Abstract
Superconducting tunnel junctions coupled to superconducting absorbers may be used as high-resolution high-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 um × 282 (im 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 rays. The area of this junction is eight times the area of any junction previously measured to have such high energy resolution.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3415-3418 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 7 |
| Issue number | 2 PART 3 |
| State | Published - Dec 1 1997 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
Cite this
High-resolution superconducting x-ray spectrometers with an active area of 282 pm × 282 μm. / Mears, C. A.; Labov, Simon E.; Frank, Matthias; Netel, H.
In: IEEE Transactions on Applied Superconductivity, Vol. 7, No. 2 PART 3, 01.12.1997, p. 3415-3418.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - High-resolution superconducting x-ray spectrometers with an active area of 282 pm × 282 μm
AU - Mears, C. A.
AU - Labov, Simon E.
AU - Frank, Matthias
AU - Netel, H.
PY - 1997/12/1
Y1 - 1997/12/1
N2 - Superconducting tunnel junctions coupled to superconducting absorbers may be used as high-resolution high-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 um × 282 (im 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 rays. The area of this junction is eight times the area of any junction previously measured to have such high energy resolution.
AB - Superconducting tunnel junctions coupled to superconducting absorbers may be used as high-resolution high-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 um × 282 (im 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 rays. The area of this junction is eight times the area of any junction previously measured to have such high energy resolution.
UR - http://www.scopus.com/inward/record.url?scp=0031163348&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031163348&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0031163348
VL - 7
SP - 3415
EP - 3418
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 2 PART 3
ER -