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Alpha-gamma decay studies of 255No

  • F. P. Heßberger
  • S. Hofmann
  • D. Ackermann
  • S. Antalic
  • B. Kindler
  • I. Kojouharov
  • P. Kuusiniemi
  • M. Leino
  • B. Lommel
  • R. Mann
  • K. Nishio
  • A. G. Popeko
  • B. Sulignano
  • S. Saro
  • B. Streicher
  • M. Venhart
  • A. V. Yeremin
Nuclear Structure and Reactions

Abstract.

The decay of 255No was investigated by means of α-γ spectroscopy. The isotope was produced in the reactions 208Pb(48Ca, n)255No, \(\mathrm{{}^{209}Bi({}^{48}Ca,2n){}^{255}Lr \ {}^{\ensuremath \mathit{EC}}_{\rightarrow}\ {}^{255}No}\), and $238U(22Ne, 5n)255No$. Levels of the daughter nucleus 251Fm were assigned by α-γ coincidence measurements and on the basis of systematics. Level energies were determined precisely using measured γ-rays. The results are compared with the known level schemes of the lighter \(\ensuremath N=151\) isotones 247Cm and 249Cf as well as with data for 253No.

PACS.

23.60.+e Alpha decay 27.90.+b \(\ensuremath 220\leq A\) 21.10.-k Properties of nuclei; nuclear energy levels 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2006

Authors and Affiliations

  • F. P. Heßberger
    • 1
  • S. Hofmann
    • 1
    • 2
  • D. Ackermann
    • 1
  • S. Antalic
    • 3
  • B. Kindler
    • 1
  • I. Kojouharov
    • 1
  • P. Kuusiniemi
    • 1
  • M. Leino
    • 4
  • B. Lommel
    • 1
  • R. Mann
    • 1
  • K. Nishio
    • 5
    • 1
  • A. G. Popeko
    • 6
  • B. Sulignano
    • 1
    • 7
  • 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 PhysicsComenius University BratislavaBratislavaSlovakia
  4. 4.Department of PhysicsUniversity of JyväskyläJyväskyläFinland
  5. 5.Japan Atomic Energy Agency (JAEA)IbarakiJapan
  6. 6.Flerov Laboratory of Nuclear ReactionsJINRDubnaRussia
  7. 7.Institut für PhysikJohannes Gutenberg-UniversitätMainzGermany

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