# LASER SPECTROSCOPY OF 3$\nu$, 5$\nu$, and 6$\nu$ VIBRATION - ROTATION BANDS OF HBr

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 Title: LASER SPECTROSCOPY OF 3$\nu$, 5$\nu$, and 6$\nu$ VIBRATION - ROTATION BANDS OF HBr Creators: Nishimiya, N.; Yukiya, T.; Suzuki, M. Issue Date: 1996 Abstract: The vibrartion- rotation spectrum of $H^{79/81}$ Br have been studied using a GaAs semiconductor laser and a titanium sapphire ring laser in the near infrared region. The rotational fine structures up to J = 15 could be detected using a 20 m absorption cell. About 100 lines have been assigned in $v = 3 \leftarrow 0, 5 \leftarrow 0$ and 6 $\leftarrow$ 0 bands with a resolving power of $0.001 cm^{-1}$. Spectroscopic constants have been calculated with a least-squares fitting procedure by using the spectroscopic constants of $v = 0$ reported by Lonardo and Fusina ($l$). The values in $cm^{-1}$ are determined as below; [FIGURE] The numbers given in the upper rows are those of $I^{79}Br$. The Dunham#### coefficients of HBr have also been determined by a joint analysis with the constants reported by the references (1, 2). URI: http://hdl.handle.net/1811/13493 Other Identifiers: 1996-RA-09