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THE APPLICATION OF A VUV-FT SPECTROMETER AND SYNCHROTRON RADIATION SOURCE TO MEASUREMENTS OF: THE $\gamma (3,0)$ AND THE $\beta (6,0)$ BANDS OF NO

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/19010

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Title: THE APPLICATION OF A VUV-FT SPECTROMETER AND SYNCHROTRON RADIATION SOURCE TO MEASUREMENTS OF: THE $\gamma (3,0)$ AND THE $\beta (6,0)$ BANDS OF NO
Creators: Leung, K.- S.; Cheung, A. S.- C.; Yoshino, K.; Esmond, J. R.; Parkinson, W. H.; Thorne, A. P.; Murray, J. E.; Cox, G.; Learner, R. C. M.; Ito, K.; Matsui, T.; Imajo, Takashi
Issue Date: 1998
Abstract: The Imperial College VUV-FT spectrometer has been equipped with optically contacted, beam splitters made from single crystals of $MgF_{2}$ and the short wavelength performance has been demonstrated down to $\sim 139 nm$. To make ultrahigh resolution VUV photoabsorption cross section measurements with the VUV-FTS require a pure continuum source below 190 nm and the best choice: is synchrotron radiation from a storage ring facility. Moreover a suitable zero-dispersion predisperser is available on beam line 12-B of the synchrotron radiation source at the Photon Factory. We therefore moved the IC VUV FT spectrometer from Imperial College, London to the Photon Factory, Japan to exploit the bandwidth-limited synchrotron radiation as a background source for FT absorption spectroscopy. The VUV-FT spectra of the $A {^{2}}\Sigma^{+} - X {^{2}}\Pi(3,0)$ and the $B {^{2}}\Pi - X {^{2}}\Pi(6,0)$ bands of NO have been recorded with an instrumental resolution of $0.06 cm^{-1}$ (about a half of the Doppler widths). Accurate line positions and cross sections of the A(3) and B(6) levels have been determined. Absolute band oscillator strengths from the integration of cross sections of individual line have been obtained.
URI: http://hdl.handle.net/1811/19010
Other Identifiers: 1998-TB-09
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