Density of carbon and deuterium as function of D fluence, for various impact energies. A depth of zero represents the midpoint of the initial surface. The color coding reflects the fraction of the maximum density (see scale on the right).
Time evolution of the cumulative fraction of ejected particles collected, for D impact energies of 5 eV (upper solid line), 15 eV (dashed red line), and 30 eV (lower solid line), for ejection of (a), (b) and hydrocarbon (c).
Collection times for sputtered hydrocarbons of different masses.
Yield of ejected deuterium per impact of D. Note that and .
Evolution of number of D atoms in the simulation cell with increasing fluence.
Decay of the average temperature change of the simulation cell for (a) 10 eV and (b) 30 eV impacts of D.
Average kinetic energies of (a) and D (b) ejecta as a function of D impact energy. The KE is partitioned into translational and rovibrational components.
Average energies of ejecta as a function of impact energy of D for (a) all hydrocarbons and (b) ejected . The error margins are standard errors obtained from six independent target surfaces.
Average temperatures of sputtered molecules associated with the rovibrational and c.m. translational motions. Vibrational data in (a) were not calculated since the number of vibrational degrees of freedom depends nontrivially on the geometrical chemical structure of ejected hydrocarbon.
Sputtered hydrocarbon rovibrational energies as function of the molecular mass, for D impact energies of (a) 5 eV, (b) 10 eV, and (c) 20 eV. The rovibrational temperatures as function of mass for 20 eV impact energy are shown in (d).
(a) Average angular momentum of sputtered molecules as function of the D impact energy, and (b) distribution of angular momentum with mass of the molecule. The error bars represent standard errors.
Distributions of kinetic energies of reflected/sputtered D atoms for selected impact energies.
Distributions of the translational energy of sputtered molecules for selected impact energies.
Translational energy distributions of ejected hydrocarbons at impact energies of (a) 10 eV and (b) 30 eV.
Distributions of rovibrational energy of sputtered hydrocarbons at impact energies of (a) 10 eV and (b) 20 eV.
Distributions of rovibrational energy of sputtered molecules at impact energies of (a) 2 eV and (b) 20 eV.
Distributions of vibrational and rotational energies of sputtered molecules at selected impact energies.
Distributions of solid angles of ejected particle momentum, . The thick dashed lines represent an angular distribution . The same symbol-color coding is used at all pictures, even in cases when some energies are not present.
Distributions of ejected molecules as a function of the solid angle of the angular momentum .
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