Zobrazeno 1 - 10
of 25
pro vyhledávání: '"R. P. Godwin"'
Publikováno v:
Journal of Applied Physics. 89:3177-3183
We investigate the interaction of a constant-velocity, long-rod penetrator with detonating high explosive. An analytical flow-field model extending the Birkhoff model of inert target penetration is developed and compared with numerical simulations. W
Autor:
E. J. Chapyak, R. P. Godwin
Publikováno v:
American Journal of Physics. 68:211-222
This Resource Letter provides a tutorial on bubble and cavitation dynamics and an introduction to its extensive literature.
Publikováno v:
Physics of Fluids. 19:104102
We extend previous analytical work on instability growth in spherically convergent fluid systems by characterizing linear perturbation dynamics on the collapse of a gas-filled spherical cavity surrounded by an incompressible fluid. We also investigat
Autor:
R. P. Godwin
Publikováno v:
The Review of Laser Engineering. 8:157-164
Autor:
R. P. Godwin
Publikováno v:
Advances in X-ray Analysis. 19:533-569
The high-density and high-temperature plasma conditions required for successful laser-initiated fusion make x-ray diagnostics a valuable tool in this exciting field. Measurements of the hard x-ray bremsstrahlung continuum emitted from laser targets p
Publikováno v:
Physical Review Letters. 38:1024-1027
The first measurement of polarized x-rays from a laser-produced plasma is reported. The degree of polarization is related to the net anisotropy of the hot-electron velocity distribution.
Autor:
R. P. Godwin, D. V. Giovanielli
Publikováno v:
American Journal of Physics. 43:808-817
The concepts of linear optics are applied to the physics of energy coupling into laser‐produced plasmas currently of interest in laser‐initiated fusion research. The effects of polarization and angle of incidence upon reflection and refraction ar
Publikováno v:
Zeitschrift für Naturforschung A. 32:1100-1107
Optical calorimetry of laser radiation reflected from plane targets irradiated by a 0.3 J/30 ps Nd-laser pulse (λ = 1.06 μm) has been performed. A 2π-ellipsoidal mirror was used for scattered light collection. We find that scattering outside the s
Autor:
R. P. Godwin, K. B. Mitchell
Publikováno v:
Journal of Applied Physics. 49:3851-3854
X‐ray experiments were conducted giving data on radiation and electron transport from plasmas produced by the interaction of 10.6‐μm laser light focused on layered targets. The targets employed were evaporated aluminum on SiO2 and copper substra
Publikováno v:
Zeitschrift für Physik A Hadrons and nuclei. 211:329-341
Measurements of the photocurrent from thin Al cathodes in a windowless electron multiplier as a function of wavelength, polarization, angle of incidence, and film thickness have been carried out in the extreme vacuum ultraviolet. A normal incidence m