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Evolution from spherical single-particle structure to stable triaxiality at high spins in Nd140

  • Author(s): Petrache, CM;
  • Fantuzi, M;
  • Lobianco, G;
  • Mengoni, D;
  • Neusser-Neffgen, A;
  • Hübel, H;
  • Al-Khatib, A;
  • Bringel, P;
  • Bürger, A;
  • Nenoff, N;
  • Schönwasser, G;
  • Singh, AK;
  • Ragnarsson, I;
  • Hagemann, GB;
  • Herskind, B;
  • Jensen, DR;
  • Sletten, G;
  • Fallon, P;
  • Görgen, A;
  • Bednarczyk, P;
  • Curien, D;
  • Gangopadhyay, G;
  • Korichi, A;
  • Lopez-Martens, A;
  • Rao, BVT;
  • Reddy, TS;
  • Singh, N
  • et al.
Abstract

The level structure of 60140Nd80 has been established up to spin 48 by in-beam γ-ray spectroscopy by use of the Zr96(Ca48, 4n) reaction. High-fold γ-ray coincidences were measured with the EUROBALL spectrometer. Twelve new rotational bands have been discovered at high spins. They are interpreted as being formed in a deep triaxial minimum at 2 0.25 and γ 35°. Possible configurations are assigned to the observed bands on the basis of configuration-dependent cranked Nilsson-Strutinsky calculations. © 2005 The American Physical Society.

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