A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is
We proposed a new high resolution single photon infrared spectrometer for search for radiative decay of cosmic neutrino background(CνB). The superconducting-tunnel-junctions(STJs) are used as a single photoncounting device. Each STJ consists of Nb/Al/Al_xO_y/Al/Nb layers and their thicknesses are optimized for the operation temperature at 370 mK cooled by a ^3He sorption refrigerator. Our STJs achieved the leak current 250 pA and the measured data implies that a smaller area STJ fulfills ourarXiv:1507.07424v1 fatcat:pzexdvsia5bcdkvdzjxpo4ambm