Diode-laser spectroscopy of supersonic free jets |
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| Authors: | Y Mizugai H Kuze H Jones M Takami |
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| Institution: | 1. Department of Physics, Sophia University, 102, Kioi, Chiyoda-ku, Tokyo, Japan
2. The Institute of Physical and Chemical Research, 351, Wako, Saitama, Japan
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| Abstract: | A supersonic-free-jet infrared spectrometer has been constructed for investigation of molecular vibrational spectra at low rotational and vibrational temperatures. The sensitivity of measurement in a pulsed jet is increased by employing a phase-sensitive detection method synchronized with the pulse frequency. The performance of the spectrometer is examined for the absorption lines of the NH3 v 2 band. A rotational temperature as low as 16K is attained when seeded in He. Cold-jet spectra are demonstrated for thev 3 bands of PF5,34SF6, and182WF6. |
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