نتایج جستجو برای: Scattering intensity

تعداد نتایج: 290912  

 In this paper, the optical properties of gold nanoparticles investigated. For this purpose the scattering intensity of a laser beam incident on gold nanoparticles has been studied using Mie theory and their respective curves versus different parameters such as scattering angle, wavelength of the laser beam and the size of gold nanoparticles are plotted. Investigating and comparison of the depi...

ابراهیم نسب, ستاره, ثابت داریانی, رضا,

Reflection spectra of four porous silicon samples under etching times of 2, 6, 10, and 14 min with current density of 10 mA/cm2 were measured. Reflection spectra behaviors for all samples were the same, but their intensities were different and decreased by increasing the etching time. The similar behavior of reflection spectra could be attributed to the electrolyte solution concentration which ...

Journal: :journal of sciences, islamic republic of iran 2010
n mansour

in this study, the nonlinear optical properties and optical limiting performance of the silver nanoparticles (agnps) in distilled water are investigated. the nonlinear absorption coefficient of the colloid is measured by the z-scan technique. the optical limiting behavior of the agnp suspension is investigated under exposure to nanosecond laser pulses at 532 nm. the results show that nonlinear ...

Journal: :IEEE Journal of Quantum Electronics 1997

Journal: :Sensors and Actuators B: Chemical 1999

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2005
D H Feng Z Z Xu X L Feng T Q Jia X X Li J S Liu

Incoherent subharmonic light scattering in isotropic media is a new kind of nonlinear light scattering, which involves single input photon and multiple output photons of equal frequency. We investigate theoretically the dependence of the subharmonic scattering intensity on the hyperpolarizability of molecules and the incident intensity using nonlinear optics theory similar to that used for Hype...

N Mansour

In this study, the nonlinear optical properties and optical limiting performance of the silver nanoparticles (AgNPs) in distilled water are investigated. The nonlinear absorption coefficient of the colloid is measured by the Z-scan technique. The optical limiting behavior of the AgNP suspension is investigated under exposure to nanosecond laser pulses at 532 nm. The results show that nonlinear ...

Journal: :X-Ray Spectrometry 2021

X-ray spectra scattered at 90° by acrylic resin plates of various thicknesses are measured. The intensity and polarization Compton-scattered X-rays estimated from the spectra. As thickness slab increases, increases but decreases. optimal for a polarized fluorescence spectrometer is determined, which provides both high polarization.

2003
M. Srinivasa Rao Sujan Sengupta

The mean intensity of planetary nebulae with an expanding atmosphere is modeled by considering dusty and dust-free atmospheres. The bulk matter density is determined from the adopted velocity field through the equation of continuity. The gas is assumed to consist of hydrogen and helium and the gas-to-dust mass ratio is taken to be 3×10. The Rayleigh phase function is employed for atomic scatter...

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