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Phys. Rev. C 78, 064317 (2008) [7 pages]

Electron-capture branch of 100Tc and tests of nuclear wave functions for double-β decays

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S. K. L. Sjue1, D. Melconian2, A. García1, I. Ahmad3, A. Algora4,5, J. Äystö6, V.-V. Elomaa6, T. Eronen6, J. Hakala6, S. Hoedl1, A. Kankainen6, T. Kessler6, I. D. Moore6, F. Naab7, H. Penttilä6, S. Rahaman6, A. Saastamoinen6, H. E. Swanson1, C. Weber6, S. Triambak1, and K. Deryckx1
1Physics Department, University of Washington, Seattle, Washington 98195, USA
2Physics Department, Texas A&M University, College Station, Texas 77843, USA
3Argonne National Laboratory, Argonne, Illinois 60439, USA
4Instituto de Fisica Corpuscular, University of Valencia, Valencia, Spain
5Institute of Nuclear Research, Hungarian Academy of Sciences, Debrecen, Hungary
6Department of Physics, University of Jyväskylä, Jyväskylä, Finland
7Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA

Received 22 September 2008; published 30 December 2008

We present a measurement of the electron-capture branch of 100Tc. Our value, B(EC)=(2.6±0.4)×10-5, implies that the 100Mo neutrino absorption cross section to the ground state of 100Tc is roughly 50% larger than previously thought. Disagreement between the experimental value and QRPA calculations relevant to double-β decay matrix elements persists. We find agreement with previous measurements of the 539.5- and 590.8-keV γ-ray intensities.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.78.064317
DOI:
10.1103/PhysRevC.78.064317
PACS:
23.40.Hc, 27.60.+j
 
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