We are developing cryogenic detectors based on Ir/Au phase transition therm
ometers and superconducting aluminium tunnel junctions for different applic
ations, where a high-energy resolution and a low detection threshold is req
uired. These applications comprise low background experiments such as CRESS
T and GNO as well as high-energy resolution X-ray spectroscopy for astrophy
sics and fluorescence analysis where energy resolutions below 30 eV (FWHM)
at 5.89 keV were achieved. (C) 2000 Elsevier Science B.V. All rights reserv
ed.