Abstract
Thin film structures incorporating metallic superconducting layers and tunnel junctions can be configured as low-energy X-ray spectrometers. We present results obtained when low-energy X-rays are absorbed in niobium films coupled to aluminum layers that serve as quasiparticle traps in an Nb/Al/Al2O3/Al/Nb tunnel junction X-ray detector. The linearity of the pulse height as a function of energy is discussed along with the energy dependence of the observed resolution and its relation to the broadening mechanisms. A resolution of 14 eV at 1 keV has been measured with our detector cooled to 03 K.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3034-3037 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 5 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 1 1995 |
| Externally published | Yes |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Physics and Astronomy (miscellaneous)
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Labov, S. E., Hiller, L. H., Mears, C. A., Frank, M., Netel, H., Azgui, F., & Barfknecht, A. T. (1995). Low-Energy Response of Superconducting Tunnel Junction X-ray Spectrometers. IEEE Transactions on Applied Superconductivity, 5(2), 3034-3037. https://doi.org/10.1109/77.403231