A vacuum-ultraviolet source for the study of interstellar and prebiotic molecules

用于研究星际分子和益生元分子的真空紫外线源

• 批准号: RTI-2023-00407
• 负责人: Cooke, Ilsa
• 金额: $ 10.3万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=747829
• 关键词: vacuum; ultraviolet; source; study; interstellar

Vacuum-ultraviolet light (VUV; ~100 - 200 nm) is a class of ultraviolet light that requires a vacuum to travel freely since it is absorbed strongly by oxygen in the air, as well as by most other molecules. Because of this property, it has an important role in the photochemistry of small molecules, including organic molecules found in space and those thought to play a role in the origins of life. We request funds for a portable, table-top VUV source and VUV spectrometer. The equipment is urgently needed to support the our research programs of the PI (Cooke) and co-applicant (Momose), and will be used by other researchers at UBC to study environmental chemistry and quantum matter. The proposed VUV system will be used to ionize astrochemically-relevant carbon-bearing molecules for their mass spectrometric detection, and as a source for in situ VUV photochemistry of prebiotic molecules. These tools are critical to answer questions about the origins of carbon molecules in space and about how long these molecules can survive before they are destroyed by radiation. Examples of research to be supported include the formation of aromatic molecules in interstellar space, photochemistry of polycyclic aromatic hydrocarbons, and asymmetric photolysis of chiral amino acids. The applicant and co-applicant are already leaders in the areas of astrochemistry and photochemistry and are only lacking this critical VUV source to gain access to important results that cannot be obtained by any other more cost-effective method. These research tools will be an integral component of the equipment that will be used by a diverse set of undergraduate students, graduate students and postdoctoral fellows, and will support the research activities of many trainees in multiple research groups. They will provide valuable expertise and hands-on-training on chemical physics experiments, producing a skill set that is in high demand in Canada.

真空紫外光（VUV;约100 - 200 nm）是一类需要真空才能自由传播的紫外光，因为它被空气中的氧气以及大多数其他分子强烈吸收。由于这种性质，它在小分子的光化学中起着重要作用，包括在太空中发现的有机分子和那些被认为在生命起源中发挥作用的分子。我们要求提供资金，用于便携式台式真空紫外光源和真空紫外光谱仪。该设备迫切需要支持PI（Cooke）和共同申请人（Momose）的研究计划，并将被UBC的其他研究人员用于研究环境化学和量子物质。拟议的真空紫外系统将被用来分析与天体化学相关的含碳分子，用于质谱检测，并作为一个来源，在原位真空紫外光化学的益生元分子。这些工具对于回答有关太空中碳分子的起源以及这些分子在被辐射摧毁之前可以存活多久的问题至关重要。支持的研究实例包括星际空间中芳香分子的形成、多环芳烃的光化学和手性氨基酸的不对称光解。申请人和共同申请人已经是天体化学和光化学领域的领导者，只是缺乏这种关键的真空紫外光源，无法获得任何其他更具成本效益的方法无法获得的重要结果。这些研究工具将成为各种本科生、研究生和博士后研究员使用的设备的组成部分，并将支持多个研究小组中许多受训人员的研究活动。他们将提供化学物理实验方面的宝贵专业知识和实践培训，培养加拿大高需求的技能。