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Diffuse attenuation coefficient profiles
IEEE Transactions on Geoscience and Remote Sensing, 1994Diffuse attenuation coefficient (k/sub d/, k/sub u/) eigenanalysis, using field data, is performed. Data are partitioned into wavelength, province, season, and up/downwelling k. Resulting eigenvectors and scalar multiples allow a reconstruction of the original k profiles. Parameterizing the scalar multiples, using satellite derived surface k's, k depth
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Gamma-Ray Attenuation Coefficient Measurements
Physical Review A, 1973In an earlier paper, published by the author elsewhere, it was shown that for 661.6-keV gamma rays the measurements of gamma -ray attenuation coefficicnts would greatly improve if one uses the counting sequence of Conner et al. together with a new criterion mu t < 1, where mu is the gamma -ray attenuation coefficient and t is the thickness of the ...
S. Gopal, B. Sanjeevaiah
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Investigation of photon attenuation coefficients for marble
Journal of Radiological Protection, 2005The total linear attenuation coefficients micro (cm(-1)) have been obtained using the XCOM program at photon energies of 1 keV to 1 GeV for six different natural marbles produced in different places in Turkey. The individual contribution of photon interaction processes to the total linear attenuation coefficients for marble has been investigated.
Kilincarslan, S +3 more
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Model Diffuse Attenuation Coefficient Profiles
[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium, 2005Abstract : Light transport through water is controlled by the properties of dissolved substances, particulate matter, and water itself. The rate at which the light field decays can be measured by optical instrumentation and parameterized by the apparent optical property of the water, the diffuse attenuation coefficient, k.
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Attenuation and reflection coefficient nomogram
Ultrasonics, 1974Abstract A nomogram is described for the determination of the sound pressure reflection coefficient R and the round-trip loss 2 α L when using the pulse-echo buffer rod technique.
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Linear attenuation coefficients for compensator based imrt
Australasian Physics & Engineering Sciences in Medicine, 2007With rapid technological improvements in computer driven 3-D radiotherapy treatment planning systems (RTPS) the use of compensating filters for intensity modulated radiation therapy (IMRT) will dramatically increase the ease of treatment. The procedure for commissioning .decimal (Sanford, Florida) compensators involved the measurement of the effective ...
T, Bartrum +3 more
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Frequency variability of modal attenuation coefficients
The Journal of the Acoustical Society of America, 2007The intrinsic sediment attenuation in adiabatic waveguides affects transmission loss through the modal attenuation coefficients (MACs). For sand-silt bottoms, the non-linear frequency dependence of attenuation in the upper sediment layer significantly affects the frequency variation of the MACs.
Wendy Saintval +3 more
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Mass attenuation coefficients of β+-particles
Applied Radiation and Isotopes, 1999Abstract The beta-spectra for the allowed transition and the first forbidden unique transition are calculated with enough accuracy. By applying them to the semiempirical transmission equation of monoenergetic electrons and positrons, we obtained the mass attenuation coefficients of beta-particles.
C.Y. Yi, H.S. Han, J.S. Jun, H.S. Chai
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Unbiased Estimation of Atmosphere Attenuation Coefficient
Electrical Engineering, 2006According to the passive sensors’ nature, only the azimuth and elevation angles are used for the target state estimation. In some scenarios, additional information like the irradiances generated by the passive sensors must be introduced to improve the estimation process. On the other hand, irradiances are strongly dependent on the atmosphere properties
G. D. Dikic, Z. M. Djurovic
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