|Cipher of the experiment:||Plasmennyi kristall|
|Direction of the NPI:||1. Physical and Chemical Processes and Materials in Space Environment|
|Section CNTS:||Advanced Technologies for Space Exploration|
|Purpose of the experiment:||
Phase 1a. Investigation of plasma-dust structures in gas-discharge plasma of a high-frequency capacitive discharge.|
Phase 1b. Investigation of plasma-dust structures in plasma of glow discharge of direct current.
Phase 2. Investigation of effect of UV space radiation on behavior of macro-particles charged by photoemission.
Phase 3. Investigation of plasma-dust
structures in space environment exposed to UV Sun
radiation, plasma flows and ionizing radiation.
|Description of the experiment:||
Study of physical phenomena in plasma-dust crystals |
at different pressure levels of inert gas and power
of HF generator in microgravity environment.
Science Hardware Used:
Plasma Crystal-3 Plus Hardware:
|Expected results:||For the first time it was found that there were formed three-dimensional ordered structures of micron-size heavily charged particles with a large parameter of imperfection (three-dimensional plasma crystal) with face-centered and body-centered lattices. It was shown that face-centered and hexagonal structures could coexist simultaneously. Excitation of dust component waves was performed, which makes it possible to obtain dispersion rations and study wave pattern. Nonlinear waves of dust component density were found. Areas with convective motion of charged macroparticles in liquid plasma ("plasma-dust vortices") were revealed; in so doing, particle behaviour differs significantly from that being observed under gravity conditions. A possibility was demonstrated to study macroparticle growth from gas phase under microgravity conditions.|
|Experiment state:||Being implemented|