Penning Detachment: An Unstudied, Possibly Important Phenomena

在这个项目中的实验物理化学计划的 化学部，R.S.贝里将研究潘宁支队，一个过程 其中一个自由的气态负离子释放一个电子， 与电子激发的中性原子或分子的碰撞。 的 该项目是两个机构的合作，芝加哥大学 和捷克共和国的Heyrovsky物理化学研究所。 芝加哥实验将用激光激发中性粒子， 而布拉格实验将使用电子碰撞激发， 电子能量分析。 最初的原子离子和中性 冲突将建立主体的证明。 以后的实验将 转移到简单的分子作为供体和靶。 潘宁分离过程，类似于潘宁电离， 研究很少，但代表了气体之间的一种新型相互作用， 可能在化学气相中起重要作用的相物种 沉积或其它等离子体工艺，例如在上部 气氛 因此，它具有广泛的影响，从可能的 改进制造工艺，以更好地了解电离层 现象。

In this project in the Experimental Physical Chemistry program of the Chemistry Division, R.S. Berry will study Penning detachment, a process in which a free, gaseous negative ion releases an electron as a result of a collision with an electronically excited neutral atom or molecule. The project is a collaboration of two institutions, The University of Chicago and the Heyrovsky Institute for Physical Chemistry in the Czech Republic. The Chicago experiments will be done with laser excitation of neutrals, while the Prague experiments will use electron impact excitation and subsequent electron energy analysis. Initially atomic ion and neutral collisions will establish the proof of principal. Later experiments will move to simple molecules as donors and targets. %%% The Penning detachment process, which is analogous to Penning ionization, is little studied but represents a new type of interaction between gas phase species which may play an important role in chemical vapor deposition or other plasma processes, such as take place in the upper atmosphere. As such, it has wide-ranging implications, from possibly improved manufacturing processes to a better understanding of ionospheric phenomena.