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  • 1995-1999  (3)
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Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Windows and photocathodes for a high resolution solid state bandpass ultraviolet photon detector for inverse photoemission (1997)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 41-46 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We have measured the absolute quantum yield for alkali halides and the spectral transmission for alkaline earth fluoride windows to find an optimized bandpass combination for a solid state ultraviolet (UV) photon detector for inverse photoemission. The best resolution achieved is 0.33 eV (full width at half-maximum), being obtained with the NaCl photocathode–BaF2 window combination. This, however, leads to a rather low quantum efficiency of 0.3%. The combination NaCl–SrF2 chosen for our detector offers a resolution of 0.42 eV (full width at half-maximum) with a maximum quantum efficiency of 2.5% at 9.50 eV photon energy. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147844
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Performance of the soft x-ray double crystal monochromator on beamline 4.2 at the SRS, Daresbury Laboratory : Proceedings of the 5th international conference on synchrotron radiation instrumentation (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 1762-1764 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The performance of a new beamline, designated BL4.2, at the SRS, Daresbury Laboratory is described. This beamline covers the energy range 640≥hν≥10 keV, using a double crystal monochromator. The performance of the beamline is illustrated by reference to two S K-edge studies. One is a near edge x-ray absorption fine structure (NEXAFS) study of thiophenecarboxylate (C4H3SCO−2) on Cu(110); the second is a surface extended x-ray absorption fine structure (SEXAFS) study of Ni(110)c(2×2)S. A resolution of ≤1 eV (FWHM) at a photon energy of 2470 eV is indicated by the NEXAFS data, which is sufficient to resolve the two leading resonances associated with the thiophene ring. The SEXAFS data extend to a k range of 13 A(ring)−1, which corresponds to a photon energy range of 650 eV. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1145843
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Performance of the VUV beamline 4.1 at the SRS, Daresbury Laboratory (1998)
    Chester : International Union of Crystallography (IUCr)
    Journal of synchrotron radiation 5 (1998), S. 569-571 
    Details
    ISSN: 1600-5775
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The performance of a recently commissioned beamline, designated BL4.1, at the SRS, Daresbury Laboratory, is described. This beamline covers the energy range 15 ≥ hυ ≥ 200 eV, using a spherical grating monochromator, and is equipped with a UHV surface-science endstation containing a Scienta SES200 and an HA54 angle-resolving electron-energy analyser. Design parameters and optical specifications are tabulated. Monochromator resolution has been determined by measuring the Fermi edge of a Pt foil cooled to 40 K and these values are compared with the calculated resolution. The flux delivered to the endstation has been measured directly using a calibrated photodiode. The performance of the beamline is further illustrated by reference to a study of the angular distribution of photoemitted intensity from a band-gap state on a TiO2(110) 1 × 2 surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S090904959701296X
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    Paper (German National Licenses)
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