DETERMINATION OF EXCITATION ORDER OF MULTIPHOTON PHOTODAMAGE

我们一直在评估为我们的行动收集的数据 DNA合成抑制光谱，以确定激发 阶，n，使用一般剂量反应方程，其中S是 标准化生存期，剂量D定义为Int.（ 辐照度I的单位为光子/s（（m2，n为光子数 单个激励事件或激励顺序所需）。 初步分析表明，所观察到的损害是由于 不同波长下的不同吸收物质--在700 nm处 损伤似乎来自单光子事件，在740 nm处， 来自于双光子事件 进一步的研究正在进行中， 这个观察。

We have been evaluating the data we have collected for our action spectrum of DNA synthesis inhibition to determine the excitation order, n, using the general dose-response equation, , where S is the normalized survival and the dose, D, is defined as Int. (The irradiance, I, is in photons/s((m2, and n is the number of photons required for a single excitation event, or the excitation order.) Preliminary analysis suggests that the observed damage is arising from different absorbing species at different wavelengths -- at 700 nm damage appears to be from one-photon events and at 740 nm it appears to be from two-photon events. Further studies are underway to confirm this observation.