Structure in the Photo-Ionization Continuum of N_{2} Near 500 Å
Abstract
The absorption spectrum of neutral N2 has been studied in the 100-600-A region, utilizing the pure continuum radiated by the -MeV electron synchrotron as a background source. A 3-m grazingAncidence spectrograph of 0.06-A was used to photograph the spectrum. Discrete structure was observed only in the 470-570-A region. This previously unobserved structure appears to correspond basically to a single state of neutral N2 having vibrational spacings very similar to those of the known 2 state of N2+. There are signs of a second state; the two states appear to be members of a Rydberg series converging onto this C state of N2+ at 23 6 eV. The structure involves transitions to auto-ionizing electronic states lying at higher energies than any previously reported for neutral N2.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- February 1966
- DOI:
- 10.1086/148533
- Bibcode:
- 1966ApJ...143..552C