Isospin Symmetry and Proton Decay: Identification of the 10+ Isomer in 54Ni

Research output: Contribution to journalArticle


The gamma decays from an isomeric 10+ state at 6457 keV in the nucleus 54Ni have been identified using the GSI fragment separator in conjunction with the RISING Ge-detector array. The state is interpreted as the isobaric analog of the 6527-keV 10+ isomer in 54Fe. The results are discussed in terms of isospin-dependent shell-model calculations. Clear evidence is presented for a discrete l = 5 proton decay branch into the first excited 9/2- state of the daughter 53Co. This decay is the first of its kind observed following projectile fragmentation reactions.


  • Robert Hoischen
  • S. Pietri
  • Zs. Podolyák
  • P. H. Regan
  • A. B. Garnsworthy
  • S. J. Steer
  • F. Becker
  • P. Bednarczyk
  • L. Caceres
  • P. Doornenbal
  • J. Gerl
  • M. Górska
  • J. Grebosz
  • I. Kojouharov
  • N. Kurz
  • W. Prokopowicz
  • H. Schaffner
  • H. J. Wollersheim
  • Lise-Lotte Andersson
  • L. Atanasova
  • D. L. Balabanski
  • M. A. Bentley
  • A. Blazhev
  • C. Brandau
  • J. R. Brown
  • Emma Johansson
  • A. Jungclaus
  • S. M. Lenzi
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Article number021301(R)
JournalPhysical Review C (Nuclear Physics)
Issue number2
Publication statusPublished - 2008
Publication categoryResearch

Related research output

Molina, F., Rubio, B., Fujita, Y., Gelletly, W., Agramunt, J., Algora, A., Benlliure, J., Boutachkov, P., Cáceres, L., Cakirli, R. B., Casarejos, E., Domingo-Pardo, C., Doornenbal, P., Gadea, A., Ganioğlu, E., Gascón, M., Geissel, H., Gerl, J., Górska, M., Grȩbosz, J. & 22 othersHoischen, R., Kumar, R., Kurz, N., Kojouharov, I., Susam, L. A., Matsubara, H., Morales, A. I., Oktem, Y., Pauwels, D., Pérez-Loureiro, D., Pietri, S., Podolyák, Z., Prokopowicz, W., Dirk Rudolph, Schaffner, H., Steer, S. J., Tain, J. L., Tamii, A., Tashenov, S., Valiente-Dobón, J. J., Verma, S. & Wollersheim, H-J., 2015, In : Physical Review C (Nuclear Physics). 91, 1, 19 p., 014301.

Research output: Contribution to journalArticle

Hoischen, R., 2011, Department of Physics, Lund University. 138 p.

Research output: ThesisDoctoral Thesis (compilation)

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Related projects

Robert Hoischen, Dirk Rudolph, Pavel Golubev & J Gerl


Project: Dissertation

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