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Skip to Search Results- 157Earth and Atmospheric Sciences, Department of
- 157Earth and Atmospheric Sciences, Department of/Journal Articles (Earth and Atmospheric Sciences)
- 122Physics, Department of
- 120Physics, Department of/Journal Articles (Physics)
- 2ERA General Collection
- 2ERA General Collection/Research Materials (ERA General)
- 73Rankin, Robert
- 65Myers, Paul G.
- 32Sivakoff, Gregory Robert
- 21Hu, Xianmin
- 19Birchall, S. Jeff
- 18Jones, B.
- 23X-Rays: Binaries
- 14Field Line Resonances
- 14Magnetosphere
- 13Labrador Sea
- 11Acceleration
- 11Accretion
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1984
Rankin, Robert, Gardner, L. R. T., Barr, H. C., Boyd, T. J. M.
The effects of a magnetic field on the Raman and two‐plasmon decay instabilities are studied in the region of the quarter‐critical density of laser produced plasmas where both are coincident. Two‐plasmon decay of the incident extraordinary wave into two upper‐hybrid waves may now occur in the...
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Kinetic theory of stimulated Raman sidescattering from magnetized plasmas
1985
Boyd, T. J. M., Rankin, Robert
A theory of stimulated Raman sidescattering in magnetized plasmas is presented based on a solution of the Vlasov–Maxwell equations. The incident laser light, in the form of extraordinary mode radiation, decays into light waves which propagate along the uniform magnetic field as right or left...
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Finite Larmor radius effects in stimulated Raman scattering
1985
Boyd, T. J. M., Rankin, Robert. , Gardner, G. A.
Stimulated Raman scattering from a magnetized plasma has been examined using the set of Vlasov–Maxwell equations. The incident laser light, propagating in the form of an extraordinary mode, decays into a scattered extraordinary mode together with electron‐Bernstein waves. For sufficiently strong...
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Inverse resonance absorption in an inhomogeneous magnetized plasma
1985
Barr, H. C., Rankin, Robert. , Boyd, T. J. M., Gardner, G. A.
The linear mode conversion of a plasma wave to a light wave in a magnetized plasma has been examined theoretically and by computer simulation. This conversion is the inverse of resonance absorption exhibiting an identical dependence on magnetic field and density scale length with an optimum...
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Diffraction, self‐focusing, and the geometrical optics limit in laser produced plasmas
1987
Capjack, C. E., Birnboim, A., Rankin, Robert, Marchand, Richard
The effect of diffraction on the self‐modulation of an intense laser beam in an initially uniform hydrogen plasma is investigated. A formalism is used in which the diffraction term in the paraxial wave equation can be arbitrarily reduced by the use of a weight factor ι. In the limit where ι...
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Self‐focusing and ion wave generation in laser‐produced plasmas
1988
Rankin, Robert, Marchand, Richard, Capjack, C. E.
Two‐dimensional hydrodynamic simulations of laser light self‐focusing in a hydrogen plasma are presented. The simulation code includes a model for laser beam propagation which accounts for inverse bremsstrahlung absorption, refraction, diffraction, and ponderomotive forces. A Gaussian hot spot,...
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1988-01-01
Paleontology is a multi-faceted subject that involves taxonomy and community analysis as two of its cornerstones. Both qualitative and quantitative approaches have been incorporated into the various methods employed in such analyses. Each paleontologist obvious has his or her own preference that...
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Very large boulders on the coast of Grand Cayman - the effects of giant waves on rocky coastlines
Download1992-01-01
Two stretches of rocky coastline on Grand Cayman are characterized by boulders that are up to 5.5 m long, 3.4 m wide, and 2.3 m high (estimated to weigh as much as 40 tonnes). Clusters of boulders, which are irregularly distributed through the area, occur up to 100 m inland from the present-day...
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1992
Myers, Paul G., Weaver, Andrew J.
A series of numerical experiments are conducted using the Bryan-Cox ocean general circulation model to investigate the potential existence of low-frequency variability of the thermohaline circulation under seasonal forcing. Experiments are performed with different combinations of a seasonal cycle...
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1993
Frycz, P., Samson, J. C., Rankin, Robert, Harrold, B. G.
Magnetohydrodynamic, field line resonances in the Earth's magnetosphere can have very large velocity shears and field-aligned currents. Auroral radar measurements of high-latitude resonances indicate that the velocities associated with the resonances in the E and F regions am often substantially...