Graduate Program of Photonics and Applied Physics, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea.
Appl Spectrosc. 2010 Nov;64(11):1289-97. doi: 10.1366/000370210793334963.
We report a new simple method for the signal enhancement of laser-induced breakdown spectroscopy using a pulsed buffer gas jet. The signal is enhanced up to more than 10 fold by using argon gas jets, which are injected through a pulsed nozzle onto the sample area to be analyzed. By synchronizing the buffer gas pulse with the laser pulse and optimizing the spatial arrangements between the gas jet and the sample surface, we have successfully exploited the useful properties of the buffer gas in open atmosphere. The signal-enhancement mechanism in our buffer gas jet has been discussed. Also, applications to various samples (metal, glass, and paper) have been demonstrated.
我们报告了一种新的简单方法，用于使用脉冲缓冲气体射流增强激光诱导击穿光谱的信号。通过使用氩气射流，信号增强了 10 多倍，氩气射流通过脉冲喷嘴喷射到要分析的样品区域。通过使缓冲气体脉冲与激光脉冲同步，并优化气体射流和样品表面之间的空间布置，我们成功地利用了开放大气中缓冲气体的有用特性。讨论了我们在缓冲气体射流中的信号增强机制。此外，还展示了该方法在各种样品（金属、玻璃和纸张）中的应用。
