Search for 17-keV neutrinos in 63Ni beta decay
Derbin A. V. , Egorov A. I. , Muratova V. N. , Popeko L. A. , Bakhlanov S. V. , Chernyi A. V.
The electron spectrum of 63Ni between two Si (Li) detctors is analyzed. A limitation is found on the mixing parameter: | UeH\2 < 0.0015 (at a 90% C.L.).