Transfer of Rovibrational Energies in Hydrogen Plasma-Carbon Surface Interactions
Abstract
We present state-of-the-art molecular dynamics (MD) simulations of high-density plasma-bombardment of carbon, mimicking plasma-wall interactions at the fusion reactor first wall. Bare and hydrogenated amorphous carbon surfaces with temperatures in the range of 300-800 K are bombarded by a distribution of neutral hydrogen molecules representing well-defined center-of-mass and rovibrational temperatures. The MD simulations are benchmarked against experiments in which a heated carbon surface is irradiated with hydrogen molecules from a plasma source. Comparisons between simulations and experiment are presented for the rovibrational distributions upon reflection and the rotational and vibrational accommodation coefficients.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2009
- Accession Number
- ADA532713
Entities
People
- A. Yu. Pigarov
- C. O. Reinhold
- D. Nishijima
- E. M. Hollmann
- P. S. Krstic
- R. P. Doerner
- S. J. Stuart
Organizations
- Clemson University