YAG laser for laser flash phtolysis facility

许多化学反应发生得太快，肉眼看不到。化学反应发生的时间可能比人类眨眼的速度快10亿倍。了解这些反应是如何发生的，为我们能够对其进行有利的操作提供了必要的信息。激光闪光光解(LFP)是一种用于研究这些快速反应的技术。反应是从激光开始的，激光是一种非常强烈的一种颜色的光源，在短脉冲(10 ns，测量由于反应物消失或产物形成而引起的颜色变化是在激光脉冲后发生的化学反应之后发生的。这项提案要求资金用于更换维多利亚大学LFP设施中使用的YAG激光器。该激光器已有14年的历史，最近两次出现故障，第一次停机时间为4周，第二次停机时间为2周。它目前只起到了微不足道的作用。该激光器没有由其制造商进行维护，因为它已经过时，并且由于这个原因，它的寿命已到了尽头。持续获得LFP实验对于Bohne(超分子动力学)和WAN(机械有机光化学)小组所做的工作至关重要，因为他们的所有工作都依赖于LFP实验。LFP实验对于Frank(光磁学)和Mitchell(光致变色材料)小组也是至关重要的，因为LFP实验对于提供对这些小组所研究材料的光致变色性质的机械洞察至关重要。

Many reactions occur too fast to be seen by the naked eye.  Chemical reactions can occur in times that are a billion times faster than the blinking of the human eye.  Understanding how these reactions happen provides essential information to be able to manipulate them to our advantage.  Laser flash photolysis (LFP) is a technique employed to study these fast reactions.  The reaction is started with a laser, which is a very intense light source of one color that delivers the light in a short pulse (10 ns, ten one billionth of a second).  Measuring the color change due to reactant disappearance or product formation follows the chemical reactions that occur after the laser pulse.  This proposal is requesting funds for the replacement for the YAG laser used in the LFP facility at the University of Victoria.  This laser is 14 years old and recently failed twice with a down time of 4 weeks on the first occasion and 2 weeks on the second occasion. It is currently only working marginally. The laser is not maintained by its manufacturer because it is obsolete and for this reason it has reached the end of its lifetime. Continued access to LFP experiments is essential for the work done in the Bohne (supramolecular dynamics) and Wan (mechanistic organic photochemistry) groups, since all of their work relies on LFP experiments.  Access is also critical for the Frank (photomagnetism) and Mitchell (photochromic materials) groups, since LFP experiments are essential to provide mechanistic insights into the photochromic properties of the materials studied in these groups.