Open image in new window Fig. 4 Variation of normalized intensity of the generated THz radiation with beam width of the lasers.
Denote that l and w are the length and width of radiation patch.
The input variables were the material conductivity as well as the radiation emissivity, length and width of the recesses.
An acoustic beam has a radiation angle, and the width of the scanned area at the bottom surface depends on depth.
Small radiation beams (<4 cm width) are being increasingly used in the delivery of advanced techniques as Intensity Modulated Radiotherapy (IMRT) and Stereotactic Radiosurgery (SRS).
Results show that: there are many factors to affect solar chimney ventilation that include heat collection height and width, solar radiation intensity, inlet and outlet area ratio of chimney and air inlet velocity, etc.
The Scherrer's equation (namely, D = 0.9λ/bcosθ) was used to estimate the crystallite size of the samples, where λ is the wavelength of the Cu Kα radiation, b is full width at half maximum in radians, 0.9 is the shape factor for spheres, and θ is the diffraction peak angle.
The crystallite size of the samples is calculated by using Scherrer's equation, d = 0.9 λ β Cos θ Open image in new window, where d is the crystallite size, λ is the wavelength of X-ray radiation, β is full width at half maximum, and θ is the diffraction angle.
In theory, the 50 and 100- μm fibers should not incur base radiation as the optrode width into the shank is still larger than the beam size.
A beam size of 32 × 23 μm (height × width), synchrotron radiation with a wavelength of 1.38 Å, and incident on the sample surface at 0.74° were used for the measurements.
