Complete set of bound negative-parity states in the neutron-rich nucleus <math xmlns="http://www.w3.org/1998/Math/MathML"><mmultiscripts><mi mathvariant="normal">N</mi><mprescripts></mprescripts><none></none><mrow><mn>18</mn></mrow></mmultiscripts></math>

S. Ziliani; M. Ciemała; F. C. L. Crespi; S. Leoni; B. Fornal; T. Suzuki; T. Otsuka; A. Maj; P. Bednarczyk; G. Benzoni; A. Bracco; C. Boiano; S. Bottoni; S. Brambilla; M. Bast; M. Beckers; T. Braunroth; F. Camera; N. Cieplicka-Oryńczak; E. Clément; S. Coelli; O. Dorvaux; S. Erturk; G. de France; C. Fransen; A. Goldkuhle; J. Grębosz; M. N. Harakeh; Ł. W. Iskra; B. Jacquot; A. Karpov; M. Kicińska-Habior; Y. Kim; M. Kmiecik; A. Lemasson; S. M. Lenzi; M. Lewitowicz; H. Li; I. Matea; K. Mazurek; C. Michelagnoli; M. Matejska-Minda; B. Million; C. Müller-Gatermann; V. Nanal; P. Napiorkowski; D. R. Napoli; R. Palit; M. Rejmund; Ch. Schmitt; M. Stanoiu; I. Stefan; E. Vardaci; B. Wasilewska; O. Wieland; M. Ziębliński; M. Zielińska

doi:10.1103/PhysRevC.104.L041301

Letter

Complete set of bound negative-parity states in the neutron-rich nucleus ${}^{18}N$

S. Ziliani ^1,2, M. Ciemała³, F. C. L. Crespi^1,2, S. Leoni ^1,2,*, B. Fornal ^3,†, T. Suzuki^4,5, T. Otsuka^6,7, A. Maj³, P. Bednarczyk³ et al.

G. Benzoni², A. Bracco^1,2, C. Boiano², S. Bottoni^1,2, S. Brambilla², M. Bast⁸, M. Beckers⁸, T. Braunroth⁸, F. Camera^1,2, N. Cieplicka-Oryńczak³, E. Clément⁹, S. Coelli², O. Dorvaux¹⁰, S. Erturk¹¹, G. de France⁹, C. Fransen⁸, A. Goldkuhle⁸, J. Grębosz³, M. N. Harakeh¹², Ł. W. Iskra^2,3, B. Jacquot⁹, A. Karpov¹³, M. Kicińska-Habior¹⁴, Y. Kim^9,15, M. Kmiecik³, A. Lemasson⁹, S. M. Lenzi^16,17, M. Lewitowicz⁹, H. Li⁹, I. Matea¹⁸, K. Mazurek³, C. Michelagnoli¹⁵, M. Matejska-Minda^3,19, B. Million², C. Müller-Gatermann^8,20, V. Nanal²¹, P. Napiorkowski¹⁹, D. R. Napoli²², R. Palit²¹, M. Rejmund⁹, Ch. Schmitt¹⁰, M. Stanoiu²³, I. Stefan¹⁸, E. Vardaci²⁴, B. Wasilewska³, O. Wieland², M. Ziębliński³, and M. Zielińska²⁵

¹Dipartimento di Fisica, Università degli Studi di Milano, I-20133 Milano, Italy
²INFN sezione di Milano, 20133 Milano, Italy
³Institute of Nuclear Physics, PAN, 31-342 Kraków, Poland
⁴Department of Physics, College of Humanities and Sciences, Nihon University, 3-25-40 Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
⁵Division of Science, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
⁶Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
⁷RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
⁸Institut für Kernphysik, Universität zu Köln, 50937 Cologne, Germany
⁹GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, F-14076 Caen, France
¹⁰Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
¹¹Nigde Omer Halisdemir University, Science and Art Faculty, Department of Physics, Nigde, Turkey
¹²KVI–Center for Advanced Radiation Technology, Groningen, Netherlands
¹³FLNR, JINR, 141980 Dubna, Russia
¹⁴Faculty of Physics, University of Warsaw, Warsaw, Poland
¹⁵Institut Laue-Langevin (ILL), Grenoble, France
¹⁶INFN Sezione di Padova, I-35131 Padova, Italy
¹⁷Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, I-35131 Padova, Italy
¹⁸Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
¹⁹Heavy Ion Laboratory, University of Warsaw, PL 02-093 Warsaw, Poland
²⁰Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
²¹Tata Institute of Fundamental Research, Mumbai 400005, India
²²INFN Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
²³IFIN-HH, Bucharest, Romania
²⁴Università degli Studi di Napoli and INFN sez. Napoli, Italy
²⁵IRFU, CEA/DRF, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France

^*Corresponding author: Silvia.Leoni@mi.infn.it
^†Corresponding author: Bogdan.Fornal@ifj.edu.pl

PDF

Phys. Rev. C 104, L041301 – Published 11 October, 2021

DOI: https://doi.org/10.1103/PhysRevC.104.L041301

Abstract

High-resolution $γ$ -ray spectroscopy of ${}^{18}N$ is performed with the Advanced GAmma Tracking Array, following deep-inelastic processes induced by an ${}^{18}O$ beam on a ${}^{181}{Ta}$ target. Six states are newly identified, which together with the three known excitations exhaust all negative-parity excited states expected in ${}^{18}N$ below the neutron threshold. Spin and parities are proposed for all located states on the basis of decay branchings and comparison with large-scale shell-model calculations performed in the p-sd space, with the YSOX interaction. Of particular interest is the location of the $0_{1}^{-}$ and $1_{2}^{-}$ excitations, which provide strong constrains for cross-shell p-sd matrix elements based on realistic interactions and help to simultaneously reproduce the ground and first-excited states in ${}^{16}N$ and ${}^{18}N$ , for the first time. Understanding the ${}^{18}N$ structure may also have significant impact on neutron-capture cross-section calculations in r-process modeling including light neutron-rich nuclei.

Physics Subject Headings (PhySH)

Authorization Required

We need you to provide your credentials before accessing this content.

Article Available via CHORUS

Download Accepted Manuscript

Physical Review C

Export citation

Export citation

Complete set of bound negative-parity states in the neutron-rich nucleus ${}^{18}N$

Abstract

Physics Subject Headings (PhySH)

Authorization Required

Other Options

References (Subscription Required)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation

Complete set of bound negative-parity states in the neutron-rich nucleus N18

Abstract

Physics Subject Headings (PhySH)

Authorization Required

Log in via your institution

Log in via APS Member Subscription

Other Options

References (Subscription Required)

Complete set of bound negative-parity states in the neutron-rich nucleus ${}^{18}N$