Title of article
Photon energy dependence of spatial non-uniformity in super-conducting tunnel junction detectors between 200 ev and 10 keV
Author/Authors
Ohkubo، نويسنده , , M. and Ukibe، نويسنده , , M. and Zama، نويسنده , , T. and Ikeuchi، نويسنده , , T. and Katagiri، نويسنده , , M. and Ichimura، نويسنده , , S.، نويسنده ,
Pages
3
From page
231
To page
233
Abstract
It has been demonstrated by Low-Temperature Scanning Synchrotron Microscope that the spatial profiles of Nb/Al/AlOx/Al/Nb detectors are abnormally large in an energy range between 2 and 10 keV, and thus the detectors produce no clear total absorption peaks. Below 2 keV, on the other hand, full illumination experiments have afforded the evidence that the spatial uniformity is significantly improved, for example, an 100 μm square junction has an intrinsic energy resolution of 5.4 eV at 200 eV. These results reconfirm that carefully designed junction detectors with a reasonable size are ideal for energy-dispersive spectroscopy in a soft X-ray range.
Keywords
X-ray spectroscopy , Superconducting tunnel junction , Synchrotron radiation , Spatial profile
Journal title
Astroparticle Physics
Record number
2022880
Link To Document