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Energy and angle spectra of sputtered particles for low-energy deuterium impact of deuterated amorphous carbon
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10.1063/1.3028205
/content/aip/journal/jap/104/10/10.1063/1.3028205
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/10/10.1063/1.3028205
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

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).

Image of FIG. 2.
FIG. 2.

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).

Image of FIG. 3.
FIG. 3.

Collection times for sputtered hydrocarbons of different masses.

Image of FIG. 4.
FIG. 4.

Yield of ejected deuterium per impact of D. Note that and .

Image of FIG. 5.
FIG. 5.

Evolution of number of D atoms in the simulation cell with increasing fluence.

Image of FIG. 6.
FIG. 6.

Decay of the average temperature change of the simulation cell for (a) 10 eV and (b) 30 eV impacts of D.

Image of FIG. 7.
FIG. 7.

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.

Image of FIG. 8.
FIG. 8.

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.

Image of FIG. 9.
FIG. 9.

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.

Image of FIG. 10.
FIG. 10.

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).

Image of FIG. 11.
FIG. 11.

(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.

Image of FIG. 12.
FIG. 12.

Distributions of kinetic energies of reflected/sputtered D atoms for selected impact energies.

Image of FIG. 13.
FIG. 13.

Distributions of the translational energy of sputtered molecules for selected impact energies.

Image of FIG. 14.
FIG. 14.

Translational energy distributions of ejected hydrocarbons at impact energies of (a) 10 eV and (b) 30 eV.

Image of FIG. 15.
FIG. 15.

Distributions of rovibrational energy of sputtered hydrocarbons at impact energies of (a) 10 eV and (b) 20 eV.

Image of FIG. 16.
FIG. 16.

Distributions of rovibrational energy of sputtered molecules at impact energies of (a) 2 eV and (b) 20 eV.

Image of FIG. 17.
FIG. 17.

Distributions of vibrational and rotational energies of sputtered molecules at selected impact energies.

Image of FIG. 18.
FIG. 18.

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.

Image of FIG. 19.
FIG. 19.

Distributions of ejected molecules as a function of the solid angle of the angular momentum .

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/content/aip/journal/jap/104/10/10.1063/1.3028205
2008-11-21
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Energy and angle spectra of sputtered particles for low-energy deuterium impact of deuterated amorphous carbon
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/10/10.1063/1.3028205
10.1063/1.3028205
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