Method for determining in situ the absorption coefficient of par

Details Method for determining in situ the absorption coefficient of par Method for determining in situ the absorption coefficient of par

1980-02-15

1984-10-09

Rosenberger, R. A.

Optics: measuring and testing

For light transmission or absorption

Of fluent material

356338, G01N 2100

Patent

active

044758162

ABSTRACT:
A true indication of a fluid's absorption coefficient takes into effect the contributing factors of absorption and particle multiple scattering. A pulsed optical source transmits radiation through a relatively large volume of a certain particulate fluid medium. A detector or irradiance meter is gated so as to provide waveforms on a monitor which are characteristic of the absorption and multiple scattering of the medium. Using the transmittance and multiple line spread of the received signal a nearly real-time in situ analysis can be performed to provide scientists, communications specialists, etc. with the capability to anticipate operational parameters.

REFERENCES:
patent: 3519354 (1970-07-01), Brown
Arnush, D., "Underwater Light Beam Propagation in the Small-Angle-Scatter Approximation", JOSA, vol. 62, No. 9, (Sep. 1972), pp. 1109-1111.
Bucher, E. A., "Computer Simulation of Light Pulse Propagation for Communication through Thick Clouds", Applied Optics, vol. 12, No. 10, (Oct. 1973), pp. 2391-2400.

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