0905 REMPIを用いた窒素分子線の回転エネルギー計測(OS9-2 先端的熱流体計測法,オーガナイズドセッション)

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  • 0905 Measurement of rotational energy of nitrogen molecular beam using REMPI

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To analyze high Knudsen number flows, interactions of gas molecules and solid surfaces are very important. Molecular beams have been widely used to diagnose these interactions. While properties such as translational energy and momentum of molecular beam have been analyzed very well, there are very few reports analyzing rotational energy of diatomic or polyatomic molecular beam experimentally. Resonantly enhanced multi-photon ionization (REMPI) is a spectroscopic technique, which is able to measure molecular internal energy in very low density gas flows. In this study, we have tried to detect a nitrogen molecular beam by 2R+2 REMPI, and analyzed rotational energy distribution of nitrogen molecules in the molecular beam.

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