Author/Authors :
Angloher، نويسنده , , G and Beckhoff، نويسنده , , B and Bühler، نويسنده , , M and Feilitzsch، نويسنده , , F.v and Hertrich، نويسنده , , T and Hettl، نويسنده , , P and Hِhne، نويسنده , , J and Huber، نويسنده , , M and Jochum، نويسنده , , F.v. and Mِكbauer، نويسنده , , R.L and Schnagl، نويسنده , , J and Scholze، نويسنده , , F and Ulm، نويسنده , , G، نويسنده ,
Abstract :
The energy resolution of aluminum superconducting tunnel junctions (Al-STJs) has been improved by the introduction of a metallic buffer layer underneath the junction. When irradiated by 5.9 keV X-rays, a resolution of 12 eV (FWHM) was achieved for a junction size of 100×100 μm2. A mobile refrigerator system allowed to characterize these devices at the PTB-beamlines of the electron storage rings Bessy I and Bessy II. They showed linear energy response in the range between 200 eV and 6.5 keV and a strong increase in reduced energy events if irradiated at X-ray energies below the Al absorption edge at 1.56 keV.
