The action of an electron beam on dust structures in a plasma

Two-dimensional dusty plasma crystal as an electrostatic wiggler for free-electron laser

“…The action of an electron beam on the dusty crystal structure was investigated in some experimental works; for example, direct action of an electron beam on dusty crystals was investigated by Vasilyak et al 26 They found that an electron beam with current above 10 mA caused deformation of the dust structure, which is in agreement with our rough result. This critical current for our parameters in Sec.…”

Non-Hamiltonian dynamics of grains with spatially varying charges

“…Recently, there have been a series of experiments performed in the rf and dc discharges on the interaction of electron beams with clouds of crystallized microparticles, 39 and substantial increase of the particle temperature was observed. These can produce significant perturbations of the equilibrium charge at fairly short spatial scales, yet allowing us to control the perturbations.…”

“…This model is often used for various problems of complex plasmas as a reasonable simplification. [39][40][41] ͑iii͒ It is assumed that the distribution of charges on the grain surface does not play an important role and we can employ the concept of a pointlike charge to calculate the force on the grain. Unless the sheath regions of plasma discharges are considered, the screening length is believed to be determined by ion species and, hence, is usually treated as a constant parameter ͑at least, this assumption is quite justified in bulk plasmas, where ion drift velocities are subthermal͒.…”

Laser excitation of long-lived oscillatory states in a dusty-plasma trap

“…One of the key tasks in investigating a dusty plasma is to study the interactions of various types (including electric [17][18][19], gasdynamic [20,21], and optical [22][23][24]) between particles and their beams [25,26] and the resulting perturbations that arise in the dusty plasma. Earlier, we studied the effect of laser radiation on the character of volume flow of the dusty plasma fluid and, in particular, on its viscoplastic properties [23,24].…”