Advisor(s)

William L. Theisen, PhD
Ohio Northern University
Physics & Astronomy, Science, Technology, and Mathematics
w-theisen@onu.edu

Document Type

Poster

Start Date

23-4-2021 9:00 AM

Description

Multi-ring dusty plasma systems were created using a grooved rf electrode. These complex plasma systems had distinct sections consisting of a certain number of rings (1 ring section, 2 ring section, 3 ring section, 4 ring section). These rings had the tendency to rotate azimuthally about the center of the electrode, which allowed for a sectional angular velocity (ω) to be calculated. It was determined that as the number of dust rings (therefore the mass) increased, ω decreased which agrees with conservation of angular momentum. The pressure was also varied and it was found that as pressure increased, the width of the well decreased leading to a reduction of the inter-particle spacing causing ω to decrease.

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Apr 23rd, 9:00 AM

Investigating the Angular Momentum of Dusty Plasma Multi-Rings

Multi-ring dusty plasma systems were created using a grooved rf electrode. These complex plasma systems had distinct sections consisting of a certain number of rings (1 ring section, 2 ring section, 3 ring section, 4 ring section). These rings had the tendency to rotate azimuthally about the center of the electrode, which allowed for a sectional angular velocity (ω) to be calculated. It was determined that as the number of dust rings (therefore the mass) increased, ω decreased which agrees with conservation of angular momentum. The pressure was also varied and it was found that as pressure increased, the width of the well decreased leading to a reduction of the inter-particle spacing causing ω to decrease.