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ZEEMAN EFFECT OF TRANS-GLYOXAL STUDIED BY DOPPLER-FREE TWO-PHOTON ABSORPTION SPECTROSCOPY

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/20602

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Title: ZEEMAN EFFECT OF TRANS-GLYOXAL STUDIED BY DOPPLER-FREE TWO-PHOTON ABSORPTION SPECTROSCOPY
Creators: Misono, Masatoshi; Wang, Jinguo; Kato, Hajime; Baba, Masaaki
Issue Date: 2002
Abstract: Doppler-free two-photon absorption (DFTPA) spectroscopy was applied to the $A^{1} A_{u} (v_{7} = 1) \leftarrow X^{1} A_{g} (v = 0)$ transition of trans-glyoxal in the magnetic field of 6 T. In the present experiment, $Q_{Q}$ transitions, in which the initial and the final state have the same J and K, were observed. Here J is the total angular momentum and K is its component along the figure axis. The observed line profiles and the magnitude of Zeeman splitting showed the peculiar dependences on J, K, and on the laser polarization. DFTPA spectra were measured when the laser polarization was parallel to the magnetic field ($\pi$ pump) and when it was perpendicular to the magnetic field ($\sigma$ pump). Both for $\pi$ and $\sigma$ pump, the magnitude of the Zeeman splitting become large as K increases for given J, and it also become large as J increases for $K = J$ transitions. When J is given, for $\pi$ pump and large K, the line intensities take the maximum values at $M = \pm J$ and the minimum value at $M = 0$, where M is the component of J along the magnetic field, while the line intensities for $\sigma$ pump show the opposite M-dependences. The dependences of the line intensities on J, K and M were also studied theoretically, and the results explained the observed ones well.
URI: http://hdl.handle.net/1811/20602
Other Identifiers: 2002-TF-08
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