Showing papers by "Marshall N. Rosenbluth published in 1974"
TL;DR: In this article, a simple formalism for the parametric decay of an intense, coherent electromagnetic wave into an electrostatic wave and scattered electromagnetic waves in a homogeneous plasma is developed.
Abstract: A simple formalism for the parametric decay of an intense, coherent electromagnetic wave into an electrostatic wave and scattered electromagnetic waves in a homogeneous plasma is developed. Various instabilities including Brillouin and Raman scattering, Compton scattering, filamentational and modulational instabilities are derived and discussed in a systematic manner. Growth rates as a function of the incident pump power are shown.
656 citations
TL;DR: In this article, Ramaman and Brillouin scattering of an electromagnetic wave in an inhomogeneous, expanding plasma were studied for the application of laser-pellet irradiation.
Abstract: Raman and Brillouin scattering of an electromagnetic wave in an inhomogeneous, expanding plasma are studied. Application to laser‐pellet irradiation is considered.
312 citations
TL;DR: In this paper, the excitation of absolute instabilities in three-wave parametric coupl g processes in inhomogeneous plasmas has been studied analytically, and a detailed examination of the full fourth-order set of differential equations describing such processes in infinite media has been conducted.
Abstract: The excitation of absolute instabilities in three-wave parametric couplin g processes in inhomogeneous plasmas has been studied analytically . A detailed examination of the full fourth-order set of differential equations describing such processes in infinite media confirms the WKB-criterion that absolute instabilities arise only if . A model calculation using the WKB-approximation has also been carried out to study the effects of finite plasma extent and pump depletion; conditions for the excitation of absolute instabilities in this case have also been obtained.
50 citations
TL;DR: In this article, a full electromagnetic treatment was employed to evaluate the effect of finite s corrections on the stability of a plasma immersed in a sheared magnetic field of shear length Ls and having a density gradient of scale length Ln, where ai is the ion gyration radius and k is the wave vector perpendicular to both the direction of the density gradient.
Abstract: In a plasma immersed in a sheared magnetic field of shear length Ls and having a density gradient of scale length Ln, finite s (plasma pressure/magnetic pressure) results in an additional stabilizing influence over and above that due to magnetic shear. Employing a full electromagnetic treatment, these finite-s corrections are evaluated for , where ai is the ion gyration radius and k is the wave vector perpendicular to both the direction of the density gradient and the unsheared component of the magnetic field. For the parameter ranges least stabilized by shear, the dominant finite-s- stabilization effect occurs within the region about the rational surface where the phase velocity is larger than the Alfven speed. As s increases toward or (kaim/M)2/3 [In (MLn/m|Ls|)]4/3 this finite-s correction must be retained, where m/M = electron mass/ion mass.
38 citations