报告题目 | Rotational Control of Photodissociation Dynamics |
报告人 | 韩山雨 助理教授 |
报告人单位 | 南京大学 国际同位素效应研究中心 |
报告时间 | 2024年1月8日 (星期一) 下午16:30-17:30 |
报告地点 | 物质科研B楼1502会议室 |
主办单位 | 合肥微尺度物质科学国家研究中心 国际化学理论中心(ICCT) 精准智能化学重点实验室 |
报告摘要 | Rotational excitation of the parent molecule typically has a relatively small impact on both the dynamics and product-state distribution because of the small amount of energy involved in (thermal) rotational excitation as well as the weak coupling between the parent rotation and the dissociative coordinate. On some occasions, rotational excitation can be very important. Here, I present two examples where the parent rotation controls the photodissociation dynamics. One is the photodissociation of O3 in the Hartley band, in which the alternations of even and odd states in rotational distribution are dependent of initial rotational states of parent molecules due to a lambda doublet propensity. In another case, initial rotational states can strongly influence the vibrational state distribution of CO fragment in HCO photodissociation in the A-band. Such unique phenomenon is rationalized by the dependence of the lifetime of the vibronic resonance facilitated by the Renner-Teller interaction. These two examples underscore the importance of rotational control in photodissociation. |
报告人简介 | 韩山雨,2014年本科毕业于四川大学,2019年博士毕业于南京大学化工学院,师从谢代前教授,2022年在美国新墨西哥大学完成博士后工作,师从郭华教授,2023年2月起,在南京大学国际同位素效应研究中心任助理教授。主要研究方向是化学反应动力学中的非绝热问题,包括光解反应,碰撞猝灭反应。在一些基元反应中揭示了若干量子效应引起的微观反应机制,发展了量子动力学和透热势能面方法。现在主攻同位素非质量依赖分馏理,在基元反应水平探究非质量依赖分馏成因,重点考察动力学引起的非质量依赖分馏。 |