U.S.-Brazil Cooperative Program: Desorption Induced by Kev-MeV Projectiles

美国的这个奖-巴西合作科学 该计划支持化学合作研究， 由埃米尔·A博士主持。德克萨斯州A M 卡洛斯·巴罗斯·莱特博士领导的小组 里约热内卢天主教大学（PUC） 巴西，里约热内卢。 研究的目的是 研究离子从表面的二次发射 用MeV能量的C60+离子作为抛射体轰击。 将评估二次排放的可能性 在表面特征方面。 将进行产生C60+束的实验 在巴西队的实验室里， Graaf装置，输入实验设计， 飞行时间与符合计数技术 由美国集团提供。 数据整理和分析 将主要在德克萨斯州进行。 的 实验将在四种目标材料上进行： 金属（Au）、离子（CsI）、有机（苯丙氨酸和 双分子（格拉梅西定）。 作为对比， 具有较小的等速度射弹（C+， C6+，C10+）的研究。 该项目继续 这两个小组以前的合作努力 自1984年以来，共出版了23部联合出版物。

This award from the U.S.-Brazil Cooperative Science Program supports collaborative research in chemistry to be conducted by Dr. Emile A. Schweikert of Texas A & M University and a group led by Dr. Carlos V. Barros Leite of Pontifica Universidade Catolica (PUC) in Rio de Janeiro, Brazil. The objective of the research is to investigate the secondary emission of ions from surfaces bombarded by MeV energy C60+ ions acting as projectiles. The secondary emissions will be evaluated for potential in surface characterization. Experiments to produce the C60+ beam will be carried out in the laboratory of the Brazilian team using its Van de Graaf apparatus, with input on experimental design, time-of-flight and coincidence counting technology provided by the U.S. group. Data work-up and analysis would be primarily carried out at Texas A & M. The experiments will be run on four target materials: metallic (Au), ionic (CsI), organic (phenylalanine and bimolecular (gramacidine). For comparison, the same emissions with smaller equal velocity projectiles (C+, C6+, C10+) will be studied. This project continues previous collaborative efforts between the two groups that have resulted in 23 joint publications since 1984.