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NUSTAR-EXPERIMENTS-07 Identification of a 10 + Isomer in 54 Ni: Proton Decay ‘in the Mirror ’ (S244)

By D. Rudolph, R. Hoischen, M. Hellström, 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, I. Kojouharov, N. Kurz, W. Prokopowicz, H. Schaffner, H. J. Wollersheim, L. -l. Andersson, L. Atanasova, D. L. Balabanski, M. A. Bentley, A. Blazhev, C. Br, J. R. Brown, C. Fahl, E. K. Johansson and A. Jungclaus

Abstract

Studies of isospin symmetry by means of γ-ray spectroscopic methods of isobaric analogue states has made significant progress during the past decade — the description of so-called mirror-energy difference (MED) has moved forward from a qualitative to a quantitative understanding [1, 2]. The different spatial distributions of the protons in the respective mirror states give rise to isospin breaking Coulomb effects and nuclear components [3, 4], which allows for subtle nuclear structure investigations on the basis of modern large-scale shell-model calculations [5]. Experimentally, these advances are mainly linked to 4π Gedetector instruments in conjunction with ancillary systems. Lately, these combinations pushed for isospin Tz = ±1 or Tz = ±3/2 mirror systems [1] and electromagnetic decay properties; for example, isoscalar and isovector effectiv

Year: 2010
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