Zobrazeno 1 - 10
of 34
pro vyhledávání: '"A. T. Barfknecht"'
Autor:
Matthias Frank, Stephen P. Cramer, Stephan Friedrich, M. Cunningham, Simon E. Labov, A. T. Barfknecht
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 444:151-155
We are developing superconducting tunnel junction (STJ) X-ray spectrometers with high-energy resolution ( 10 000 counts/s). We have examined the influence of Fiske mode resonances on energy resolution, maximum count rate and area of Nb–Al–AlOx–
Autor:
J. B. Le Grand, A. T. Barfknecht, M. Frank, Stephen P. Cramer, Simon E. Labov, L. J. Hiller, J. Kipp, Stephan Friedrich
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 9:3330-3333
Superconducting tunnel junctions (STJs) can be used as high-resolution high-count rate photon detectors. They are based on the measurement of the excess quasiparticle tunneling current caused by the absorption of a photon in one of the junction elect
Autor:
L. J. Hiller, C. A. Mears, M. LeGros, Stephan Friedrich, B. Nideröst, J. B. Le Grand, Simon E. Labov, A. T. Barfknecht, Matthias Frank, Stephen P. Cramer
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. :891-896
Superconducting tunnel junctions (STJs) can be used as high-resolution energy-dispersive X-ray detectors. STJ detectors are based on the measurement of an increased tunneling current from excess charge carriers that are excited above the superconduct
Autor:
C. A. Mears, B. Nideröst, L. J. Hiller, Stephan Friedrich, Simon E. Labov, Stephen P. Cramer, Matthias Frank, A. T. Barfknecht
Publikováno v:
Microscopy and Microanalysis. 4:616-621
Cryogenic energy-dispersive X-ray detectors are being developed because of their superior energy resolution (10 eV FWHM for keV X-rays) compared to that achieved in semiconductor energy-dispersive spectrometry (EDS) systems. So far, their range of ap
Autor:
A. T. Barfknecht, Mark A. Lindeman, J. B. Le Grand, C. A. Mears, L. J. Hiller, Matthias Frank, Daniel Chow, Simon E. Labov, H. Netel
Publikováno v:
Review of Scientific Instruments. 69:25-31
We present experimental results obtained with a cryogenically cooled, high-resolution x-ray spectrometer based on a 141 μm×141 μm Nb-Al-Al2O3-Al-Nb superconducting tunnel junction (STJ) detector in a demonstration experiment. Using monochromatized
Autor:
C. A. Mears, H. Netel, Mark A. Lindeman, L. J. Hiller, Simon E. Labov, Daniel Chow, Matthias Frank, A. T. Barfknecht
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 7:3415-3418
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 quasipartic
Autor:
C. A. Mears, Joseph M. Jaklevic, Simon E. Labov, D. Horn, A. T. Barfknecht, Matthias Frank, W. H. Benner
Publikováno v:
Rapid Communications in Mass Spectrometry. 10:1946-1950
Autor:
Mark A. Lindeman, H. Netel, A. T. Barfknecht, C. A. Mears, Matthias Frank, Simon E. Labov, L. J. Hiller
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 370:53-56
Superconducting-insulating-superconducting (SIS) tunnel junctions coupled to superconducting absorbers may be used as high-resolution, high-efficiency X-ray spectrometers. Until recently, the X-ray-induced current pulse from such devices has been mea
Autor:
H. Netel, Simon E. Labov, F. Azgui, C. A. Mears, Matthias Frank, A. T. Barfknecht, L.H. Hiller
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 5:3034-3037
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 t
Autor:
A. T. Barfknecht, L.H. Hiller, H. Netel, Simon E. Labov, Matthias Frank, F. Azgui, C. A. Mears
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 5:3069-3072
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 quasipartic