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

Author:
Frekers, D.  Ejiri, H.  Akimune, H.  Adachi, T.  Bilgier, B.  Brown, B. A.  Cleveland, B. T.  Fujita, H.  Fujita, Y.  Fujiwara, M.  Ganioglu, E.  Gavrin, V. N.  Grewe, E. -W.  Guess, C. J.  Harakeh, M. N.  Hatanaka, K.  Hodak, R.  Holl, M.  Iwamoto, C.  Khai, N. T.  Kozer, H. C.  Lennarz, A.  Okamoto, A.  Okamura, H.  Povinec, P. P.  Puppe, P.  Simkovic, F.  Susoy, G.  Suzuki, T.  Tamii, A.  Thies, J. H.  Van de Walle, J.  Zegers, R. G. T.  


Journal:
PHYSICS LETTERS B


Issue Date:
2011


Abstract(summary):

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.


Page:
134---138


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