Cross sections for the anisotropic interaction of NNO with various molecules

1988 ◽  
Vol 89 (9) ◽  
pp. 5642-5649 ◽  
Author(s):  
Cynthia J. Jameson ◽  
A. Keith Jameson ◽  
Joseph K. Hwang ◽  
Nancy C. Smith
Keyword(s):  
Cross Sections ◽  
Anisotropic Interaction

On the sudden Limit in the Capture of Particles for Long-Range Anisotropic Interactions

2002 ◽  
Vol 216 (5) ◽  
Author(s):  
E.I. Dashevskaya ◽  
A. I. Maergoiz ◽  
V.G. Ushakov
Keyword(s):  
Long Range ◽  
Cross Sections ◽  
Capture Cross ◽  
Anisotropic Interaction ◽  
Anisotropic Interactions ◽  
Capture Cross Sections

The capture cross sections and rigidity factors for atom-linear rotor anisotropic interaction proportional to

scholarly journals Theoretical study of the anisotropic interaction potential and partial scattering cross sections for He-HCl system

2006 ◽  
Vol 55 (5) ◽  
pp. 2215
Author(s):  
Yu Chun-Ri ◽  
Huang Shi-Zhong ◽  
Feng Er-Yin ◽  
Wang Rong-Kai ◽  
Cheng Xin-Lu ◽  
...  
Keyword(s):  
Cross Sections ◽  
Interaction Potential ◽  
Theoretical Study ◽  
Anisotropic Interaction ◽  
Scattering Cross ◽  
Scattering Cross Sections

Analysis of STEM micrographs of thick objects

1978 ◽  
Vol 36 (2) ◽  
pp. 106-107
Author(s):  
S. Golladay
Keyword(s):  
Inelastic Scattering ◽  
Multiple Scattering ◽  
Mass Distribution ◽  
Cross Sections ◽  
Phase Contrast ◽  
Image Point ◽  
Contrast Effects ◽  
Total Cross Sections ◽  
Elastic And Inelastic Scattering

The theory of multiple scattering has been worked out by Groves and comparisons have been made between predicted and observed signals for thick specimens observed in a STEM under conditions where phase contrast effects are unimportant. Independent measurements of the collection efficiencies of the two STEM detectors, calculations of the ratio σe/σi = R, where σe, σi are the total cross sections for elastic and inelastic scattering respectively, and a model of the unknown mass distribution are needed for these comparisons. In this paper an extension of this work will be described which allows the determination of the required efficiencies, R, and the unknown mass distribution from the data without additional measurements or models. Essential to the analysis is the fact that in a STEM two or more signal measurements can be made simultaneously at each image point.

Direct Observation of Heat Exchanger Deposits by Cross Sectioning

1967 ◽  
Vol 25 ◽  
pp. 364-365
Author(s):  
R. W. Anderson ◽  
D. L. Senecal
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Heat Exchanger ◽  
Direct Observation ◽  
Cross Sections ◽  
Preparation Method ◽  
Specimen Preparation ◽  
Flowing Water ◽  
Transmission Electron ◽  
Deposit Layer

A problem was presented to observe the packing densities of deposits of sub-micron corrosion product particles. The deposits were 5-100 mils thick and had formed on the inside surfaces of 3/8 inch diameter Zircaloy-2 heat exchanger tubes. The particles were iron oxides deposited from flowing water and consequently were only weakly bonded. Particular care was required during handling to preserve the original formations of the deposits. The specimen preparation method described below allowed direct observation of cross sections of the deposit layers by transmission electron microscopy.The specimens were short sections of the tubes (about 3 inches long) that were carefully cut from the systems. The insides of the tube sections were first coated with a thin layer of a fluid epoxy resin by dipping. This coating served to impregnate the deposit layer as well as to protect the layer if subsequent handling were required.

An Analysis of Dissociation of Molecules in a High Resolution Electron Microscope

1973 ◽  
Vol 31 ◽  
pp. 486-487
Author(s):  
Mihir Parikh
Keyword(s):  
Electron Microscope ◽  
High Resolution ◽  
Cross Sections ◽  
Resolving Power ◽  
Peak Intensity ◽  
Molecular Film ◽  
Resolution Electron ◽  
Dissociation Cross Section ◽  
High Resolution Electron Microscope ◽  
The Stability

It is well known that the resolution of bio-molecules in a high resolution electron microscope depends not just on the physical resolving power of the instrument, but also on the stability of these molecules under the electron beam. Experimentally, the damage to the bio-molecules is commo ly monitored by the decrease in the intensity of the diffraction pattern, or more quantitatively by the decrease in the peaks of an energy loss spectrum. In the latter case the exposure, EC, to decrease the peak intensity from IO to I’O can be related to the molecular dissociation cross-section, σD, by EC = ℓn(IO /I’O) /ℓD. Qu ntitative data on damage cross-sections are just being reported, However, the microscopist needs to know the explicit dependence of damage on: (1) the molecular properties, (2) the density and characteristics of the molecular film and that of the support film, if any, (3) the temperature of the molecular film and (4) certain characteristics of the electron microscope used

Sign in / Sign up

Export Citation Format

Share Document