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Structure of high-lying levels populated in the 96Y →96Zr β decay

Publication ,  Journal Article
Mashtakov, KR; Ponomarev, VY; Scheck, M; Finch, SW; Isaak, J; Zweidinger, M; Agar, O; Bathia, C; Beck, T; Beller, J; Bowry, M; Chapman, R ...
Published in: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
September 10, 2021

The nature of the high-lying final levels of the 96Ygs β decay, one of the three most important contributors to the high-energy reactor antineutrino spectrum, has been investigated in high-resolution γ-ray spectroscopy following the β decay as well as in a campaign of inelastic photon scattering experiments. The comprehensive approach establishes 1− levels associated with the Pygmy Dipole Resonance as high-lying final levels in the β decay. Branching ratios extracted from β 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 Qβ value, which are investigated in the Quasiparticle Phonon Model. The calculations reveal that the components populated in β decay contribute only with small amplitudes to the complex wavefunction of these 1− levels. A comparison of the β decay results to data from total absorption γ-ray spectroscopy demonstrates a good agreement between both measurements.

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Published In

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

DOI

ISSN

0370-2693

Publication Date

September 10, 2021

Volume

820

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
  • 0105 Mathematical Physics
 

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Mashtakov, K. R., Ponomarev, V. Y., Scheck, M., Finch, S. W., Isaak, J., Zweidinger, M., … Tornow, W. (2021). Structure of high-lying levels populated in the 96Y →96Zr β decay. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 820. https://doi.org/10.1016/j.physletb.2021.136569
Mashtakov, K. R., V. Y. Ponomarev, M. Scheck, S. W. Finch, J. Isaak, M. Zweidinger, O. Agar, et al. “Structure of high-lying levels populated in the 96Y →96Zr β decay.” Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 820 (September 10, 2021). https://doi.org/10.1016/j.physletb.2021.136569.
Mashtakov KR, Ponomarev VY, Scheck M, Finch SW, Isaak J, Zweidinger M, et al. Structure of high-lying levels populated in the 96Y →96Zr β decay. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2021 Sep 10;820.
Mashtakov, K. R., et al. “Structure of high-lying levels populated in the 96Y →96Zr β decay.” Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 820, Sept. 2021. Scopus, doi:10.1016/j.physletb.2021.136569.
Mashtakov KR, Ponomarev VY, Scheck M, Finch SW, Isaak J, Zweidinger M, Agar O, Bathia C, Beck T, Beller J, Bowry M, Chapman R, Chishti MMR, Friman-Gayer U, Gaffney LP, Garrett PE, Gregor ET, Keatings JM, Köster U, Löher B, MacLean AD, O’Donnell D, Pai H, Pietralla N, Rainovski G, Ramdhane M, Romig C, Rusev G, Savran D, Simpson GS, Sinclair J, Sonnabend K, Spagnoletti P, Tonchev AP, Tornow W. Structure of high-lying levels populated in the 96Y →96Zr β decay. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2021 Sep 10;820.
Journal cover image

Published In

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

DOI

ISSN

0370-2693

Publication Date

September 10, 2021

Volume

820

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
  • 0105 Mathematical Physics