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arXiv 1707.03312physics.chem-ph
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用低温缓冲气体束源制备碳团簇$\text{C}_3$到$\text{C}_{12}$

Production of carbon clusters $\text{C}_3$ to $\text{C}_{12}$ with a cryogenic buffer-gas beam source

Cameron J. E. Straatsma, Maya I. Fabrikant, Gary E. Douberly, Heather J. Lewandowski

摘要:

低温缓冲气体射束源能够产生各种分子的强射束,并且与传统的超音速膨胀源相比具有许多优点。在这项工作中,我们报告了一个氖矩阵隔离的研究与低温缓冲气体束源产生的碳团簇。通过激光烧蚀石墨产生的碳团簇被捕获在氖基质中,并用傅里叶变换红外光谱仪在光谱范围$4000-1000~\text{cm}^{-1}$内检测。通过研究碳团簇的产生随各种系统参数的变化,我们表征了缓冲气体束源的行为,发现每个团簇的大约$10^{11}-10^{12}$是随着烧蚀激光的每个脉冲产生的。这些测量结果表明,低温缓冲气体束源用于产生团簇分子束是有用的。

英文摘要:

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 $4000-1000~\text{cm}^{-1}$. 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 $10^{11}-10^{12}$ 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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