Messung von zwei β-γ-Richtungskorrelationen im Zerfall von J¹²⁶

Abstract

In the decay of J¹²⁶ twoβ-γ directional correlations have been measured. The 0.865MeVβ-0.386 MeVγ correlation shows a big anisotropy; the reduced coefficient ɛ/(p ²/W) has a mean value of 0.0419±0.0005 and is not quite energy independent. The 0.385 MeVβ-0.86 MeVγ correlation is isotropic within about 2%. Therefore the 0.386 MeV 2⁺ state and the 0.86 MeV 2⁺ state in Xe¹²⁶ may not be described by differences in collective properties only.