E M Hollmann et al 2008 Plasma Phys. Control. Fusion 50 102001 doi:10.1088/0741-3335/50/10/102001
E M Hollmann1, P S Krstic2, R P Doerner1, D Nishijima1, A Yu Pigarov1, C O Reinhold2 and S J Stuart3
Show affiliationsThe loss rate of H2 and D2 internal ro-vibrational energy in collisions with an E-294 polycrystalline graphite surface is measured in a plasma-free environment. Accommodation coefficients are found to be approximately 0.01–0.2 for vibrational energy and somewhat larger, 0.05–0.2 for rotational energy, with a slight increasing trend seen with increasing surface temperature. Molecular dynamics simulations of the experiment give a total ro-vibrational accommodation rate of order 0.1, which is consistent with the data at higher surface temperatures.
52.20.Hv Atomic, molecular, ion, and heavy-particle collisions
33.20.Vq Vibration-rotation analysis
Issue 10 (October 2008)
Received 1 July 2008, in final form 10 August 2008
Published 10 September 2008
E M Hollmann et al 2008 Plasma Phys. Control. Fusion 50 102001
W Setyawan et al 2007 J. Phys.: Condens. Matter 19 016007
J J Mestayer et al 2007 J. Phys.: Conf. Ser. 88 012055
F B Dunning et al 2009 J. Phys. B: At. Mol. Opt. Phys. 42 022001
C O Reinhold et al 2009 J. Phys. B: At. Mol. Opt. Phys. 42 091003
C O Reinhold et al 2007 J. Phys.: Conf. Ser. 88 012030
K Ohtaka and M Inoue 1982 J. Phys. C: Solid State Phys. 15 6463
David L Mitchell and William Finnegan 2009 Environ. Res. Lett. 4 045102
H Damon Matthews and Sarah E Turner 2009 Environ. Res. Lett. 4 045105
Soo Ho Kim et al 2006 J. Micromech. Microeng. 16 526