Chemistry and Spectroscopy of Excited State Hydrocarbon Free Radicals

在这个项目中，密西西比大学化学系的安德鲁·库克西教授将研究和表征一系列与燃烧相关的碳氢链自由基的电子状态，这些自由基的化学可能与基态有很大不同。这些态的激发能、它们的结构以及它们的电子分布将用光谱学来确定。在超音速自由射流中，通过一种改进的热解源，可以连续产生自由基C3H、C4H、HC4H2和HC3O以及三重态H_2C_3和H_2C_4。伴随着研究活动的是一种特定的教育努力，以适应全面、平衡、学术生涯的发展。研究燃烧相关自由基的性质非常重要，因为它为改善内燃机和其他动力源的燃烧过程提供了数据和模型。

In this project funded through the Faculty Early Career Development (CAREER) Program of the Chemistry Division, Prof. Andrew Cooksy of the Department of Chemistry of the University of Mississippi will investigate and characterize electronic states of a series of combustion related hydrocarbon chain radicals for which the chemistry is likely to differ substantially from the ground state. The excitation energies of these states, their structures as well as their electron distributions will be determined spectroscopically. The radicals C3H, C4H, HC4H2 and HC3O, as well as the triplet states of H2C3 and H2C4 will be produced continuously in a supersonic free jet by a modified version of pyrolysis sources. Accompanying the research activity is a specified education effort appropriate to the development of a full, balanced, academic career. The study of the properties of combustion related free radicals is important in that it provides data and models for the improvement of combustion processes in internal combustion engines as well as in other power sources.