The 71Ga( 3He,t) reaction and the low-energy neutrino response


Frekers D., Ejiri H., Akimune H., Adachi T., Bilgier B. , Brown B. A. , ...Daha Fazla

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, cilt.706, ss.134-138, 2011 (SCI Expanded İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 706
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.physletb.2011.10.061
  • Dergi Adı: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
  • Sayfa Sayıları: ss.134-138

Özet

A Ga-71(He-3,t)Ge-71 charge-exchange experiment was performed to extract with high precision the Gamow-Teller (GT) transition strengths to the three lowest-lying states in Ge-71, i.e., the ground state (1/2(-)), the 175 keV (5/2(-)) and the 500 key (3/2(-)) excited states. These are the relevant states, which are populated via a charged-current reaction induced by neutrinos from reactor-produced Cr-51 and Ar-37 sources. A precise measurement of the GT transition strengths is an important input into the calibration of the SAGE and GALLEX solar neutrino detectors and addresses a long-standing discrepancy between the measured and evaluated capture rates from the Cr-51 and Ar-37 neutrino calibration sources, which has recently spawned new ideas about unconventional neutrino properties. (C) 2011 Elsevier B.V. All rights reserved.