Measurements of the linearity of an STJ and position resolution of series-connected STJs

Details Measurements of the linearity of an STJ and position resolution of series-connected STJs Measurements of the linearity of an STJ and position resolution of series-connected STJs

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999nimpa.436..243y&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 436, Issue 1-2, p. 243-246.

Physics

1

Scientific paper

Superconducting tunnel junctions (STJ) have been developed mainly at high-resolution spectrometers for use in X-ray astronomy. A FWHM energy resolution of 112 eV at 5.9 keV is obtained using an STJ developed at Nippon Steel Corporation connected with a cooled FET (/~100 K). The pulse height of the signal is represented by a logarithmic function of energy based on consideration of the recombination of the quasi-particles in the junction. Experiments using series-connected STJs for an imaging radiation detector are performed. Both the pulse height and the rise time of signals from 241Am /α-particles indicate good position sensitivity with resolution less than 0.5 mm.

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