Title: Dissociative Excitation of Nitromethane Induced by Electron Impact in the Ultraviolet-Visible Spectrum Show Chinese title

Title: 硝基甲烷在紫外-可见光谱中由电子碰撞引起的离解激发

Abstract: The excitation of nitromethane CH$_3$NO$_2$, which is an important propellant and prototypic molecule for large class of explosives, has been investigated by electron impact and subsequent emission of photons in the UV-VIS spectral region between 300 nm and 670 nm. Emission spectrum of nitromethane was recorded at an electron energy of 50 eV. New dissociative excitation channels were discovered through the appearance of different CH, CN, NH, OH and NO bands, and the Balmer series of atomic hydrogen. In addition, relative emission cross sections were recorded for the transitions of selected fragments. The emission spectrum was captured at significantly higher resolution in comparison to previous studies. Show Chinese abstract

Abstract: 硝基甲烷 CH$_3$NO$_2$的激发通过电子碰撞以及在 300 纳米至 670 纳米的紫外-可见光谱区域随后的光子发射进行了研究，该分子是大量爆炸物的重要推进剂和原型分子。硝基甲烷的发射光谱在电子能量为 50 电子伏特时记录。通过不同 CH、CN、NH、OH 和 NO 带以及原子氢的巴尔末系列的出现，发现了新的离解激发通道。此外，还记录了选定碎片的相对发射截面。与之前的研究相比，发射光谱的分辨率显著提高。