Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    A photoemission study of the surface carbonate species on Ag{110} (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 94 (1991), S. 8592-8599 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The electronic structure of the surface carbonate species adsorbed on Ag{110} has been studied with angle-resolved photoemission using synchrotron radiation. Despite the low symmetry of the surface complex (Cs) and more than one azimuthal orientation of the vertical symmetry plane, it has been possible to assign the adsorbate-induced levels. Recent semiempirical quantum chemical calculations have proved to be of considerable assistance in this process. The resonant behavior observed for the 3a‘ level is discussed in the context of photoelectron data for the free BF3 molecule, which is isoelectronic with CO2−3. The Cs symmetry pertaining in the present experiment is compared with the effective D3h symmetry observed in x-ray-absorption spectroscopy of the same system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.460041
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 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
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Beam line 4: A dedicated surface science facility at Daresbury Laboratory : Proceedings of the 4th international conference on synchrotron radiation instrumentation (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 1342-1345 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We describe a beam line currently under construction at the Daresbury Laboratory which forms part of a surface science research facility for the Interdisciplinary Research Centre in Surface Science. The beam line has three branches, two of which are described here. The first branch covers the high-energy range 640 eV≤hν≤10 keV, being equipped with a double-crystal monochromator and a novel multicoated premirror system. The second branch line is optimized for the energy range 15≤hν≤250 eV, using cylindrical focusing mirrors, a spherical diffraction grating and an ellipsoidal refocusing mirror to achieve high resolution with a small spot size.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143065
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Compact sputter source for deposition of small size-selected clusters (1997)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 3335-3339 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We report on the development of a caesium ion sputter source for the production of small mass-selected atomic clusters. It has been designed to be compact and portable, enabling it to be attached to ultrahigh vacuum (UHV) systems for use in deposition experiments. The sputter source, developed from a high energy (∼20 keV) atomic ion beam source, has been modified by introducing a beam extraction section, resulting in a cluster beam energy of 1.5 kV. This allows mass selection to be performed with a compact Wien velocity filter, greatly reducing the dimensions of the source. The source produces sufficient intensities of small clusters (1 – 15 atoms/cluster) for UHV deposition experiments, for example, a deposition rate of 0.002 monolayers/min for Al7− focused onto a 1 cm2 area has been obtained. It is possible to produce beams of many materials, especially the noble metals and carbon. We show mass spectra for Agn −, Aln− , and Cn− clusters. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1148293
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Utilization of Photoemission Cross-Section Effects for Monitoring Thin-Film Growth in UHV (1995)
    Chester : International Union of Crystallography (IUCr)
    Journal of synchrotron radiation 2 (1995), S. 252-255 
    Details
    ISSN: 1600-5775
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Given the tunability of synchrotron radiation, photoemission spectroscopy can be used to monitor the growth modes of thin films in UHV. Cross-section effects such as Cooper minima and resonant photoemission can be exploited to maximize the adsorbate signal and minimize that from the substrate. Under favourable circumstances growth can be monitored in real time at coverages of 〈1%. As an example the growth of Gd on W(110) is investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0909049595008697
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    The electronic structure of intermetallic borocarbide and related superconductors from high energy spectroscopy (1996)
    Springer
    Journal of low temperature physics 105 (1996), S. 1617-1622 
    Details
    ISSN: 1573-7357
    Keywords: 74.25Jb ; 74.70Ad ; 79.60−i
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Photoemission has been applied to study the electronic structure of YNi2B2C and related materials, with comparison of the results with the density of states generated from band structure calculations. The absence in photoemission of the predicted peak in the density of states at the Fermi level in undoped YNi2B2C, and the inconsistency of the photoemission data with a rigid-band model for the effects of Co doping on the electronic structure of YNi2-xCoxB2C are discussed. In addition, recent photoemission data from the new superconductor La3Ni2B2N3 are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00753931
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Predominance of infected reticulocytes in the peripheral blood of CD4+ T-cell-depleted mice chronically infected withPlasmodium chabaudi chabaudi (1994)
    Springer
    Parasitology research 80 (1994), S. 614-619 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The distribution ofPlasmodium chabaudi chabaudi AS among normocytes and reticulocytes in the peripheral blood of NIH mice undergoing a primary infection was determined from brilliant cresyl blue/Giemsa's stained thin blood films. During the early stages of infection in normal mice, parasites were found exclusively in normocytes. The presence of parasites in reticulocytes was limited to a period of severe immune pressure on the parasites, peak parasitaemia and the ensuing “crisis” phase, at which time the rapid production of new erythrocytes in response to the anaemia in these mice resulted in a high reticulocyte count. Later, during the recrudescence, parasites inhabited normocytes only. Thus, in immunologically competent animals,P. c. chabaudi AS showed no absolute preference for either mature or immature erythrocytes. In marked contrast, in chronically infected CD4+ T-cell-depleted mice, this malaria parasite apparently displayed a pronounced predilection for reticulocytes. During an unremitting parasitaemia of 2.8%–3.9% during days 13–60 post infection, all parasites were found in reticulocytes, even though these comprised only 25% of the total erythrocyte count. The possible reasons for this reversal in preference for the type of erythrocyte inhabited by asexual malaria parasites are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00933011
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...