The Faculty of Engineering Sciences
--  Department of Mechanical Engineering
 
MOND, MICHAEL
 
Born: 1951, Israel
Ph.D.: 1979, Univ. of Iowa, USA
Research Interests: Plasma physics: Wave propagation and instabilities in 
nonuniform MHD plasmas; equilibrium, stability and heating of 
magnetically confined plasmas; waves and instabilities in space plasmas. Gas 
dynamics: Stability of strong ionizing shocks. Stability of self-gravitating 
systems.
Research Projects: Amplification of MHD waves and excitation of 
instabilities in nonuniform plasmas flows, funding: Israeli Ministry of 
Science. Turbulent transport in complex flows, funding: Israeli Ministry of 
Science.

Abstracts of Current Research
Strong ionizing shocks: The corrugation instability of strong ionizing shocks 
and spontaneous acoustic emission from them are investigated. The classical 
Dyakov-Kontorovitz criteria for spontaneous emission of sound from shocks 
were reconsidered by calculating the sound velocity in the partially ionized 
gas behind the shock. It was found that spontaneous emission of sound 
occurs in the Mach number interval 15 < M < 27 for Argon at 5 Torr. This 
finding corresponds to some long unexplained experimental results. The 
model is now extended in order to include multiple ionizations and multiple 
gas components.
Localized MHD spectra: The eigen magnetosonic oscillations in a plasma 
column surrounded by a perfectly conducting wall were investigated. The 
radial nonuniformities of the plasma give rise to various types of local-
izations of the fast as well as the slow magnetosonic waves. In particular, 
expressions for near wall, annulus and near axis spectra are derived. It is 
suggested that a combination of global fast magnetosonic waves and near 
axis slow magnetosonic waves can provide an efficient source of heating in 
existing and future tokamaks. The nonlinear stages of the eigen oscillations 
are now studied.

Recent Publications
RUTKEVICH, I.M. and MOND, M. Amplification of fast magnetosonic 
waves and the cutoff spectrum. J. Plasma Phys. 48:345, 1992.
RUTKEVICH, I.M. and MOND, M. Amplification of magnetovortex waves 
in planar MHD flows. J. Plasma Phys. 48:359, 1992.
CEDERBAUM, G. and MOND, M. Stability properties of a viscoelastic 
column under periodic force. J. Applied Mech. 59:16, 1992.
MOND, M., CEDERBAUM, G., KAHN, P.B. and ZARMI, Y. Stability 
analysis of the nonlinear Mathieu equation. J. Sound and Vibration 
167:77, 1993.
KLEEORIN, N., MOND, M. and ROGACHEVSKI, I. MHD instabilities in 
developed small scale turbulence. Phys. Fluids 5:4128,1993.

Key words: Plasma physics, magnetohydrodynamics, gas dynamics, 
ionizing shock waves

Phone:	7-472110
Fax:	7-280252
E.Mail:	mond@menix.bgu.ac.il