Vadillo J M, Laserna J J
Talanta. 1996 Jul;43(7):1149-54. doi: 10.1016/0039-9140(96)01851-6.
Laser-induced breakdown spectroscopy (LIBS) in air at atmospheric pressure has been used to study four geological samples belonging to different structural families. Atomic emission spectra of vanadinite, pyrite, garnet and a type of quartz (compostela's quartz) are shown. The 532 nm line of a Nd:YAG laser at an irradiance of 18 x 10(11) W cm(-2) was used. The precise focus of the beam allowed microanalysis of a 0.02 mm(2) surface area working in single-laser shot mode. The use of an intensified gateable charge-coupled-device (CCD) detector permitted time-resolved studies. The spectral lines have been assigned to transitions in the neutral charge state of the corresponding atom of the material under investigation. The behavior of different transitions with time delay are shown. In experiments, minor components contained in several minerals have been detected. This fact has been used to demonstrate the applicability of the technique to characterize and identify similar minerals.
在大气压力下的空气中，激光诱导击穿光谱法（LIBS）已被用于研究属于不同结构族的四种地质样品。展示了钒铅矿、黄铁矿、石榴石和一种石英（科米斯特拉石英）的原子发射光谱。使用了波长为532 nm的Nd:YAG激光，其辐照度为18×10¹¹ W/cm²。光束的精确聚焦允许在单激光脉冲模式下对0.02 mm²的表面积进行微分析。使用增强型可门控电荷耦合器件（CCD）探测器允许进行时间分辨研究。光谱线已被指定为所研究材料相应原子的中性电荷态中的跃迁。展示了不同跃迁随时间延迟的行为。在实验中，已检测到几种矿物中含有的次要成分。这一事实已被用于证明该技术在表征和识别相似矿物方面的适用性。
