Empirical studies of dust-surface collisions for metal and carbon projectiles impacting on metal targets in the velocity range from a few m/s to those in excess of 1 km/s have been carried out with the use of a modified pellet injection system. The selected projectile/target shapes, sizes and materials are mimicking the scenario of dust colliding with plasma facing components (PFCs) of a metal machine. The low velocities (10's m/s) reported here, characteristic for dust motion in tokamak scrape-off layer plasmas, are in the range of sticking phenomenon; the critical velocity and size for bouncing off are essential and timely inputs for the dust dynamics codes and statistical models aiming to predict dust transport and redepo-sition on PFCs. © 2013 Elsevier B.V. All rights reserved.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering
- Materials Science(all)
Ratynskaia, S., De Angeli, M., Riva, G., Ripamonti, D., Daminelli, G., Bykov, I., ... Grosso, G. (2013). Dust-surface collisions in adhesion regime for tokamak relevant materials. Journal of Nuclear Materials, 438(SUPPL), -. https://doi.org/10.1016/j.jnucmat.2013.01.171