Ponente
Descripción
In this contribution we will present the study of beta decays of interest for reactor antineutrino
spectrum calculations using the Total absorption gamma-ray spectroscopy (TAGS). Measurements
of the beta decays of several fission fragments including 103,108Tc, 103,108Mo and 95,96Sr were done at
the Ion Guide Isotope Separator On-Line facility in Jyväskylä [1] using the Decay Total Absorption
gamma-ray Spectrometer (DTAS) [2].
The complete beta intensity distributions have been obtained based on the analysis approach
developed at IFIC [3, 4, 5] and they show that previous beta intensities determined with germanium
detectors were incomplete due to the Pandemonium effect [6]. In the present contribution we will
stress the usefulness of a segmented spectrometer to evaluate the consistency of the results looking
at the spectra with multiplicity conditions.
[1] I. D. Moore et al., Nucl. Instrum. Methods Phys. Res., Sect. B 317, 208 (2013)
[2] J. L. Tain et al., Nucl. Instrum. Methods Phys. Res., Sect. A 803, 36 (2015)
[3] D. Cano-Ott et al., Nucl. Instrum. Methods Phys. Res., Sect. A 430, 333 (1999)
[4] J. L. Tain and D. Cano-Ott, Nucl. Instrum. Methods Phys. Res., Sect. A 571, 728 (2007)
[5] J. L. Tain and D. Cano-Ott, Nucl. Instrum. Methods Phys. Res., Sect. A 571, 719 (2007)
[6] J. Hardy et al., Phys. Lett. B 71, 307 (1977)
