Laser and decay spectroscopy of the short-lived isotope Fr 214 in the vicinity of the N=126 shell closure

G. J. Farooq-Smith, T. E. Cocolios, J. Billowes, M. L. Bissell, I. Budinčević, T. Day Goodacre, R. P. De Groote, V. N. Fedosseev, K. T. Flanagan, S. Franchoo, R. F. Garcia Ruiz, H. Heylen, R. Li, K. M. Lynch, B. A. Marsh, G. Neyens, R. E. Rossel, S. Rothe, H. H. Stroke, K. D A Wendt & 2 others S. G. Wilkins, X. F. Yang

    Research output: Contribution to journalArticle

    Abstract

    Combined decay and laser spectroscopy measurements of the isotope Fr214 are reported, using the collinear resonance ionization spectroscopy (CRIS) technique at the ISOLDE facility at CERN. For the Iπ=(1-) spin assignment, the g-factor value of g(Fr214)=+0.241(16) corresponds to a relatively pure (π1h9/2 - ν2g9/2) ground-state configuration. An alternative interpretation with g(Fr214)=+0.144(10), for a (2-) spin assignment suggests a greater contribution of configuration mixing with the ν1i11/2 orbital. As the N=126 shell closure is passed, a kink is observed at the δ(r2)213,214 value, which is analogous to the behavior observed in the neighboring isotopic chains.

    Original languageEnglish (US)
    Article number054305
    JournalPhysical Review C - Nuclear Physics
    Volume94
    Issue number5
    DOIs
    StatePublished - 2016

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    laser spectroscopy
    closures
    isotopes
    decay
    configurations
    spectroscopy
    ionization
    orbitals
    ground state

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    Farooq-Smith, G. J., Cocolios, T. E., Billowes, J., Bissell, M. L., Budinčević, I., Day Goodacre, T., ... Yang, X. F. (2016). Laser and decay spectroscopy of the short-lived isotope Fr 214 in the vicinity of the N=126 shell closure. Physical Review C - Nuclear Physics, 94(5), [054305]. https://doi.org/10.1103/PhysRevC.94.054305

    Laser and decay spectroscopy of the short-lived isotope Fr 214 in the vicinity of the N=126 shell closure. / Farooq-Smith, G. J.; Cocolios, T. E.; Billowes, J.; Bissell, M. L.; Budinčević, I.; Day Goodacre, T.; De Groote, R. P.; Fedosseev, V. N.; Flanagan, K. T.; Franchoo, S.; Garcia Ruiz, R. F.; Heylen, H.; Li, R.; Lynch, K. M.; Marsh, B. A.; Neyens, G.; Rossel, R. E.; Rothe, S.; Stroke, H. H.; Wendt, K. D A; Wilkins, S. G.; Yang, X. F.

    In: Physical Review C - Nuclear Physics, Vol. 94, No. 5, 054305, 2016.

    Research output: Contribution to journalArticle

    Farooq-Smith, GJ, Cocolios, TE, Billowes, J, Bissell, ML, Budinčević, I, Day Goodacre, T, De Groote, RP, Fedosseev, VN, Flanagan, KT, Franchoo, S, Garcia Ruiz, RF, Heylen, H, Li, R, Lynch, KM, Marsh, BA, Neyens, G, Rossel, RE, Rothe, S, Stroke, HH, Wendt, KDA, Wilkins, SG & Yang, XF 2016, 'Laser and decay spectroscopy of the short-lived isotope Fr 214 in the vicinity of the N=126 shell closure', Physical Review C - Nuclear Physics, vol. 94, no. 5, 054305. https://doi.org/10.1103/PhysRevC.94.054305
    Farooq-Smith, G. J. ; Cocolios, T. E. ; Billowes, J. ; Bissell, M. L. ; Budinčević, I. ; Day Goodacre, T. ; De Groote, R. P. ; Fedosseev, V. N. ; Flanagan, K. T. ; Franchoo, S. ; Garcia Ruiz, R. F. ; Heylen, H. ; Li, R. ; Lynch, K. M. ; Marsh, B. A. ; Neyens, G. ; Rossel, R. E. ; Rothe, S. ; Stroke, H. H. ; Wendt, K. D A ; Wilkins, S. G. ; Yang, X. F. / Laser and decay spectroscopy of the short-lived isotope Fr 214 in the vicinity of the N=126 shell closure. In: Physical Review C - Nuclear Physics. 2016 ; Vol. 94, No. 5.
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    abstract = "Combined decay and laser spectroscopy measurements of the isotope Fr214 are reported, using the collinear resonance ionization spectroscopy (CRIS) technique at the ISOLDE facility at CERN. For the Iπ=(1-) spin assignment, the g-factor value of g(Fr214)=+0.241(16) corresponds to a relatively pure (π1h9/2 - ν2g9/2) ground-state configuration. An alternative interpretation with g(Fr214)=+0.144(10), for a (2-) spin assignment suggests a greater contribution of configuration mixing with the ν1i11/2 orbital. As the N=126 shell closure is passed, a kink is observed at the δ(r2)213,214 value, which is analogous to the behavior observed in the neighboring isotopic chains.",
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    T1 - Laser and decay spectroscopy of the short-lived isotope Fr 214 in the vicinity of the N=126 shell closure

    AU - Farooq-Smith, G. J.

    AU - Cocolios, T. E.

    AU - Billowes, J.

    AU - Bissell, M. L.

    AU - Budinčević, I.

    AU - Day Goodacre, T.

    AU - De Groote, R. P.

    AU - Fedosseev, V. N.

    AU - Flanagan, K. T.

    AU - Franchoo, S.

    AU - Garcia Ruiz, R. F.

    AU - Heylen, H.

    AU - Li, R.

    AU - Lynch, K. M.

    AU - Marsh, B. A.

    AU - Neyens, G.

    AU - Rossel, R. E.

    AU - Rothe, S.

    AU - Stroke, H. H.

    AU - Wendt, K. D A

    AU - Wilkins, S. G.

    AU - Yang, X. F.

    PY - 2016

    Y1 - 2016

    N2 - Combined decay and laser spectroscopy measurements of the isotope Fr214 are reported, using the collinear resonance ionization spectroscopy (CRIS) technique at the ISOLDE facility at CERN. For the Iπ=(1-) spin assignment, the g-factor value of g(Fr214)=+0.241(16) corresponds to a relatively pure (π1h9/2 - ν2g9/2) ground-state configuration. An alternative interpretation with g(Fr214)=+0.144(10), for a (2-) spin assignment suggests a greater contribution of configuration mixing with the ν1i11/2 orbital. As the N=126 shell closure is passed, a kink is observed at the δ(r2)213,214 value, which is analogous to the behavior observed in the neighboring isotopic chains.

    AB - Combined decay and laser spectroscopy measurements of the isotope Fr214 are reported, using the collinear resonance ionization spectroscopy (CRIS) technique at the ISOLDE facility at CERN. For the Iπ=(1-) spin assignment, the g-factor value of g(Fr214)=+0.241(16) corresponds to a relatively pure (π1h9/2 - ν2g9/2) ground-state configuration. An alternative interpretation with g(Fr214)=+0.144(10), for a (2-) spin assignment suggests a greater contribution of configuration mixing with the ν1i11/2 orbital. As the N=126 shell closure is passed, a kink is observed at the δ(r2)213,214 value, which is analogous to the behavior observed in the neighboring isotopic chains.

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