view article
Figure 3
Photoabsorption spectrum for the B1Σ+–X1Σ+(0,0) band of 12C16O, recorded with (a) the windowless cell at room temperature (blue), (b) the heated windowless cell (orange), and (c) the molecular jet setup (black). A reference room-temperature band oscillator strength was used to determine the column density and calibrate the absolute cross section (Stark et al., 1999aBB43); the instrumental spectral resolution is 0.23 cm−1. We assume that only v′′ = 0 is populated, except for the high-temperature spectrum for which 1.5% of the molecules are populating the first excited state. For the molecular jet, the backing and background pressures are 2 × 105 Pa and 0.6 Pa, respectively. The P and R branches of the rotational structure are clearly distinguishable; note how the J-level distribution depends on the temperature (see text for details).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 23| Part 4| July 2016| Pages 887-900
doi:10.1107/S1600577516006135
Follow J. Synchrotron Rad.
Sign up for e-alerts
E-alerts
Follow J. Synchrotron Rad. on Twitter
Twitter
Follow us on facebook
Facebook
Sign up for RSS feeds
RSS