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
    Medium and high energy x-ray instrument for sample characterization (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 693-696 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A medium to high energy x-ray diffractometer, based on commercial components, is described. The performances of such an instrument in investigating relatively thick crystalline samples are exploited. Results of test measurements, among which is the characterization of a single crystal of Ge as thick as 1 cm, are reported. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146842
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Apple II direct memory access interface to acquire neutron scattering time of flight spectra (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 1979-1983 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A data acquisition system designed to acquire time of flight spectra in neutron scattering experiments is described. The system is completely hardware, so that even employing a relatively slow clock (1 MHz) it is adequate to work at 300 kHz with no loss of information.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141404
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Absolute measurements of the stretching mode density of states in polycrystalline ice Ih (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 83 (1985), S. 750-753 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: An incoherent inelastic neutron scattering experiment on polycrystalline ice Ih at T=20 K is reported. The experiment was performed on the high-resolution chopper spectrometer at the Intense Pulsed Neutron Source (IPNS) of the Argonne National Laboratory. Scattering functions in the angular range from 4° to 20° were converted, after analytical corrections, into density of states of the system in the stretching frequency region. Analysis of these results leads to the following conclusions: (i) the number of modes in the stretching region of ice Ih is 8.1/cell which is that expected in the case of free molecules; (ii) the general shape of the density of states is in qualitative agreement with Raman scattering results, however the high energy side of the neutron data suggests that a non-Raman active band exists at about 3500 cm−1; (iii) the overall bandwidth observed in this experiment is in good agreement with what we estimated by a coherent inelastic neutron scattering study on heavy ice Ih.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.449488
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Antiferromagnetic alignment of Mn in ferromagnetic MnNi"3"."5 alloy: state of order dependence
    Amsterdam : Elsevier
    Journal of Magnetism and Magnetic Materials 104-107 (1992), S. 2015-2016 
    Details
    ISSN: 0304-8853
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0304-8853(92)91647-C
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Analysis of neutron diffraction data in the case of high-scattering cells (1990)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 46 (1990), S. 440-449 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A data reduction procedure is presented to analyse neutron diffraction intensities from low-scattering- power systems contained in high-scattering cells. A careful analysis of the cell contribution is carried out and a numerical program to treat absorption and multiple scattering also due to the cell is developed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767389013000
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Relevance of Charge-Density Measurements for High-Precision Calculations (1998)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 54 (1998), S. 468-480 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: High-precision photon diffraction data in beryllium, diamond, silicon, copper and germanium are reanalysed with the aim of assessing the accuracy of experimental X-ray and γ-ray structure factors by comparing derived values for cohesive energy with the thermochemical ones. Special attention is devoted to the diffraction data analysis for a meaningful and accurate comparison between theory and experiment. A good overall agreement of local density approximation calculations is found when the electron density exhibits spherical symmetry around each atomic site. On the contrary, the analysis of experimental data in 3d transition metals, namely vanadium, chromium, iron, cobalt and nickel, points out failures of the theory in reproducing the asphericity of the electron distribution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767398001548
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Analysis of neutron diffraction data in the case of high-scattering cells. II. Complex cylindrical cells (1992)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 48 (1992), S. 508-515 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A new numerical program for the calculation of neutron scattering intensities in a complex cell made of n concentric cylinders has been developed with the purpose of analysing the diffraction data of fluid metals under high-temperature and high-pressure conditions. A simulation of the experiment on liquid Cs at T = 1673 K and P = 86 × 105Pa contained in such a cell has been performed in order to test the accuracy of standard data-analysis procedures employed to derive the static structure factor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767392000862
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Multiple reflections in a plane-parallel mosaic crystal (1989)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 45 (1989), S. 679-686 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The transfer equations for multiple reflections of X- rays in a mosaic crystal have been derived from the classical theory of electromagnetism. Unless all the beams are contained in the same plane (coplanar case), it is shown that: (i) for a generic polarization of the incident beam the process of diffraction mixes the σ and π components of the electric field in such a way that the transfer equations become non-linear; (ii) in the case of unpolarized incident radiation the transfer equations can be linearized if the electric field of each beam is split into two perpendicular components so that in the n-beam case a system of 2n linear differential equations has to be solved. For neutrons (and X-rays in the coplanar case) reasonably simple solutions for the three- and four-beam cases have been derived. The solutions for the three-beam case are approximate but cover most of the situations which occur in practice, while the solution for the four-beam case is exact but applies to a special, although very common, case. Numerical calculations covering realistic situations have been performed in order to study quantitatively the effect of multiple reflections on both the peak and the integrated power of the primary diffracted beam.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767389005799
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Study of statics and dynamics of hydrogen bonds using neutron scattering
    Amsterdam : Elsevier
    Journal of Molecular Structure 250 (1991), S. 329-336 
    Details
    ISSN: 0022-2860
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0022-2860(91)85039-6
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Charge and spin structure factors in random binary alloys
    Amsterdam : Elsevier
    Solid State Communications 21 (1977), S. 567-569 
    Details
    ISSN: 0038-1098
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0038-1098(77)90034-5
    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...