NSF Young Investigator/Synchrotron Fragmentation Pathway of Small Molecules

NSF 青年研究员/小分子同步加速器碎裂途径

• 批准号: 9257434
• 负责人: Tricia Ferrett
• 金额: $ 31.25万
• 依托单位: Carleton College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1999-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9257434&HistoricalAwards=false
• 关键词: NSF; Young; Investigator; Synchrotron; Fragmentation

Tricia A. Ferrett (Carleton College), is the recipient of A NSF Young Investigator award for studies in Experimental Physical Chemistry. Her project involves the use of synchrotron radiation to induce fragmentation of small molecules by excitation of their core electrons. Prof. Ferrett will assemble a time-of-flight mass spectrometer and timing circuitry to permit simultaneous detection and energy characterization of two or more fragmentation products. By controlling the incident photon energy and the type of molecule to be irradiated, Prof. Ferrett will elucidate systematic features of fragmentation pathways. This is important because excitation of core electrons as a starting point for fragmentation leads to different pathways than those activated by low energy photons, and detailed knowledge of the new pathways translates to an improved understanding of chemical bonds in general. %%% Prof. Tricia A. Ferrett (Carleton College), will use X-rays to induce small molecules to fall apart. By measuring simultaneously the energies of several fragments, Prof. Ferrett will develop an increased understanding of the detailed way in which the absorption of the X-rays leads to molecular disruption. Particular molecules to be studied are of general importance in the chemistry of the atmosphere and chemistry at catalytic surfaces.

Tricia A.Ferrett(Carleton学院)，是NSF实验物理化学研究的青年研究员奖的获得者。她的项目涉及使用同步辐射通过激发小分子的核心电子来诱导其碎裂。费雷特教授将组装飞行时间质谱仪和计时电路，以允许同时检测两个或更多碎片产物并进行能量表征。通过控制入射光子能量和要照射的分子类型，费雷特教授将阐明碎裂途径的系统特征。这一点很重要，因为作为碎裂的起点，激发核心电子会导致不同于低能光子激活的路径，而对新路径的详细了解通常有助于更好地理解化学键。Carleton学院的Tricia A.Ferrett教授将使用X射线诱导小分子解体。通过同时测量几个碎片的能量，费雷特教授将加深对X射线吸收导致分子破裂的详细方式的理解。要研究的特定分子在大气化学和催化表面化学中具有普遍重要性。