Bidyut Chutia - Academia.edu (original) (raw)
Related Authors
Center of Plasma Physics - Institute For Plasma Research
Uploads
Papers by Bidyut Chutia
Physics of Plasmas, Dec 1, 2021
Observation and Characterization of Cyclic Particle Growth Process in rf Discharge of Ar-C2H2 Gas Mixture
Springer Proceedings in Physics, 2021
A nanodusty plasma experiment to create extended dust clouds using reactive argon acetylene plasmas
Physics of Plasmas, 2021
A large volume 3D dust cloud containing in situ grown nanometer-sized particles is produced in a ... more A large volume 3D dust cloud containing in situ grown nanometer-sized particles is produced in a newly developed versatile table-top experimental device. Carbonaceous nanoparticles having almost uniform size throughout the dust cloud are grown using capacitively coupled rf discharge in Ar–C2H2 gas mixture with a low precursor gas flow rate (∼2 sccm) and minimal rf power (∼1 W). The vertical and radial extensions of the dust cloud are 40 cm and 5 cm, respectively. The pure Ar plasma in the setup is characterized by measuring the discharge parameters as well as plasma parameters under different discharge conditions. The average particle size and its temporal growth profile are determined by analyzing the scanning electron microscope images of the particles. The dust density measured using the laser extinction method is found to be of the order of 1016–1012 m − 3 for the discharge duration of 2–10 min. A spontaneous dust density wave is also observed in the dust cloud.
Physics of Plasmas, 2020
Self-generated vortex flows are observed in many dusty plasma experiments and has been dealt with... more Self-generated vortex flows are observed in many dusty plasma experiments and has been dealt with considerable attention recently. In a typical situation self-excited vortices are found to be due to nonzero curl of the plasma forces on the dust particles e. g in rf discharges, microgravity condition and associated with subsonic dusty plasma flow with low Reynolds numbers. 1,2 Experiments have been attempted to generate vortices by externally induced flow in dusty plasma e.g. laser radiation, neutral gas flow and probe induced flow. 3 In particular, vortex patterns are well known in hydrodynamics and other physical systems (e.g. aerodynamics) when fluids or gases flow past an obstacle or vice versa. In numerical simulation, vortex formation leading to Karman vortex strait has been observed when Reynolds number of the dusty plasma flow is varied. 4
Suppression of a spontaneous dust density wave by modulation of ion streaming
Plasma Science and Technology, 2020
Physics of Plasmas, Dec 1, 2021
Observation and Characterization of Cyclic Particle Growth Process in rf Discharge of Ar-C2H2 Gas Mixture
Springer Proceedings in Physics, 2021
A nanodusty plasma experiment to create extended dust clouds using reactive argon acetylene plasmas
Physics of Plasmas, 2021
A large volume 3D dust cloud containing in situ grown nanometer-sized particles is produced in a ... more A large volume 3D dust cloud containing in situ grown nanometer-sized particles is produced in a newly developed versatile table-top experimental device. Carbonaceous nanoparticles having almost uniform size throughout the dust cloud are grown using capacitively coupled rf discharge in Ar–C2H2 gas mixture with a low precursor gas flow rate (∼2 sccm) and minimal rf power (∼1 W). The vertical and radial extensions of the dust cloud are 40 cm and 5 cm, respectively. The pure Ar plasma in the setup is characterized by measuring the discharge parameters as well as plasma parameters under different discharge conditions. The average particle size and its temporal growth profile are determined by analyzing the scanning electron microscope images of the particles. The dust density measured using the laser extinction method is found to be of the order of 1016–1012 m − 3 for the discharge duration of 2–10 min. A spontaneous dust density wave is also observed in the dust cloud.
Physics of Plasmas, 2020
Self-generated vortex flows are observed in many dusty plasma experiments and has been dealt with... more Self-generated vortex flows are observed in many dusty plasma experiments and has been dealt with considerable attention recently. In a typical situation self-excited vortices are found to be due to nonzero curl of the plasma forces on the dust particles e. g in rf discharges, microgravity condition and associated with subsonic dusty plasma flow with low Reynolds numbers. 1,2 Experiments have been attempted to generate vortices by externally induced flow in dusty plasma e.g. laser radiation, neutral gas flow and probe induced flow. 3 In particular, vortex patterns are well known in hydrodynamics and other physical systems (e.g. aerodynamics) when fluids or gases flow past an obstacle or vice versa. In numerical simulation, vortex formation leading to Karman vortex strait has been observed when Reynolds number of the dusty plasma flow is varied. 4
Suppression of a spontaneous dust density wave by modulation of ion streaming
Plasma Science and Technology, 2020