TY - JOUR
T1 - A study on REMPI as a measurement technique for highly rarefied gas flows (analyses of experimental REMPI spectra in supersonic free molecular flows)
AU - Mori, Hideo
AU - Ishida, Toshihiko
AU - Aoki, Yoshinori
AU - Niimi, Tomohide
PY - 2000/5
Y1 - 2000/5
N2 - A measurement technique of thermodynamic variables with high sensitivity is strongly demanded for analyses of highly rarefied gas flows, gas-surface interaction, and so on.REMPI (Resonantly Enhanced Multiphoton Ionization) is a powerful optical tool because of its high sensitivity even in highly rarefied gas flows and ability to measure nonequilibrium among internal (translational, vibrational, and rotational) energy. In this paper, the MEMPI system is constructed and the REMPI spectra are measured at the center line of a free molecular flow. The fundamental properties of REMPI signal are also described. A method of Boltzmann plot using the spectral lines of different branches is proposed, determining electronic transition dipole moments in Hönl-London factors.
AB - A measurement technique of thermodynamic variables with high sensitivity is strongly demanded for analyses of highly rarefied gas flows, gas-surface interaction, and so on.REMPI (Resonantly Enhanced Multiphoton Ionization) is a powerful optical tool because of its high sensitivity even in highly rarefied gas flows and ability to measure nonequilibrium among internal (translational, vibrational, and rotational) energy. In this paper, the MEMPI system is constructed and the REMPI spectra are measured at the center line of a free molecular flow. The fundamental properties of REMPI signal are also described. A method of Boltzmann plot using the spectral lines of different branches is proposed, determining electronic transition dipole moments in Hönl-London factors.
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U2 - 10.1299/kikaib.66.1373
DO - 10.1299/kikaib.66.1373
M3 - Article
AN - SCOPUS:71249156474
SN - 0387-5016
VL - 66
SP - 1373
EP - 1379
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
IS - 645
ER -