Results 211 to 220 of about 141,795 (265)

Diffusion of protons in the outer radiation belt

Journal of Geophysical Research, 1965
Recent observations by DAVIS and WILLIAMSON (1963) and DAVIS etal. (1964) in the L = 2 to 8 earth radii region of the outer radiation belt confirm the existence of large fluxes of 0.1 to 10 MeV protons. Except for the more energetic protons beyond L = 5, the intensities appear to be very stable over times of the order of years.
M. P. Nakada, G. D. Mead
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Variation in Crop Radiation‐Use Efficiency with Increased Diffuse Radiation

Crop Science, 1992
Radiation‐use efficiency (RUE; grams of biomass accumulated, divided by total solar radiation intercepted) has proven to be a useful variable for quantifying biomass accumulation by crops. Experimental results and theoretical analysis indicate that differences in RUE exist among species, but that RUE for unstressed conditions is relatively stable ...
Sinclair, Thomas R., Shiraiwa, Tatsuhiko, Hammer, Graeme L.   +2 more
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Diffuse galactic radiation

AIP Conference Proceedings, 2012
High-energy interstellar emission is produced by interactions of cosmic-ray electrons and nuclei with the interstellar medium and low-energy radiation fields in the Milky Way. This is not only a background for point-like and extended sources studies, but also a unique tool to learn about cosmic rays and the interstellar medium.
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Diffusive radiation in the infrared region

Laser Physics Letters, 2016
Diffusive radiation generated when a charged particle crosses a disordered stack of plates in the infrared region is considered. The main mechanism causing radiation is multiple scattering of electromagnetic field that is more effective in a medium with near to zero average dielectric permittivity.
Zh S Gevorkian, K B Oganesyan
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Radiation Enhanced Diffusion in Solids

Journal of Applied Physics, 1958
A simple theory of radiation enhanced diffusion has been worked out which describes the dependence of this enhancement on flux and temperature under steady-state conditions. The theoretical study also shows that the measurement of enhanced diffusion as a function of temperature can indicate the mechanism by which defects are removed from the lattice ...
G. J. Dienes, A. C. Damask
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The diffuse component of erythemal ultraviolet radiation

Photochemical & Photobiological Sciences, 2015
The diffuse (Dif) component of ultraviolet radiation (UVR) plays an important role in the daily exposure of humans to solar radiation. This study proposes a semi-empirical method to obtain the Dif component of the erythemal dose rate, or the erythemally weighted irradiance, (EDRDif) calculated from synchronized measurements of the Dif component of UVR (
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Penetration and Diffusion of a Beam of Radiation

Nuclear Science and Engineering, 1962
An approximate solution is obtained to the threedemensional equation of transport for a point source radiating along the Z-axis. The radiation is separated into scattered and unscattered components, and the transport equation for the scattered radiation is derived.
William R. Faust, Arlo D. Anderson
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Diffuse cord enlargement in radiation myelopathy

Clinical Radiology, 1979
Radiation myelopathy is a well-documented complication of the irradiation of neoplasms adjacent to the spinal cord. Myelography has been used to distinguish intraspinal metastases with the diagnosis of radiation myelopathy being made if the study is normal. Four cases of radiation myelopathy are here described which were associated with swelling of the
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Radiation enhanced diffusion in MgO

Journal of Applied Physics, 1998
Radiation enhanced diffusion and ion beam mixing of O18, Ca, and Zn buried tracer layers in MgO, grown by molecular beam epitaxy, have been measured following irradiation with 2.0 MeV Kr+ and 1.0 MeV Ne+, He+, and H+ from 30 to 1500 °C. The ion beam mixing parameter varied between 1.0 and 5.0 Å5 eV−1 for the different tracers at 30 °C and increased ...
A. I. Van Sambeek, R. S. Averback, C. P. Flynn, M. H. Yang, W. Jäger   +4 more
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On Radiation Diffusion and the Rapidity of Escape of Resonance Radiation from a Gas

Physical Review, 1932
The radiation diffusion process is considered from the standpoint of the free paths of the diffusing resonance quanta as influenced by the Doppler and other line broadening effects. Abnormally long free paths are found to be of such importance as to enable resonance radiation to escape from a body of gas faster than has usually been supposed.
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