Accurate determination of wavenumbers for iodine molecular lines in the red spectral region期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Accurate determination of wavenumbers for iodine molecular lines in the red spectral region

Authors:	S Rakowsky D Zimmermann W E Ernst

Institution:	(1) Institut für Strahlungs-und Kernphysik, Technische Universität, Hardenbergstrasse 36, D-1000 Berlin 12;(2) Institut für Molekülphysik, Freie Universität, Arnimallee 14, D-1000 Berlin 33

Abstract:	The hyperfine structure of various absorption lines of molecular iodine with wavenumbers between 12980 and 13890 cm^–1 has been resolved using Doppler-free polarization spectroscopy. The wavenumbers of theo-component of 17 rovibrational lines of I₂ due to the transitionB ³ _ou ⁺ –X¹ _g ⁺ with even rotational quantum numbers have been determined with an accuracy of 0.001 cm^–1. A comparison of the centers of gravity of these 17 lines with the values of the iodine atlas of Gerstenkorn et al. yields a difference of $\delta \tilde v = \tilde v_{c.g} - \tilde v_{atl} = - (1.8 \pm 1.2)x 10 - 3 cm^{ - 3}$ thus corroborating the data of the iodine atlas in the red region within limits of error.

Keywords:	3320K 4272
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