Energy flux density and angular momentum density of radial Pearcey-Gauss vortex array beams in the far field

Optik ◽  
2017 ◽  
Vol 149 ◽  
pp. 189-197 ◽  
Author(s):  
Ke Cheng ◽  
Gang Lu ◽  
Xianqiong Zhong
Keyword(s):  
Angular Momentum ◽  
Flux Density ◽  
Energy Flux ◽  
Momentum Density ◽  
Far Field ◽  
Energy Flux Density ◽  
Vortex Array

scholarly journals Waves in Microstructured Conducting Sheath Helix Embedded Optical Guides with Chiral Nihility and Chiral Materials

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
N. Iqbal ◽  
M. A. Baqir ◽  
P. K. Choudhury
Keyword(s):  
Boundary Conditions ◽  
Flux Density ◽  
Energy Flux ◽  
Pitch Angle ◽  
Electromagnetic Waves ◽  
The Core ◽  
Dispersion Behavior ◽  
Chiral Materials ◽  
Energy Flux Density

The paper deals with the sustainment of electromagnetic waves in circularly cylindrical optical guide with chiral nihility and chiral materials in the core and the clad sections, respectively. A perfectly conducting tightly wound helix is introduced at the core-clad interface. The eigenvalue relation for such a complex optical microstructured guide is deduced by applying suitable boundary conditions at the core-clad interface, and the dispersion behavior is analyzed by varying the pitch angle of helix. The sustainment of energy flux density in such optical guides is estimated under various structural conditions, and the density patterns in core-clad sections are anatomized analytically.

HYGIENIC ASSESSMENT OF ELECTROMAGNETIC RADIATION LEVELS OF BASE STATIONS,INSTALLED ON THE ROOFS OF BUILDINGS AND THE TERRITORY OF LAND PLOTS IN TASHKENT

2021 ◽  
Vol 2 (5) ◽  
pp. 5-11
Author(s):  
G. A. Tashpulatova ◽  
◽  
A. N. Krasavin
Keyword(s):  
Public Health ◽  
Electromagnetic Radiation ◽  
Flux Density ◽  
Energy Flux ◽  
Mobile Communications ◽  
Base Station ◽  
Base Stations ◽  
Cellular Communications ◽  
Measurement Results ◽  
Energy Flux Density

This article is about instrumental measurements of the FR EMR energy flux density. The measurement results were analyzed with the division of the data obtained by the purpose of buildings and the height of the antenna equipment placement, a hygienic assessment of the RF EMR levels created by the equipment of base stations of cellular communications, installed on the roofs of residential and public buildings and adjacent territories of Tashkent is given. A proposal is made on the rational placement of radio engineering facilities.Keywords:electromagnetic field; electromagnetic safety; base station for mobile communications; protection of public health; sanitary supervision

scholarly journals Proca tubes with the flux of the longitudinal chromoelectric field and the energy flux/momentum density

2020 ◽  
Vol 80 (11) ◽  
Author(s):  
Vladimir Dzhunushaliev ◽  
Vladimir Folomeev
Keyword(s):  
Angular Momentum ◽  
Scalar Field ◽  
Electric Field ◽  
Energy Flux ◽  
Momentum Density ◽  
Proton Spin ◽  
Longitudinal Electric Field ◽  
Cylindrically Symmetric ◽  
Electric And Magnetic Fields ◽  
Higgs Scalar

AbstractWe consider non-Abelian SU(3) Proca theory with a Higgs scalar field included. Cylindrically symmetric solutions describing classical tubes either with the flux of a longitudinal electric field or with the energy flux (and hence with nonzero momentum density) are obtained. It is shown that, in quantum Proca theory, there can exist tubes both with the flux of the longitudinal electric field and with the energy flux/momentum density simultaneously. An imaginary particle – Proca proton – in which ‘quarks’ are connected by tubes with nonzero momentum density is considered. It is shown that this results in the appearance of the angular momentum related to the presence of the non-Abelian electric and magnetic fields in the tube, and this angular momentum is a part of the Proca proton spin.

scholarly journals RESEARCH AND EVALUATION OF THE ENERGY FLUX DENSITY OF THE MOBILE PHONE ELECTROMAGNETIC FIELD / MOBILIŲJŲ TELEFONŲ ELEKTROMAGNETINIO LAUKO ENERGIJOS SRAUTO TANKIO TYRIMAI IR ĮVERTINIMAS

2012 ◽  
Vol 5 (4) ◽  
pp. 462-467
Author(s):  
Pranas Baltrėnas ◽  
Raimondas Buckus
Keyword(s):  
Electromagnetic Field ◽  
Mobile Phone ◽  
Flux Density ◽  
Energy Flux ◽  
Text Message ◽  
Text Messages ◽  
Mobile Internet ◽  
Effective Protection ◽  
Allowable Limit ◽  
Energy Flux Density

The article analyses variations in the energy flux density of the electromagnetic field of 10 mobile phones depending on distance. The studies have been conducted using three modes: sending a text message, receiving a text message and connecting a mobile phone to the Internet. When text messages are received or sent from a mobile phone, the values of the energy flux density of the mobile phone electromagnetic field exceed the safe allowable limit and make 10 μW / cm². A distance of 10, 20 and 30 cm from a mobile phone is effective protection against the energy flux density of the electromagnetic field when writing texts, receiving messages or connecting to the mobile Internet. Santrauka Nagrinėjami 10 mobiliųjų telefonų elektromagnetinių laukų energijos srauto tankio kitimai priklausomai nuo atstumo. Tyrimai atliekami, kai iš mobiliojo telefono siunčiamas SMS, kai į mobilųjį telefoną yra siunčiamas SMS iš kito mobiliojo telefono, kai mobilusis telefonas jungiamas prie mobiliojo interneto. Mobiliųjų telefonų elektromagnetinio lauko energijos srauto tankio vertės, kai iš mobiliojo telefono siunčiamas ar gaunamas SMS, viršija saugią leistiną 10 µW/cm² normą. 10, 20, 30 cm atstumas nuo mobiliojo telefono – tinkama apsauga nuo elektromagnetinio lauko energijos srauto tankio viršijimo rašant ar gaunant SMS žinutes, jungiantis prie mobiliojo interneto. Mobiliųjų telefonų elektromagnetinių laukų energijos srauto tankio priklausomybė nuo atstumo pateikiama grafikais.

The influence of the number of shock waves and the energy flux density on the Raman spectrum of collagen type I from rat

Shock Waves ◽  
2019 ◽  
Vol 30 (2) ◽  
pp. 201-214
Author(s):  
J. J. Cárcamo-Vega ◽  
M. R. Brañes ◽  
A. M. Loske ◽  
M. M. Campos-Vallette
Keyword(s):  
Raman Spectrum ◽  
Shock Waves ◽  
Flux Density ◽  
Energy Flux ◽  
Collagen Type ◽  
Collagen Type I ◽  
Type I ◽  
Energy Flux Density
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