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Biomedical subjects

W Ubachs

Publications and source records attributed to W Ubachs.

32 records · Page 2Linked to original sources
PubMed1998

A Dense Grid of Reference Iodine Lines for Optical Frequency Calibration in the Range 571-596 nm

A high precision dense grid of reference lines in the hyperfine structure of the B-X system of molecular iodine (127I2) is presented. A simple parametrization has been derived, predicting the hyperfine line positions of the "t" components for vibrational bands (13-1) up to (18-1) and rotational quantum numbers J = (9-140). The analysis in this paper is based on Doppler-free saturation spectroscopy spectra used for calibration of more than 100 new components in the hyperfine structure of 127I2. The data presented contains a prediction (with 2 MHz accuracy) for the positions of 1584 "t" components in the rotational structure of iodine, covering the wavelength interval 571-596 nm. Copyright 1998 Academic Press. Copyright 1998Academic Press

Journal Article↗
PubMed1998

Cavity-Ring-Down Spectroscopy on the b1Sigma+g-X3Sigma-g (1,0) Band of Oxygen Isotopomers.

The b1Sigma+g-X3Sigma-g (1,0) band of 16O17O, 16O18O, 18O2, 17O18O, and 17O2 isotopomers was investigated employing the technique of cavity-ring-down spectroscopy. More than 400 transition frequencies of magnetic dipole lines were determined with a typical uncertainty of 0.01 cm-1. This work results in new or improved accurate molecular constants for the excited b1Sigma+g, v = 1 state of all isotopomers and for the X3Sigma-g, v = 0 ground state of 17O2. Copyright 1998 Academic Press.

Journal Article↗