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Coupling a Proton and a Neutron to the Semidoubly Magic Nucleus Ni-68: A Study of Cu-70 via the Beta Decay of Ni-70 and Cu-70

Van Roosbroeck, J; Cederkäll, Joakim LU and the IS365 and ISOLDE Collaborations, and (2004) In Physical Review C: covering nuclear physics 69.
Abstract
The 70Ni nucleus has been produced at the LISOL facility and its beta decay to 70Cu has been observed. In parallel, the 70Cu nucleus has been produced at the ISOLDE facility. A new third beta-decaying isomeric state in 70Cu has been identified, partly with the aid of the in-source laser spectroscopy method. Its measured half-life is T1/2=33(2) s. In addition, two isomeric transitions in 70Cu have been observed at energies of 101.1(3) and 141.3(3) keV, and it allowed the relative placement of the three 70Cu isomeric states and their tentative spin and parity assignments. The new 70Cu isomer was found to be weakly populated in the beta decay of 70Ni. It allowed the construction of the 70Ni decay scheme. Furthermore, the beta decay of the... (More)
The 70Ni nucleus has been produced at the LISOL facility and its beta decay to 70Cu has been observed. In parallel, the 70Cu nucleus has been produced at the ISOLDE facility. A new third beta-decaying isomeric state in 70Cu has been identified, partly with the aid of the in-source laser spectroscopy method. Its measured half-life is T1/2=33(2) s. In addition, two isomeric transitions in 70Cu have been observed at energies of 101.1(3) and 141.3(3) keV, and it allowed the relative placement of the three 70Cu isomeric states and their tentative spin and parity assignments. The new 70Cu isomer was found to be weakly populated in the beta decay of 70Ni. It allowed the construction of the 70Ni decay scheme. Furthermore, the beta decay of the three 70Cu isomers to 70Zn has been measured and their decay schemes are presented. The 70Ni beta decay to the isomeric states in 70Cu and their subsequent isomeric decay and beta decay to 70Zn are discussed within the extreme shell-model picture of two valence nucleons outside the semidouble magic <sub>28</sub><sup>68</sup>Ni40 core and it yields satisfactory results. Large-basis shell-model calculations using <sub>28</sub><sup>56</sup>Ni28 as the core and a realistic effective interaction support rather well the suggested interpretation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C: covering nuclear physics
volume
69
publisher
American Physical Society
external identifiers
  • Scopus:2442602539
DOI
10.1103/PhysRevC.69.034313
language
English
LU publication?
yes
id
a1ef73a5-d994-4674-9164-eaabf5a5a699 (old id 707448)
date added to LUP
2007-12-07 13:58:00
date last changed
2016-10-13 04:38:48
@misc{a1ef73a5-d994-4674-9164-eaabf5a5a699,
  abstract     = {The 70Ni nucleus has been produced at the LISOL facility and its beta decay to 70Cu has been observed. In parallel, the 70Cu nucleus has been produced at the ISOLDE facility. A new third beta-decaying isomeric state in 70Cu has been identified, partly with the aid of the in-source laser spectroscopy method. Its measured half-life is T1/2=33(2) s. In addition, two isomeric transitions in 70Cu have been observed at energies of 101.1(3) and 141.3(3) keV, and it allowed the relative placement of the three 70Cu isomeric states and their tentative spin and parity assignments. The new 70Cu isomer was found to be weakly populated in the beta decay of 70Ni. It allowed the construction of the 70Ni decay scheme. Furthermore, the beta decay of the three 70Cu isomers to 70Zn has been measured and their decay schemes are presented. The 70Ni beta decay to the isomeric states in 70Cu and their subsequent isomeric decay and beta decay to 70Zn are discussed within the extreme shell-model picture of two valence nucleons outside the semidouble magic &lt;sub&gt;28&lt;/sub&gt;&lt;sup&gt;68&lt;/sup&gt;Ni40 core and it yields satisfactory results. Large-basis shell-model calculations using &lt;sub&gt;28&lt;/sub&gt;&lt;sup&gt;56&lt;/sup&gt;Ni28 as the core and a realistic effective interaction support rather well the suggested interpretation.},
  author       = {Van Roosbroeck, J and Cederkäll, Joakim and the IS365 and ISOLDE Collaborations, and},
  language     = {eng},
  publisher    = {ARRAY(0xa6f8560)},
  series       = {	Physical Review C: covering nuclear physics},
  title        = {Coupling a Proton and a Neutron to the Semidoubly Magic Nucleus Ni-68: A Study of Cu-70 via the Beta Decay of Ni-70 and Cu-70},
  url          = {http://dx.doi.org/10.1103/PhysRevC.69.034313},
  volume       = {69},
  year         = {2004},
}