scholarly journals Experimental study of the dynamics of D+H2reactive and inelastic collisions below 1.0 eV relative energy

1989 ◽  
Vol 90 (3) ◽  
pp. 1600-1609 ◽  
Author(s):  
David L. Phillips ◽  
Harold B. Levene ◽  
James J. Valentini
Keyword(s):  
Experimental Study ◽  
Relative Energy ◽  
Inelastic Collisions

Inelastic collisions of CaCl(X 2Σ+) with Ar: A collaborative theoretical and experimental study

1985 ◽  
Vol 83 (2) ◽  
pp. 556-566 ◽  
Author(s):  
Millard H. Alexander ◽  
Stephen L. Davis ◽  
Paul J. Dagdigian
Keyword(s):  
Experimental Study ◽  
Inelastic Collisions

scholarly journals Rotational alignment effects in NO(X) + Ar inelastic collisions: An experimental study

2013 ◽  
Vol 138 (10) ◽  
pp. 104310 ◽  
Author(s):  
M. Brouard ◽  
H. Chadwick ◽  
C. J. Eyles ◽  
B. Hornung ◽  
B. Nichols ◽  
...  
Keyword(s):  
Experimental Study ◽  
Rotational Alignment ◽  
Inelastic Collisions

Experimental Study of the Relative Energy of Symmetrical Tilt Boundaries in a Semi-Conducting F.C.C. Oxide (NiO).

1981 ◽  
Vol 5 ◽  
Author(s):  
Guy Dhalenne ◽  
Michel Dechamps ◽  
Alexandre Revcolevschi
Keyword(s):  
Experimental Study ◽  
Grain Boundary ◽  
Interface Energy ◽  
Relative Energy ◽  
Energy Curve ◽  
Fusion Technique ◽  
Large Size ◽  
Tilt Boundaries ◽  
Misorientation Angles

ABSTRACTLarge size bicrystalline samples of NiO corresponding to tilt configurations around a < 110 > axis have been grown by the flame fusion technique, the misorientation angles varying from 0 to 180°. The variation of the relative energy of the grain boundary with misorientation has been studied and has indicated a very different behaviour from that previously observed by the authors on <100> tilt boundaries. High relative energy values and deep cusps on the energy curve at high coincidence angles are observed. The results are discussed in terms of interface energy.

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

The Possibilities for Analytical Methods in Photoemission and Low-Energy Electron Microscopy

1990 ◽  
Vol 48 (1) ◽  
pp. 348-349
Author(s):  
Ernst Bauer
Keyword(s):  
Chemical Characterization ◽  
Emission Angle ◽  
Relative Energy ◽  
Objective Lens ◽  
Chemical Information ◽  
Magnetic Lens ◽  
Incident Intensity ◽  
X Ray ◽  
Leed Pattern ◽  
Image Position

One of the major shortcomings of conventional PEEM and of LEEM is the lack of chemical information about the surface. Although the imaging of the LEED pattern in the back focal plane of the objective lens of a LEEM instrument allows chemical characterization via the crystalline structure derived from the LEED pattern, this method fails in the absence of a characteristic LEED pattern. Direct information about the atomic composition of the surface is then needed which can be best obtained from inner shell electrons either directly by x-ray-induced photoemission (XPEEM) or by x-ray- or electron-induced Auger electron emission (AEEM). These modes of excitation and imaging can be combined with conventional PEEM and LEEM in one instrument which is presently being developed. Thus a complete structural and chemical characterization becomes possible in one instrument, with parallel detection and high resolution.In contrast to LEEM, in which up to more than 50% of the incident intensity is available for image formation, the intensity of the emitted electrons is much lower in XPEEM and AEEM and the signal is much lower than the background in AEEM. Therefore, intensity I and resolution d have to be optimized simultaneously which is best done by maximizing Q = I/d2 with respect to maximum emission angle α and relative energy distribution ε = ΔVo/V accepted by the instrument. For a well-designed magnetic lens section of the cathode lens its aberrations are determined by the accelerating field F in front of the specimen. For a homogeneous accelerating field F and a cosine emission distribution one obtains for the optimum α and ε values αo,εo a radius of the minimum disc of confusion of

An Experimental Study of Some Properties of Stuttered Words

1962 ◽  
Vol 5 (4) ◽  
pp. 387-394 ◽  
Author(s):  
Bruce Quarrington ◽  
Jerome Conway ◽  
Nathan Siegel
Keyword(s):  
Experimental Study
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