Strong Field Chemistry

强场化学

• 批准号: 0518497
• 负责人: Robert Levis
• 金额: $ 40.5万
• 依托单位: Temple University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0518497&HistoricalAwards=false
• 关键词: Strong; Field; Chemistry

Robert Levis of Temple University is supported by the Experimental Physical Chemistry Program to continue his research aimed at understanding and exploiting the interaction of intense, ultrafast laser pulses with polyatomic molecules. The experimental program focuses on three interconnected areas: 1) understanding strong-field nonadiabatic excitation of molecules, 2) ionization/dissociation in the mid-infrared, examining the role of charge transfer states in strong field photodissociation, and 3) the application of strong field laser-based methods for controlling gas phase biomolecule dissociation. Work will occur in two theoretical areas, specifically continuing the development of simple models including Landau-Dykne-type excitation and multi-electron nonadiabatic excitation schemes, and continuing a collaboration to develop Ehrenfest-type dynamics to understand and control better the excitation of polyatomic molecules in intense laser fields. Outcomes are expected to enable new understanding of the photophysical processes occurring in larger and more complex molecular systems in the presence of intense, ultrafast laser light.Outcomes from this research, in the long run, are expected to assist in the development of high technology chemistries. Eventual applications in natural products/complex molecules synthesis, biomedical diagnostics, nanomaterials synthesis, molecular electronics, and chemical/biological sensor development are possible.

天普大学的罗伯特·莱维斯（Robert Levis）得到了实验物理化学计划的支持，继续他的研究，旨在理解和利用强超快激光脉冲与多原子分子的相互作用。 该实验计划侧重于三个相互关联的领域：1）理解分子的强场非绝热激发，2）中红外电离/解离，检查电荷转移态在强场光解离中的作用，以及3）基于强场激光的方法用于控制气相生物分子解离的应用。 工作将发生在两个理论领域，特别是继续发展简单的模型，包括朗道-戴克内型激发和多电子非绝热激发计划，并继续合作，以发展埃克塞特型动力学，以更好地理解和控制多原子分子在强激光场中的激发。 研究结果有望使人们对更大更复杂的分子系统在强超快激光作用下的物理过程有新的认识，从长远来看，这项研究的结果有望有助于高科技化学的发展。 最终应用于天然产物/复杂分子合成，生物医学诊断，纳米材料合成，分子电子学和化学/生物传感器开发是可能的。