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Bocchio M., Micelotta E. R., Gautier Anne-Lise, Jones A. P.

Small hydrocarbon particle erosion in a hot gas. A comparative study

Astronomy and Astrophysics, 2012, vol. 545, pp. 124

Référence DOI : 10.1051/0004-6361/201219705
Référence ADS : 2012A&A...545A.124B

Résumé :

<BR /> Aims: We compare the classical and molecular approaches for small particle erosion, in an overlapping particle size domain, to model dust destruction in a hot gas. <BR /> Methods: We calculated and compared the carbon ejection rate constant for a-C:H grains and PAHs (with 50 to 5000 carbon atoms) in a hot gas (10<SUP>4</SUP>-10<SUP>8</SUP> K). <BR /> Results: The classical approach does not take into account electron collisions nor electronic interactions, which are shown, using the molecular approach, to be important for small grains ( &lsim; 1000 carbon atoms). For N<SUB>C</SUB>

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