On the stable forms of carbon clusters produced in low pressure sputtering discharge

Amal Allouch (1) , Jonathan Mougenot (1) , Armelle Michau (1) , Swaminathan Prasanna (1) , Khaled Hassouni (1) , Mahamadou J Seydou (2) , François Maurel (2) , Pascal Brault (3)

1 LSPM - Laboratoire des Sciences des Procédés et des Matériaux
2 ITODYS (UMR_7086) - Interfaces, Traitements, Organisation et Dynamique des Systèmes
3 GREMI - Groupe de recherches sur l'énergétique des milieux ionisés

Molecular Dynamics (MD) simulation was used to identify the stable structures of carbon clusters Cn (10<=n<=60). The adopted a simulated annealing procedure randomly distributed in the phase-space and submitted to a thermal cycle involving a heating ramp, a relaxation period and cooling phase. We found that for neutral carbon cluster size n<20, the most stable structure of the cluster is linear or monocyclic. For cluster size n>=20, grahene and fullerene structures are obtained to be the most stable structures involved in dusty plasmas.

Mots clés: Dusty plasma; carbon clusters; Simulated Annealing Molecular Dynamics (SA- MD); REBO potential; LAMMPS

Domaines: Physique [physics]; Physique [physics]; Agrégats Moléculaires et Atomiques [physics.atm-clus]

Amal Allouch, Jonathan Mougenot, Armelle Michau, Swaminathan Prasanna, Khaled Hassouni, et al.. On the stable forms of carbon clusters produced in low pressure sputtering discharge. 24th International Symposium on Plasma Chemistry, Jun 2019, Naples, Italy. ⟨hal-02191309⟩