^{26}F^{(*)}+2n coincidences and revealed a series of well-defined resonances. A near-threshold state was observed in both reactions and is identified as the ^{28}F ground state, with S_{n}(^{28}F)=-199(6) keV, while analysis of the 2n decay channel allowed a considerably improved S_{n}(^{27}F)=1620(60) keV to be deduced. Comparison with shell-model predictions and eikonal-model reaction calculations have allowed spin-parity assignments to be proposed for some of the lower-lying levels of ^{28}F. Importantly, in the case of the ground state, the reconstructed ^{27}F+n momentum distribution following neutron removal from ^{29}F indicates that it arises mainly from the 1p_{3/2} neutron intruder configuration. This demonstrates that the island of inversion around N=20 includes ^{28}F, and most probably ^{29}F, and suggests that ^{28}O is not doubly magic.

Identifiants

DOI: 10.1103/PhysRevLett.124.152502 PMID: 32357034

pubmed: 32357034

doi: 10.1103/PhysRevLett.124.152502

doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

152502

Auteurs

A Revel (A)

Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France.

O Sorlin (O)

Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France.

F M Marqués (FM)

LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France.

Y Kondo (Y)

Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.

J Kahlbow (J)

Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

T Nakamura (T)

Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.

N A Orr (NA)

LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France.

F Nowacki (F)

Université de Strasbourg, IPHC, 23 rue de Loess 67037 Strasbourg, France.

CNRS, UMR7178, 67037 Strasbourg, France.

J A Tostevin (JA)

Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom.

C X Yuan (CX)

Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China.

N L Achouri (NL)

LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France.

H Al Falou (H)

Lebanese University, Beirut, Lebanon.

L Atar (L)

Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.

T Aumann (T)

Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.

GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany.

H Baba (H)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

K Boretzky (K)

GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany.

C Caesar (C)

Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.

GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany.

D Calvet (D)

Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France.

H Chae (H)

IBS, 55, Expo-ro, Yuseong-gu, Daejeon 34126, Korea.

N Chiga (N)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

A Corsi (A)

Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France.

H L Crawford (HL)

Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

F Delaunay (F)

LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France.

A Delbart (A)

Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France.

Q Deshayes (Q)

LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France.

Z Dombrádi (Z)

Institute of Nuclear Research, Atomki, 4001 Debrecen, Hungary.

C A Douma (CA)

KVI-CART, University of Groningen, Zernikelaan 25, 9747 AA Groningen, The Netherlands.

Z Elekes (Z)

Institute of Nuclear Research, Atomki, 4001 Debrecen, Hungary.

P Fallon (P)

Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

I Gašparić (I)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

Ruđer Bošković Institute, HR-10002 Zagreb, Croatia.

J-M Gheller (JM)

Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France.

J Gibelin (J)

LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France.

A Gillibert (A)

Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France.

M N Harakeh (MN)

GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany.

KVI-CART, University of Groningen, Zernikelaan 25, 9747 AA Groningen, The Netherlands.

W He (W)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

A Hirayama (A)

Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.

C R Hoffman (CR)

Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.

M Holl (M)

GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany.

A Horvat (A)

GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany.

Á Horváth (Á)

Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary.

J W Hwang (JW)

Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.

T Isobe (T)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

N Kalantar-Nayestanaki (N)

KVI-CART, University of Groningen, Zernikelaan 25, 9747 AA Groningen, The Netherlands.

S Kawase (S)

Department of Advanced Energy Engineering Science, Kyushu University, Kasuga, Fukuoka 816-8580, Japan.

S Kim (S)

Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.

K Kisamori (K)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

T Kobayashi (T)

Department of Physics, Tohoku University, Miyagi 980-8578, Japan.

D Körper (D)

GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany.

S Koyama (S)

Unversity of Tokyo, Tokyo 1130033, Japan.

I Kuti (I)

Institute of Nuclear Research, Atomki, 4001 Debrecen, Hungary.

V Lapoux (V)

Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France.

S Lindberg (S)

Institutionen för Fysik, Chalmers Tekniska Högskola, 412 96 Göteborg, Sweden.

S Masuoka (S)

Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.

J Mayer (J)

Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany.

K Miki (K)

National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.

T Murakami (T)

Department of Physics, Kyoto University, Kyoto 606-8502, Japan.

M Najafi (M)

KVI-CART, University of Groningen, Zernikelaan 25, 9747 AA Groningen, The Netherlands.

K Nakano (K)

Department of Advanced Energy Engineering Science, Kyushu University, Kasuga, Fukuoka 816-8580, Japan.

N Nakatsuka (N)

Department of Physics, Kyoto University, Kyoto 606-8502, Japan.

T Nilsson (T)

Institutionen för Fysik, Chalmers Tekniska Högskola, 412 96 Göteborg, Sweden.

A Obertelli (A)

Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France.

F de Oliveira Santos (F)

Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France.

H Otsu (H)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

T Ozaki (T)

Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.

V Panin (V)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

S Paschalis (S)

Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.

D Rossi (D)

Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.

A T Saito (AT)

Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.

T Saito (T)

Unversity of Tokyo, Tokyo 1130033, Japan.

M Sasano (M)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

H Sato (H)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

Y Satou (Y)

Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.

H Scheit (H)

Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.

F Schindler (F)

Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.

P Schrock (P)

Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.

M Shikata (M)

Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.

Y Shimizu (Y)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

H Simon (H)

GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany.

D Sohler (D)

Institute of Nuclear Research, Atomki, 4001 Debrecen, Hungary.

L Stuhl (L)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

S Takeuchi (S)

Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.

M Tanaka (M)

Department of Physics, Osaka University, Osaka 560-0043, Japan.

M Thoennessen (M)

National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.

H Törnqvist (H)

Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.

Y Togano (Y)

Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.

T Tomai (T)

Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.

J Tscheuschner (J)

Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.

J Tsubota (J)

Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.

T Uesaka (T)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

Z Yang (Z)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

M Yasuda (M)

Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.

K Yoneda (K)

RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.

Classifications MeSH