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The European Physical Journal A

, Volume 33, Issue 4, pp 327–331 | Cite as

Identification of a K isomer in 252No

  • B. Sulignano
  • S. Heinz
  • F. P. Heßberger
  • S. Hofmann
  • D. Ackermann
  • S. Antalic
  • B. Kindler
  • I. Kojouharov
  • P. Kuusiniemi
  • B. Lommel
  • R. Mann
  • K. Nishio
  • A. G. Popeko
  • S. Saro
  • B. Streicher
  • M. Venhart
  • A. V. Yeremin
Regular Article - Experimental Physics

Abstract.

A K isomer with a half-life of (110±10) ms at an excitation energy of 1254keV has been identified in the nucleus 252No . The isomer is interpreted as a two-quasineutron state with K π = 8- . The isotope 252No was produced in the fusion-evaporation reaction 206Pb(48Ca, 2n)252No . The experiment has been performed at the velocity filter SHIP of GSI Darmstadt.

PACS.

29.30.Kv X- and γ -ray spectroscopy 27.90.+b 220 ⩽ A 23.20.Lv γ transitions and level energies 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • B. Sulignano
    • 1
  • S. Heinz
    • 1
  • F. P. Heßberger
    • 1
  • S. Hofmann
    • 1
    • 2
  • D. Ackermann
    • 1
  • S. Antalic
    • 3
  • B. Kindler
    • 1
  • I. Kojouharov
    • 1
  • P. Kuusiniemi
    • 4
  • B. Lommel
    • 1
  • R. Mann
    • 1
  • K. Nishio
    • 5
  • A. G. Popeko
    • 6
  • S. Saro
    • 3
  • B. Streicher
    • 3
  • M. Venhart
    • 3
  • A. V. Yeremin
    • 6
  1. 1.Gesellschaft für Schwerionenforschung (GSI)DarmstadtGermany
  2. 2.Institut für PhysikJohann Wolfgang Goethe-Universität FrankfurtFrankfurtGermany
  3. 3.Department of Nuclear Physics and BiophysicsComenius University BratislavaBratislavaSlovakia
  4. 4.CUPPUniversity of OuluOuluFinland
  5. 5.Japan Atomic Energy Agency (JAEA)Tokai,IbarakiJapan
  6. 6.Flerov Laboratory of Nuclear Reactions, JINRDubnaRussia

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