نتایج جستجو برای: distribution intensity

تعداد نتایج: 774270  

2015
Yimin Zhou Guoquan Zhou Guoyun Ru

An analytical expression of an Airy-Gauss beam passing through a fractional Fourier transform (FRFT) system is derived. The normalized intensity distribution, phase distribution, centre of gravity, effective beam size, linear momentum, and kurtosis parameter of the Airy-Gauss beam are demonstrated in FRFT plane, respectively. The influence of the fractional order p on the normalized intensity d...

Journal: :Optics letters 1999
M Stoytchev A Z Genack

We measure the distribution of intensity of microwave radiation transmitted through absorbing random waveguides of lengths L up to localization length xi . For large intensity values the distribution is given by a negative stretched exponential to the 1/2 power, in agreement with predictions by Nieuwenhuizen and van Rossum [Phys. Rev. Lett. 74, 2674 (1995)] for diffusing waves in nonabsorbing s...

Journal: :Ultrasonics sonochemistry 2007
J Klíma A Frias-Ferrer J González-García J Ludvík V Sáez J Iniesta

The intensity distribution of the ultrasonic energy is, after the frequency, the most significant parameter to characterize ultrasonic fields in any sonochemical experiment. Whereas in the case of low intensity ultrasound the measurement of intensity and its distribution is well solved, in the case of high intensity (when cavitation takes place) the measurement is much more complicated. That is...

Journal: :Journal of Research of the National Bureau of Standards 1936

Journal: :The Journal of the Institute of Image Information and Television Engineers 2002

Journal: :Monthly Notices of the Royal Astronomical Society 1932

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