Cryogenic detectors operated at temperatures below 1 K offer an order of magnitude higher
energy resolution than conventional semiconductor-based energy-dispersive detectors, and …

We present an experimental study of the time scales for various quasiparticle processes in a
superconducting single photon spectrometer. Processes studied include quasiparticle …

We are developing new Ta-based superconducting tunnel junction (STJ) X-ray detectors for
high-resolution soft X-ray spectroscopy at synchrotrons. STJ detectors combine the high …

We present measurements of the energy resolution of improved single-photon imaging x-ray
spectrometers based on superconducting tunnel junctions. The devices have a Ta film …

Superconducting tunnel junctions (STJs) are excellent soft x-ray (100–2000 eV) detectors,
particularly for synchrotron applications, because of their ability to obtain energy resolutions …

A cryogenic superconducting tunnel junction (STJ) detector device was characterized and
evaluated. It consists of an Nb/Al/AlOx/Al/Nb layered structure and contains four STJs with …

We present a full theoretical and experimental study of the dynamics and energy distribution
of nonequilibrium quasiparticles in superconducting tunnel junctions (STJ's). STJ's are often …

We are developing a cryogen-free Ta-based superconducting tunnel junction (STJ) detector
for soft X-ray spectroscopy at synchrotrons. With an energy resolution 10 times higher than …

Superconducting tunnel junctions (STJs) can be used as high-resolution high-count rate
photon detectors. They are based on the measurement of the excess quasiparticle tunneling …

The performance of an energy sensitive, niobium superconducting tunnel junction (STJ)
detector is investigated by measuring the pulse height produced by impacting molecular and …