absorption cross section


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absorption cross section

[əb′sȯrp·shən ¦krȯs ′sek·shən]
(electromagnetism)
In radar, the ratio of the amount of power removed from a beam by absorption of radio energy by a target to the power in the beam incident upon the target.
References in periodicals archive ?
Some of these molecular orbitals could be involved in higher energy electronic transitions, however they could not account for the exponential increase in the observed absorption cross section below 300 nm.
After correcting for fluorescence and residual background, the data acquired inside the IS was analyzed using the absorption cross section calculated according to the L-M formalism.
The output of the Lorenz-Mie code, Mie (d, n), (8) was set to give the absorption cross section which was then used directly in Eq.
From the measured wave length and previous experimental results assuming that the absorption cross section in [.
m] represent the scattering and absorption cross section respectively.
Since cold neutrons will depolarize in a liquid deuterium target in which the scattering cross section is much larger than the absorption cross section, it will be necessary to quantify the loss of polarization before capture.
Since the relative intensities of the partial beams were not constant during the experiment, transmission data could not be used to extract the gas particle number density from the known absorption cross section.
0] the absorption cross section for unpolarized neutrons ([[sigma].
3]He atoms in the cell, [sigma] is the wavelength-dependent neutron absorption cross section, l is the length of the cell, [P.
The neutron absorption cross section [sigma] is inversely proportional to neutron velocity, and therefore proportional to the neutron's deBroglie wavelength [lambda].
Thus, the unrenormalized Scofield photoelectric absorption cross sections are currently used in XCOM.