Accuracy of the determination of absorption and reflection coefficients in absorbing media

1966 ◽  
Vol 4 (3) ◽  
pp. 199-201 ◽  
Author(s):  
M. V. Kurik
Keyword(s):  
Reflection Coefficients ◽  
Absorbing Media ◽  
Absorption And Reflection Coefficients

On Determination of Absorption and Reflection Coefficients

1964 ◽  
Vol 3 (2) ◽  
pp. 314_1 ◽  
Author(s):  
Alfred Kahan
Keyword(s):  
Reflection Coefficients ◽  
Absorption And Reflection Coefficients

Determination of the character of sediments and model verification using frequency‐dependent reflection coefficients

2001 ◽  
Vol 110 (5) ◽  
pp. 2767-2767
Author(s):  
Marcia J. Isakson ◽  
Egbert Hood ◽  
Nicholas P. Chotiros
Keyword(s):  
Model Verification ◽  
Reflection Coefficients ◽  
Frequency Dependent

Determination of Reflection Coefficients and Insertion Loss of a Wave‐Guide Junction

1953 ◽  
Vol 24 (8) ◽  
pp. 1046-1050 ◽  
Author(s):  
Georges A. Deschamps
Keyword(s):  
Insertion Loss ◽  
Wave Guide ◽  
Reflection Coefficients

On: “Special Report of the Subcommittee on Polarity Standards” by Ben B. Thigpen, A. E. Dalby, and Ralph Landrum (GEOPHYSICS, August 1975, p. 694–699)

Geophysics ◽  
1976 ◽  
Vol 41 (2) ◽  
pp. 324-324
Author(s):  
W. T. Valenta
Keyword(s):  
Reflection Coefficient ◽  
Compressional Wave ◽  
Velocity Versus ◽  
Reflection Coefficients ◽  
Special Report ◽  
Sonic Logs ◽  
The Relationship

In their report, the authors recommend that the arrival of a compressional wave at a geophone or hydrophone shall ultimately produce a trough (downward or leftward kick) on a seismogram; but they don’t say why. On sonic logs and displays of velocity versus time, velocity increases are up; likewise for density increases on density logs; likewise for positive reflection coefficients on reflection coefficient logs computed from the previously mentioned logs. Should not seismograms, which ideally are bandlimited reflection coefficient logs, conform to the same convention? The committee succeeded in the objectives of establishing the relationship between impulse‐source systems and vibratory‐source systems and of establishing tests for the determination of the polarity of a given system. I feel strongly that the committee should recommend that a compressional arrival shall produce a peak on a seismogram.

Further Studies of the Infrared Absorption of Rubber

1945 ◽  
Vol 18 (1) ◽  
pp. 10-19
Author(s):  
Dudley Williams ◽  
Brock Dale
Keyword(s):  
Reflection Coefficient ◽  
Absorption Coefficient ◽  
Natural Rubber ◽  
Infrared Absorption ◽  
Vibrational Frequency ◽  
Linear Extension ◽  
Short Wave ◽  
Reflection Coefficients ◽  
Original Length ◽  
Absorption And Reflection Coefficients

Abstract The transmission spectrum of natural rubber has been studied in the region between 1µ and 15 µ and the effects of linear and radial stretch have been observed. Linear extension greater than 400 per cent of the original length produces an increase in the C—C vibrational frequency. Both linear and radial stretch produce an increase in absorption coefficient and a decrease in reflection coefficient. The changes in absorption and reflection coefficients are greatest at short wave-lengths.

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