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High-Resolution Superconducting X-Ray Spectrometers With an Active Area of 282 ~ m x 282 pm
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mears, Carl Atherton Labov, Simon Frank, Matthias Netel, Harrie Hiller, Lawrence Lindeman Chow, Daniel Barfknecht, Andrew T. |
| Copyright Year | 1997 |
| Abstract | Superconducting tunnel junctions coupled to superconducting absorbers may be used as bigb-resolution, bigb-efficiency X-ray spectrometers. We have tested devices with niobium X ray absorbing layers coupled to aluminum layers that serve as quasiparticle traps. In this work we measure the current pulses from a large-area tunnel junction using an amplifier based on an array of 100 SQUIDS. Using this amplifier and a 282 ym x 282 Lm junction, we have measured an energy resolution of 19 eV FWHM for 1.5 keV X rays and 21 eV for 2.6 keV X raw. The area of this junction is eight t i mes the area “of any junction previously measured t o have such bigb energy resolution. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://digital.library.unt.edu/ark:/67531/metadc709480/m2/1/high_res_d/647023.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
