Search Results - "Sagdeev, Roald Z"

How electron two-stream instability drives cyclic Langmuir collapse and continuous coherent emission by Che, Haihong, Goldstein, Melvyn L., Diamond, Patrick H., Sagdeev, Roald Z.

“…Continuous plasma coherent emission is maintained by repetitive Langmuir collapse driven by the nonlinear evolution of a strong electron two-stream…”
Get full text

Laser acceleration of monoenergetic protons via a double layer emerging from an ultra-thin foil by Eliasson, Bengt, Liu, Chuan S, Shao, Xi, Sagdeev, Roald Z, Shukla, Padma K

“…We present theoretical and numerical studies of the acceleration of monoenergetic protons in a double layer formed by the laser irradiation of an ultra-thin…”
Get full text

Direct evidence of nonstationary collisionless shocks in space plasmas by Dimmock, Andrew P, Russell, Christopher T, Sagdeev, Roald Z, Krasnoselskikh, Vladimir, Walker, Simon N, Carr, Christopher, Dandouras, Iannis, Escoubet, C Philippe, Ganushkina, Natalia, Gedalin, Michael, Khotyaintsev, Yuri V, Aryan, Homayon, Pulkkinen, Tuija I, Balikhin, Michael A

“…Collisionless shocks are ubiquitous throughout the universe: around stars, supernova remnants, active galactic nuclei, binary systems, comets, and planets. Key…”
Get full text

An interview with Roald Sagdeev: his story of plasma physics in Russia, 1956–1988 by Sagdeev, Roald Z., Diamond, Patrick H.

“…This oral history interview presents Roald Z. Sagdeev’s story of plasma physics in Russia. It chronicles the Russian school’s achievements in basic,…”
Get full text

Linear theory of the mirror instability in non-Maxwellian space plasmas by Pokhotelov, Oleg A., Treumann, Rudolf A., Sagdeev, Roald Z., Balikhin, Michael A., Onishchenko, Oleg G., Pavlenko, Vladimir P., Sandberg, Ingmar

“…A unified theory of the mirror instability in space plasmas is developed. In the standard quasi‐hydrodynamic approach, the most general mirror‐mode dispersion…”
Get full text

Nonlinear dynamics of inertial Alfvén waves in the upper ionosphere: Parametric generation of electrostatic convective cells by Pokhotelov, Oleg A., Onishchenko, Oleg G., Sagdeev, Roald Z., Treumann, Rudolf A.

“…We consider the excitation of convective cells in the parametric decay of finite amplitude (inertial) Alfvén waves. We formulate a set of coupled equations…”
Get full text

Slow drift mirror modes in finite electron-temperature plasma: Hydrodynamic and kinetic drift mirror instabilities by Pokhotelov, Oleg A., Sandberg, Ingmar, Sagdeev, Roald Z., Treumann, Rudolf A., Onishchenko, Oleg G., Balikhin, Michael A., Pavlenko, Vladimir P.

“…We develop a fully kinetic linear theory of the drift mirror (DM) instability accounting for arbitrary particle velocity distribution functions including…”
Get full text

The rise and fall of Mir by Sagdeev, R Z

“…An editorial notes the space station Mir outlived not only the original manufacturer's warranty, but also its parent state, the USSR, by almost 10 years. Mir's…”
Get full text

Estimates of Mass and Angular Momentum in the Oort Cloud by Marochnik, Leonid S., Mukhin, Lev M., Sagdeev, Roald Z.

“…Estimates can be made of unseen mass (in the form of cometary nuclei) at the heliocentric distances between 3 $\times $ 10$^{3}$ and 2 $\times $ 10$^{4}$…”
Get full text

The Average Intensity and Spectral Evolution of Batse Cosmic Gamma-Ray Bursts by Mitrofanov, Igor G., Chernenko, Anton M., Pozanenko, Alexei S., Briggs, Michael S., Paciesas, William S., Fishman, Gerald J., Meegan, Charles A., Sagdeev, Roald Z.

“…Statistical studies of BATSE gamma-ray bursts are presented: we average the time profiles, aligning the events at their highest peaks. Using the time histories…”
Get full text

Crater age and hydrogen content in lunar regolith from LEND neutron data by Starr, Richard D., Litvak, Maxim L., Petro, Noah E., Mitrofanov, Igor G., Boynton, William V., Chin, Gordon, Livengood, Timothy A., McClanahan, Timothy P., Sanin, Anton B., Sagdeev, Roald Z., Su, Jao J.

“…Analysis of Lunar Exploration Neutron Detector (LEND) neutron count rates for a large set of mid-latitude craters provides evidence for lower hydrogen content…”
Get full text

The 1976 Oppenheimer lectures: Critical problems in plasma astrophysics. I. Turbulence and nonlinear waves by Sagdeev, Roald Z.

Get full text

Crater Age and Hydrogen Content in Lunar Regolith from LEND Neutron Data by Starr, Richard D., Litvak, Maxim L., Petro, Noah E., Mitrofanov, Igor G., Boynton, William V., Chin, Gordon, Livengood, Timothy A., McClanahan, Timothy P., Sanin, Anton B., Sagdeev, Roald Z., Su, Jao J.

“…Analysis of Lunar Exploration Neutron Detector (LEND) neutron count rates for a large set of mid-latitude craters provides evidence for lower hydrogen content…”
Get full text

The large scale stability and self-organization in homogeneous turbulent shear flow by Chkhetiany, Otto G, Moiseev, Semion S, Petrosyan, Arakel S, Sagdeev, Roald Z

Get full text

A qualitative analysis of the mechanisms of generation of the large-scale flows by Fridman, Alexei M., Mikhailovskii, Anatolii B., Sagdeev, Roald Z.

“…The aim of the present Letter is to provide a qualitative analysis of the mechanisms of generation of the large-scale flows by the small-scale waves…”
Get full text

Editorial: The Rise and Fall of Mir by Sagdeev, Roald Z.

Get full text

Science and Perestroika: A Long Way to Go by SAGDEEV, ROALD Z.

“…The Soviet contribution to science in the 20th century is examined critically by a leading Soviet scientist, with emphasis on changes under perestroika and…”
Get full text

Nonlinear dynamics of inertial Alfvén waves in the upper ionosphere: Parametric generation of electrostatic convective cells by POKHOTELOV, Oleg A, ONISHCHENKO, Oleg G, SAGDEEV, Roald Z, TREUMANN, Rudolf A

Get full text

Collisionless Shock Waves by Sagdeev, Roald Z., Kennel, Charles F.

“…Collisionless shock waves in the solar system may form a variety of astrophysical phenomena…”
Get full text

Did Bohr Share Nuclear Secrets? by Bethe, Hans A., Gottfried, Kurt, Sagdeev, Roald Z.

“…Physicists Neils Bohr met with a Soviet agent in late 1945. While some have accused Bohr of disclosing nuclear secrets, a recently disclosed memo offers…”
Get full text