Computer simulations of sputtering and fragment formation during keV C-60 bombardment of octane and beta-carotene

作者：Postawa Zbigniew^*; Kanski Michal; Maciazek Dawid; Paruch Robert J; Garrison Barbara J

来源：Surface and Interface Analysis, 2014, 46(S1): 3-6.

DOI：10.1002/sia.5550

• molecular dynamics simulations
• SIMS
• cluster bombardment

Molecular dynamics computer simulations are used to investigate material ejection and fragment formation during keV C-60 bombardment of organic solids composed from small (octane) and medium (-carotene)-sized organic molecules. Both systems are found to sputter efficiently. For the octane system, material removal occurs predominantly by ejection of intact molecules, whereas fragment emission is a main ejection channel for -carotene. A difference in the molecular dimensions is proposed to explain this observation. Fragment formation is investigated to answer the question why so few fragments remain in the bombarded solid.

• 出版日期2014-11