JILA and Department of Electrical, Computer, and Energy Engineering, University of Colorado, Boulder, Colorado 80309-0440, USA.
JILA and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA.
J Chem Phys. 2017 Sep 28;147(12):124201. doi: 10.1063/1.4995237.
Cryogenic buffer-gas beam sources are capable of producing intense beams of a wide variety of molecules and have a number of advantages over traditional supersonic expansion sources. In this work, we report on a neon matrix isolation study of carbon clusters produced with a cryogenic buffer-gas beam source. Carbon clusters created by laser ablation of graphite are trapped in a neon matrix and detected with a Fourier-transform infrared spectrometer in the spectral range 4000-1000 cm. Through a study of carbon cluster production as a function of various system parameters, we characterize the behavior of the buffer-gas beam source and find that approximately 10-10 of each cluster is produced with each pulse of the ablation laser. These measurements demonstrate the usefulness of cryogenic buffer-gas beam sources for producing molecular beams of clusters.
低温缓冲气体束源能够产生各种分子的高强度束流，并且相对于传统的超声速膨胀源具有许多优势。在这项工作中，我们报告了使用低温缓冲气体束源产生的碳团簇的氖基质隔离研究。通过激光烧蚀石墨产生的碳团簇被捕获在氖基质中，并使用傅里叶变换红外光谱仪在 4000-1000 cm 的光谱范围内进行检测。通过研究各种系统参数对碳团簇生成的影响，我们对缓冲气体束源的行为进行了表征，并发现每次激光烧蚀脉冲大约会产生 10-10 个每个团簇。这些测量结果证明了低温缓冲气体束源对于产生团簇的分子束的有用性。
