Data acquisition interface for laser flash photolysis

激光闪光光解数据采集接口

• 批准号: 360134-2008
• 负责人: Bohne, Cornelia
• 金额: $ 3.24万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=361653
• 关键词: Data; acquisition; interface; laser; flash

Chemical reactions that occur on time scales of seconds or slower can be monitored using conventional equipment. However, many reactions occur on very fast time scales; for example on time scales that are a billion times faster than the blinking of the human eye. Understanding how these reactions proceed is essential for scientists to be able to alter them in a rational fashion. Laser flash photolysis (Lfp) is one of the primary techniques to follow fast reactions. Reactive intermediates are formed by laser irradiation and the kinetics are followed by changes in the absorption of the solution. The system at UVic was implemented in 1992 and urgently needs a new data acquisition  interface. Most of the detection hardware, such as monochromators, delay generators and oscilloscopes are in working order, but the computer and control software are obsolete. In the case of failure of the computer and interface the Lfp system will not be functional. Continued access to Lfp experiments is essential for the work done in the Bohne group on supramolecular dynamics and in the Wan group on mechanistic organic photochemistry, since the work of their students relies heavily on lfp experiments.

可以使用常规设备监测在秒或更慢的时间尺度上发生的化学反应。然而，许多反应发生在非常快的时间尺度上;例如，在比人类眨眼快十亿倍的时间尺度上。了解这些反应是如何进行的，对于科学家能够以合理的方式改变它们至关重要。激光闪光光解（Lfp）是跟踪快速反应的主要技术之一。通过激光照射形成活性中间体，并且动力学随后是溶液吸收的变化。UVic的系统于1992年实施，迫切需要一个新的数据采集接口。大部分的检测硬件，如单色器，延迟发生器和示波器是正常的，但计算机和控制软件是过时的。如果计算机和接口出现故障，Lfp系统将无法运行。继续获得LFP实验是必不可少的工作在Bohne组的超分子动力学和在万组的机械有机光化学，因为他们的学生的工作在很大程度上依赖于LFP实验。