Abstract

Photoneutron cross sections were measured for $^{96}\mathrm{Zr}$ near neutron threshold with quasimonochromatic laser-Compton-scattering $\ensuremath{\gamma}$-ray beams. A systematic analysis of photoneutron and radiative neutron capture data for zirconium isotopes within the statistical model calculation leads to a unified picture of low-energy $\ensuremath{\gamma}$-ray strengths for zirconium isotopes that is described by the HFB $+$ QRPA model of $E1$ strength supplemented with an extra $\ensuremath{\gamma}$ strength attributed to a giant $M1$ resonance. Results of the systematic analysis including radiative neutron capture cross sections for radioactive $^{95}\mathrm{Zr}$ and $^{93}\mathrm{Zr}$ nuclei are presented.

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