1 Ocak 2021 Dergi makalesi Açık Erişim

CERN İşbirliği

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    "description": "<p>The nature of the high-lying final levels of the $^{96}$Y$_{gs}$ \u03b2 decay, one of the three most important contributors to the high-energy reactor antineutrino spectrum, has been investigated in high-resolution \u03b3-ray spectroscopy following the \u03b2 decay as well as in a campaign of inelastic photon scattering experiments. The comprehensive approach establishes 1$^{\u2212}$ levels associated with the Pygmy Dipole Resonance as high-lying final levels in the \u03b2 decay. Branching ratios extracted from \u03b2 decay complement photon scattering and allow the absolute E1 excitation strength to be determined for levels populated in both reactions. The combined data represents a comprehensive approach to the wavefunction of the ${1}^{-}$ levels below the ${Q}_{\\beta }$ value, which are investigated in the Quasiparticle Phonon Model. The calculations reveal that the components populated in \u03b2 decay contribute only with small amplitudes to the complex wavefunction of these 1$^{\u2212}$ levels. A comparison of the \u03b2 decay results to data from total absorption \u03b3-ray spectroscopy demonstrates a good agreement between both measurements.</p>", 
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      "title": "Physics Letters B", 
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    "title": "Structure of high-lying levels populated in the Y \u2192 Zr Decay"
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