総説

 

超臨界流体ジェット分光法の開発と高次系分子分光への応用

Development of Supercritical Fluid Jet Spectroscopy and Its Application for Spectroscopy of Supra Functional Systems

石内俊一, 藤井正明
Shun-ichi ISHIUCHI, Masaaki FUJII


難揮発性物質を超臨界流体に溶かし,これを直接真空中にジェット噴射することにより,気化及びジェット冷却する超臨界流体ジェット法を開発し,専用の高圧パルスバルブを開発した.これにより,25 MPa を越える高圧流体を短パルス化して真空中に導入できるようになり,十分なジェット冷却効果も得られることが分かった.本総説では,高圧パルスバルブの詳細とその応用例について紹介する.


We developed a supercritical fluid jet technique, which enables the vaporization and the jet-cooling of non-volatile molecules by supersonic expansion of the ir supercritical solutions to vacuum directly. For its purpose, a new high-pressure pulsed valve was developed. By using this pulsed valve, we could introduce the high-pressure fluid over 25 MPa into vacuum as a short gaseous pulse, and confirmed that we can obtain an enough jet-cooling condition. In this review, we will introduce a detail of the high-pressure pulsed valve and its application for the supercritical fluid jet spectroscopy.


Keywords: Supersonic jet laser spectroscopy, Supercritical fluid, Laser ionization, Mass spectrometry, Spectroscopy of isolated bio-molecules



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