backscatter

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backscatter

 [bak´skat″er]
in radiology, radiation deflected by scattering processes at angles greater than 90 degrees to the original direction of the beam of radiation.

back·scat·ter

(bak'skat-ĕr),
Secondary radiation deflected more than 90° from the primary beam. See: scattered radiation.

backscatter

Cytometry
One of two parameters measured in flow cytometry, which is detected at a 90º angle to a laser light beam and corresponds to the fluorescence of individual cells or intracellular components stained with rhodamine- or isothiocyanate-labelled monoclonal antibodies.

Nuclear physics
Electromagnetic radiation—usually understood to be photons, but also ultrasonic waves, etc.—that reflects > 90º from the source, or back in the general direction of a source.

back·scat·ter

(bak'skat-ĕr)
Deflection of diagnostic radiation at angles exceeding 90 degrees to the direction of the beam.
References in periodicals archive ?
The incorrect estimation of backscattering amount and distribution will affect the retrieval of soil moisture.
Microwave and optical satellite data were fused to reduce the effects of vegetation cover on the backscattering of soil moisture.
In this Section, computer simulations are performed concerning the calculation of the 'backscattering coefficient' [[gamma].sub.bsc], (9)-(10) above, as a function of fractal dimension D of the rough surface, for a variety of frequencies of a 'stepped --frequency' (SF) SAR radar, i.e.
In this study, we used Pentacam densitogram to monitor the corneal backscattering effects in FECD patients.
Backscattering Coefficient and Volumetric Water Content.
AIB, determined by integrating the curve of ABTF (Equation 2), expresses the average value of apparent backscattering in the frequency range of interest, while FSAB, the slope of the linear regression line obtained from the curve ABTF vs frequency, is the fraction of apparent backscattering corresponding to each frequency.
Chapron, "Polarization ratio for microwave backscattering from the ocean surface at low to moderate incidence angles," in Proceedings of the IEEE International Geoscience and Remote Sensing Symposium (IGARSS '98), pp.
Those bright white regions on front slopes are with extremely high backscattering intensity caused by small local incidence angle or foreshortening and layover.
Though the backscattering of SC1 and SC2 are interfered with each other when ordination angle [theta] approaching to 90[degrees], the backscattering intensity of SC1 can still be described by the fractional polynomial function given above.
But then if we again look at what point on the graph the 1000dBsm we require the most minimal SNR value at a particular range to cause backscattering from the target, much effort was not made by the radar signal as this is evident from the short distance it travelled.
Through model-guided experimentation, the team discovered that by varying the concentration and size of the nanoparticle solution they could manipulate the intensity and frequency of the light source, thereby achieving an optimal wavelength for algal growth."Implementation of easily tunable wavelength specific backscattering on larger scales still remains a challenge, but its realization will have a substantial impact on the efficient harvesting of phototrophic microorganisms and reducing parasitic growth," says Sureshkumar.