Association Mission
The mission of the association is to advance the creation, communication and application of knowledge to benefit society and improve people's lives.
Legal Members
Membership
Contact Us
year 27, Issue 2 (ICOP & ICPET 2021 2021)
ICOP & ICPET _ INPC _ ICOFS 2021, 27(2): 733-736 |
Back to browse issues page
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Moradpour , Bahrami M. Numerical study of the relationship between the radius change of laser beams and their diffuse reflections from the surface of a living tissue. ICOP & ICPET _ INPC _ ICOFS 2021; 27 (2) :733-736
URL: http://opsi.ir/article-1-2467-en.html
URL: http://opsi.ir/article-1-2467-en.html
1- Department of Physics, Science Faculty, University of Lorestan, Khorramabad
Abstract: (821 Views)
Using the Monte Carlo method, the present study deals with the diffuse reflectance of laser light from the surface of a tissue, and its relationship with the radius change of the laser beams. At first, there was a comparison, in terms of fractional flux densities output from the tissue surface, between two Gaussian beams, one with an extremely small width and the other with a radius of 0.2 cm. Then, there was a calculation, in terms of the magnitudes of the fractional flux densities output from the tissue surface, for beams with radii of 0.1, 0.2, 0.4, 0.6, 0.8, and 1 cm in two states. In the first case, the radial distance from the center of the incident beam is assumed to be constant at r = 0.4 cm, but the exit angle of the photons is variable. In the second case, however, the angle is considered to be constant (equal to 30°), although the radial distance changes. Findings show that in the first case, the beam with a radius of 0.4 cm has the highest fractional flux density distribution, but in the second case, the output fractional flux density decreases nearly before the radial distance r = 0.2 cm, although after that, the trend is reversed.
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
