skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Toward the limit of nuclear binding on the N = Z line: Spectroscopy of Cd 96

Journal Article · · Physical Review C
 [1];  [2];  [3];  [1];  [4];  [5];  [6];  [7];  [3];  [7];  [8];  [9];  [10];  [11];  [12];  [13];  [10];  [7];  [4];  [14] more »;  [15];  [7];  [16];  [3];  [9];  [17];  [11];  [3];  [11];  [18];  [19];  [7];  [7];  [1];  [10];  [17];  [20];  [7];  [21];  [21];  [3];  [7];  [3];  [15];  [22];  [23];  [4];  [11];  [24];  [7];  [25];  [14];  [26];  [7];  [27];  [28];  [19];  [29];  [28];  [17];  [3];  [7];  [30];  [31];  [4];  [27];  [7];  [7];  [20];  [10];  [1];  [29];  [10];  [32];  [33];  [34];  [7];  [35];  [7];  [18] « less
  1. Univ. of York (United Kingdom)
  2. TRIUMF, Vancouver, BC (Canada); Univ. of British Columbia, Vancouver, BC (Canada); Lund Univ. (Sweden)
  3. GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt (Germany)
  4. Technische Univ. München, Garching (Germany)
  5. TRIUMF, Vancouver, BC (Canada); Univ. of British Columbia, Vancouver, BC (Canada)
  6. Univ. de Strasbourg (France)
  7. RIKEN Nishina Center, Saitama (Japan)
  8. Royal Inst. of Technology, Stockholm (Sweden)
  9. Centre d'Etudes Nucléaires de Bordeaux-Gradignan, Gradignan Cedex (France)
  10. Univ. zu Koln (Germany)
  11. Technische Univ. Darmstadt (Germany); GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt (Germany)
  12. RIKEN Nishina Center, Saitama (Japan); Univ. Brighton (United Kingdom)
  13. Grand Accélérateur National d'Ions Lourds (GANIL), Caen (France); Univ. of Belgrade (Serbia)
  14. Osaka Univ., Toyonaka (Japan)
  15. Grand Accélérateur National d'Ions Lourds (GANIL), Caen (France)
  16. Uppsala Univ. (Sweden)
  17. Univ. of Tokyo (Japan)
  18. Tokyo Univ. of Science, Chiba (Japan)
  19. Technische Univ. Darmstadt (Germany)
  20. Inst. de Estructura de la Materia, Madrid (Spain)
  21. Inst. for Basic Science, Daejeon (Korea)
  22. RIKEN Nishina Center, Saitama (Japan); National Physical Lab., Teddington (United Kingdom); Univ. of Surrey, Guildford (United Kingdom)
  23. Technische Univ. München, Garching (Germany); RIKEN Nishina Center, Saitama (Japan)
  24. Univ. zu Koln (Germany); RIKEN Nishina Center, Saitama (Japan)
  25. Yale Univ., New Haven, CT (United States)
  26. Tokyo City Univ. (Japan)
  27. Tohoku Univ., Sendai (Japan)
  28. RIKEN Nishina Center, Saitama (Japan); Univ. of Surrey, Guildford (United Kingdom)
  29. TRIUMF, Vancouver, BC (Canada)
  30. Univ. of York (United Kingdom); RIKEN Nishina Center, Saitama (Japan)
  31. RIKEN Nishina Center, Saitama (Japan); GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt (Germany)
  32. RIKEN Nishina Center, Saitama (Japan); Beihang Univ., Beijing (China)
  33. Technische Univ. Darmstadt (Germany); Yale Univ., New Haven, CT (United States)
  34. RIKEN Nishina Center, Saitama (Japan); Peking Univ., Beijing (China)
  35. Osaka Univ. (Japan)

A γ-decaying isomeric state (τ1/2 = $197$ $$^{+19}_{–17}$$ ns) has been identified in 96Cd, which is one α particle away from the last known bound N = Z nucleus, 100Sn. Comparison of the results with shell-model calculations has allowed a tentative experimental level scheme to be deduced and the isomer to be interpreted as a medium-spin negative-parity spin trap based on the coupling of isoscalar (T = 0) and isovector (T = 1) neutron-proton pairs. The data also suggest evidence for the population of a 9+ T = 1 state, which is predicted by shell-model calculations to be yrast. Here, such a low-lying T = 1 state, which is unknown in lighter mass even-even self-conjugate nuclei, can also be interpreted in terms of the coupling of T = 0 and T = 1 neutron-proton pairs.

Research Organization:
Yale Univ., New Haven, CT (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-91ER40609; 25247045
OSTI ID:
1610163
Alternate ID(s):
OSTI ID: 1494230
Journal Information:
Physical Review C, Vol. 99, Issue 2; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

References (35)

Nuclear Superfluidity book August 2009
Spin-aligned neutron-proton pairs in N = Z nuclei journal June 2011
Some remarks on the error analysis in the case of poor statistics journal February 1984
T = 0 and T = 1 pairing in rotational states of the N = Z nucleus 80 Zr journal March 2001
Description of rotating N = Z nuclei in terms of isovector pairing journal June 2005
The role of core excitations in the structure and decay of the 16 + spin-gap isomer in 96 Cd journal April 2017
Observation of a new high-spin isomer in Pd 94 journal December 2010
Effective interaction of protons and neutrons in the subshells journal August 1976
Shell model study of T = 0 states for Cd 96 by the nucleon-pair approximation journal August 2016
In-flight RI beam separator BigRIPS at RIKEN and elsewhere in Japan journal May 2003
Generalized seniority states with definite isospin journal April 2001
Spin-aligned neutron-proton pair mode in atomic nuclei journal August 2011
Structure of upper- g 9 / 2 -shell nuclei and shape effect in the Ag 94 isomeric states journal June 2008
Generalized seniority and structure of semi-magic nuclei journal August 1971
16 + Spin-Gap Isomer in Cd 96 journal October 2011
Observation of a core-excited E 4 isomer in Cd 98 journal June 2004
The lifetime and g -factor of the 8 + state in 96 Pd journal January 1983
High-spin states in 90Nb journal June 1981
g 9 / 2 nuclei and neutron-proton interaction journal March 2012
C 48 98 d 50 : The Two-Proton-Hole Spectrum in S 50 100 n 50 journal September 1997
Superallowed Gamow–Teller decay of the doubly magic nucleus 100Sn journal June 2012
Magnetic moments of N=48?50 nuclei and proton core polarization journal January 1978
First in-beam observation of97Ag ? The three-proton-hole spectrum in100Sn journal September 1990
Investigations of very neutron-deficient isotopes below100Sn in40Ca-induced reactions journal March 1982
Shell-model study of the N = 49 isotones journal January 1976
Installation and commissioning of EURICA – Euroball-RIKEN Cluster Array
  • Söderström, P. -A.; Nishimura, S.; Doornenbal, P.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 317 https://doi.org/10.1016/j.nimb.2013.03.018
journal December 2013
Quasideuteron configurations in odd-odd N = Z nuclei journal November 1999
Neutron–Proton Pairs in Nuclei journal November 2013
Isomeric 1 7 / 2 level and parity mixing in Tc 93 journal March 1976
High-spin isomers in 96 Ag: Excitations across the Z = 38 and Z = 50 , N = 50 closed shells journal October 2011
Overview of neutron–proton pairing journal September 2014
BigRIPS separator and ZeroDegree spectrometer at RIKEN RI Beam Factory journal January 2012
Evidence for a spin-aligned neutron–proton paired phase from the level structure of 92Pd journal December 2010
Nilsson-SU3 self-consistency in heavy N = Z nuclei journal August 2015
New Isotopes and Proton Emitters–Crossing the Drip Line in the Vicinity of Sn 100 journal April 2016