Infrared high-resolution emission spectroscopy of metal compounds produced by laser ablation

这个项目的目的是测试一个新的光谱学系统，以检测金属化合物产生的红外发射。实验被总结为：（1）用InSb阵列探测器构造一个gramspectrometer，用120 x140毫米大小的graming光谱仪，反射镜，切片等。Czerny-Turner配置已使用。光谱仪覆盖1-5微米，相对分辨率为40，000。用于阵列探测器的读取系统使用多通道A/D板、时钟发生器和驱动器板构建。控制是通过使用一个工作站SUN-IV进行的。（2） Construction of vacuum chamber for laser ablation。“The chamber installed a pulse nozzle， a metal rod with rotation mManagement ism， and pumped with a10”diffusion pump。根据观察N-D22-D2 O信号毫米波长度区域，它被转化为分子冷却到大约50 K。（3） Observation of Low-temperature matrix isolation spectra。As a test of ablation， we observed the vibration spectra of carbon chain molecules C y D23 y D2，C y D24 y D2，C y D25 y D2， and C y D212 y D2K Ar matrix， which was produced by the laser ablation from a carbon rod。（4）为傅立叶变换光谱仪构建数据采集系统.我们开发了一种新类型的脉冲激光器或脉冲放电系统，使用一台最近可用的芯片计算机。一个来自FT光谱仪的He-ne条纹信号已用于生产用于脉冲激光器的触发器或在芯片计算机处理后进行脉冲放电，以及一个新的数据采集系统也用于脉冲激光器的使用。

The purpose of this project is to test a new spectroscopic system for detecting infrared emission from metal compounds produced by laser ablation. Experiments are summarized as follows,(1) Construction of a grating spectrometer with an InSb array detectorThe spectrometer consists of a grating with the size of 120 x 140 mm, reflecting mirror, slits etc. A Czerny-Turner configuration was used. The spectrometer covers 1-5 μm with a relative resolution of 40,000. The read-out system for the array detector was constructed using multi-channel A/D board, clock generator, and driver board. The control was carried out by using a workstation SUN-IV.(2) Construction of vacuum chamber for laser ablation.The chamber installed a pulse nozzle, a metal rod with rotation mechanism, and pumped with a 10" diffusion pump. By observing the NィイD22ィエD2O signal millimeter wavelength region, it was conformed that the molecules were cooled down to about 50 K.(3) Observation of Low-temperature matrix isolation spectra.As a test of ablation, we observed the vibration spectra of carbon chain molecules CィイD23ィエD2, CィイD24ィエD2, CィイD25ィエD2, and CィイD212ィエD2 K Ar matrix, which was produced by the laser ablation from a carbon rod.(4) Construction of data acquisition system for Fourier transform spectrometer.We developed a new type data acquisition system for pulsed laser or pulse discharge by using a recently available a chip computer. A signal of He-Ne fringe from the FT spectrometer is used to produce a trigger for pulse laser or pulse discharge after processing by the chip computer, and a new data acquisition system was also arranged for the pulse laser usage.