scholarly journals Determination of the aerosol disperse composition by a laser particle analyzer with Gaussian distribution of the light beam intensity

2019 ◽  
Vol 0 (56) ◽  
pp. 169-179
Author(s):  
О. Я. Бекшаєв ◽  
С. М. Контуш ◽  
В. В. Калугін
Keyword(s):  
Light Beam ◽  
Gaussian Distribution ◽  
Beam Intensity ◽  
Disperse Composition

DETERMINATION OF TRANSFER FUNCTIONS OF MCP-200 ALLOY USING 6 MV PHOTON BEAM FOR BEAM INTENSITY MODULATION

2004 ◽  
Vol 04 (03) ◽  
pp. 305-310 ◽  
Author(s):  
MUHAMMAD MAQBOOL
Keyword(s):  
Linear Accelerator ◽  
Transfer Functions ◽  
Theoretical Data ◽  
Intensity Modulation ◽  
Beam Intensity ◽  
Experimental Results ◽  
Photon Beam ◽  
Photographic Film ◽  
Optimum Dose

Transfer functions of MCP-200 alloy were determined for beam intensity modulation. 6 MV Photon beam, obtained from linear accelerator, is attenuated by blocks of MCP-200 alloy with different thicknesses placed at a distance of one meter from the source. The attenuated beam was allowed to fall on photographic film and optical densities were measured. Films were scanned and profiles were obtained for different thicknesses of the alloy and in the absence of any attenuator. Transfer functions were obtained theoretically as well as analytically by fitting the experimental results into theoretical data. The whole work was completed using optimum dose units and found to be 30 cGy.

A NOTE ON THE DETERMINATION OF THE EXTINCTION COEFFICIENT OF AEROSOLS

1947 ◽  
Vol 25a (1) ◽  
pp. 62-67
Author(s):  
G. O. Langstroth ◽  
J. L. Wolfson
Keyword(s):  
Light Beam ◽  
Extinction Coefficient ◽  
Photoelectric Cell ◽  
Smoke Chamber

Difficulties were encountered in smoke chamber experiments in obtaining reliable extinction coefficient data by methods based on brightness measurements of bright and 'black' surfaces seen through the smoke. These difficulties led to an investigation of the reliability of a commonly used method employing a parallel light beam and a photoelectric cell. The results indicate that the method is capable of yielding extinction coefficient data with an accuracy of 1 to 2% under the conditions of our experiments.

Determination of the coherency matrix of a broadband stochastic electromagnetic light beam

2008 ◽  
Vol 55 (17) ◽  
pp. 2765-2776 ◽  
Author(s):  
Panomsak Meemon ◽  
Mohamed Salem ◽  
Kye-Sung Lee ◽  
Maryam Chopra ◽  
Jannick P. Rolland
Keyword(s):  
Light Beam

Determination of the mean energy density of a light beam in an irregular thermodynamic light guide

1976 ◽  
Vol 30 (6) ◽  
pp. 716-722
Author(s):  
A. F. Yakubov ◽  
�. T. Bruk-Levinson ◽  
A. G. Muradyan ◽  
O. G. Martynenko
Keyword(s):  
Energy Density ◽  
Light Beam ◽  
Light Guide ◽  
The Mean
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