Interdisciplinary Studies of H3+: Precision Spectroscopy, Reaction Dynamics, and Astronomical Observations

H3 的跨学科研究：精密光谱学、反应动力学和天文观测

• 批准号: 0855633
• 负责人: Benjamin McCall
• 金额: $ 46.56万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0855633&HistoricalAwards=false
• 关键词: Interdisciplinary; Studies; H3+; Precision; Spectroscopy

In this investigation, both laboratory studies and astronomical observations will be performed related to H3+, the simplest molecule with more than two atoms. The infrared spectrum of H3+ will be measured with record precision, enabling new tests of theoretical calculations. The reaction of H3+ with molecular hydrogen (H2) will be measured at the lowest temperatures yet, to probe interesting quantum mechanical effects and support astronomical observations. The infrared spectrum of the larger hydrogen ion H5+ will also be measured to provide constraints on the reaction mentioned above. In terms of astronomy, large telescopes will be used to measure the abundance of H3+ in various clouds of gas between the stars, and the effect of the reaction of H3+ with H2 on interstellar H2 and H3+ will be modeled.This program can be expected to have several broader impacts because of its interdisciplinary nature and its development of novel experimental approaches. Both graduate and undergraduate students will be trained in the young interdisciplinary field of astrochemistry. The integration of research and education will continue to be fostered through the development of new courses in astrochemistry. Interactions between scientists who consider themselves primarily physicists, chemists, or astronomers will be encouraged by an astrochemistry seminar series and also through the organization of a regional astrochemistry consortium.

在这次调查中，实验室研究和天文观测都将与H3+有关，H3+是具有两个以上原子的最简单分子。H3+的红外光谱将以创纪录的精度进行测量，从而可以对理论计算进行新的测试。H3+与氢分子（H2）的反应将在迄今为止最低的温度下进行测量，以探索有趣的量子力学效应并支持天文观测。较大的氢离子H5+的红外光谱也将被测量，以提供上述反应的约束条件。在天文学方面，将使用大型望远镜测量恒星间各种气体云中H3+的丰度，并模拟H3+与H2的反应对星际H2和H3+的影响。由于其跨学科性质和新实验方法的发展，该计划可以预期产生几个更广泛的影响。研究生和本科生都将接受天体化学这一年轻的跨学科领域的培训。通过开设天体化学新课程，将继续促进研究与教育的结合。天体化学系列研讨会和区域天体化学联合会的组织，将鼓励主要以物理学家、化学家或天文学家自诩的科学家之间的互动。