Research and Calculation of the Interference Structure Parameters in the Cross Section of a Diffraction-Bounded Laser Beam

2021 ◽  
pp. 216-223
Author(s):  
Oleg V. Bashkov ◽  
Valerii I. Zaikov ◽  
Han H. Khon ◽  
Ilya O. Bashkov
Keyword(s):  
Laser Beam ◽  
Cross Section ◽  
Structure Parameters ◽  
Interference Structure ◽  
The Cross

An Improved Calculation of the Multiphoton Bremsstrahlung Process in the Presence of a Laser Beam

1977 ◽  
Vol 30 (1) ◽  
pp. 33
Author(s):  
Rama Acharya ◽  
Man Mohan
Keyword(s):  
Laser Beam ◽  
Cross Section ◽  
Coulomb Field ◽  
Final States ◽  
The Cross ◽  
Bremsstrahlung Process

It has been noted previously that analyses of free-free transitions in the presence of an ion are appreciably affected by neglecting the Coulomb field of the ion at infinity. We have therefore made here an improved calculation of the cross section for the multiphoton bremsstrahlung process by taking account of the Coulomb field in the initial and final states.

scholarly journals Влияние ограниченной апертуры излучателя на характеристики ширины и угла расходимости лазерного пучка

2019 ◽  
Vol 127 (11) ◽  
pp. 851
Author(s):  
А.М. Райцин
Keyword(s):  
Laser Beam ◽  
Cross Section ◽  
Intensity Distribution ◽  
Necessary Conditions ◽  
Spatial Moments ◽  
Spatial Intensity Distribution ◽  
Spatial Intensity ◽  
The Cross

The necessary conditions for the correct measurement of the width and angle of divergence of the laser beam are determined taking into account the finite dimensions of the aperture of the emitter by a method based on the determination of initial spatial moments. It is shown that in this case stringent conditions are imposed on the shape of the spatial intensity distribution in the cross section of the laser beam, which were not taken into account in the corresponding developed standards.

Reproducing and transmitting the relative energy distribution unit in the cross section of a laser beam

1983 ◽  
Vol 26 (5) ◽  
pp. 366-368
Author(s):  
A. F. Kotyuk ◽  
A. M. Raitsin ◽  
N. A. Kolbanovskaya ◽  
V. B. Korshikov
Keyword(s):  
Laser Beam ◽  
Energy Distribution ◽  
Cross Section ◽  
Relative Energy ◽  
The Cross

Gas dynamic generator of the annular intensity distribution in the cross section of a laser beam

1995 ◽  
Vol 62 (1) ◽  
pp. 91-93
Author(s):  
B. B. Vilenchits ◽  
A. A. Zhdanovskii ◽  
D. S. Umreiko
Keyword(s):  
Laser Beam ◽  
Cross Section ◽  
Intensity Distribution ◽  
Gas Dynamic ◽  
The Cross ◽  
Dynamic Generator

A New Approach to the Demonstration of Oxidase-Localization Using Tannic Acid Or Catechin

1973 ◽  
Vol 31 ◽  
pp. 698-699
Author(s):  
V. Mizuhira ◽  
Y. Futaesaku
Keyword(s):  
Cross Section ◽  
Tannic Acid ◽  
Elastic Fiber ◽  
The Other ◽  
New Approach ◽  
Tissue Block ◽  
Active Reaction ◽  
The Cross

Previously we reported that tannic acid is a very effective fixative for proteins including polypeptides. Especially, in the cross section of microtubules, thirteen submits in A-tubule and eleven in B-tubule could be observed very clearly. An elastic fiber could be demonstrated very clearly, as an electron opaque, homogeneous fiber. However, tannic acid did not penetrate into the deep portion of the tissue-block. So we tried Catechin. This shows almost the same chemical natures as that of proteins, as tannic acid. Moreover, we thought that catechin should have two active-reaction sites, one is phenol,and the other is catechole. Catechole site should react with osmium, to make Os- black. Phenol-site should react with peroxidase existing perhydroxide.

Energy Distribution in Electron Beams

1972 ◽  
Vol 30 ◽  
pp. 568-569
Author(s):  
Tamotsu Ohno
Keyword(s):  
Electron Beam ◽  
Energy Distribution ◽  
Cross Section ◽  
Integral Curve ◽  
Electron Beams ◽  
Electron Gun ◽  
Angular Divergence ◽  
Apparent Increase ◽  
Integral Width ◽  
The Cross

The energy distribution in an electron; beam from an electron gun provided with a biased Wehnelt cylinder was measured by a retarding potential analyser. All the measurements were carried out with a beam of small angular divergence (<3xl0-4 rad) to eliminate the apparent increase of energy width as pointed out by Ichinokawa.The cross section of the beam from a gun with a tungsten hairpin cathode varies as shown in Fig.1a with the bias voltage Vg. The central part of the beam was analysed. An example of the integral curve as well as the energy spectrum is shown in Fig.2. The integral width of the spectrum ΔEi varies with Vg as shown in Fig.1b The width ΔEi is smaller than the Maxwellian width near the cut-off. As |Vg| is decreased, ΔEi increases beyond the Maxwellian width, reaches a maximum and then decreases. Note that the cross section of the beam enlarges with decreasing |Vg|.

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