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その場テラヘルツ・赤外吸収分光装置の開発

Development of apparatus for in-situ terahertz and infrared spectroscopy

山川 紘一郎; 那須 裕一*; 清水 元希*

Yamakawa, Koichiro; Nasu, Hirokazu*; Shimizu, Genki*

分子クラスターの構造や分子間振動モードの解明には、テラヘルツ域と赤外域の同時分光測定が有力である。本稿では、超高真空下で60-7000cm$$^{-1}$$の波数域における吸収分光測定を行う装置について解説した。

Terahertz and infrared spectroscopy is one of the powerful ways to elucidate the structures and vibrational modes of molecular clusters. We review an experimental apparatus for absorption spectroscopy in an ultra-high vacuum covering the wavenumber range of 60-7000 cm$$^{-1}$$, from the viewpoints of vacuum-, low-temperature-, and spectroscopy-techniques. We also introduce the terahertz and infrared spectrum of D$$_{2}$$O clusters isolated in an Ar matrix measured with this apparatus.

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