ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The first experimental observation of the N2(G 3Δg→W 3Δu) transition is reported on here. The emission forms part of the spectrum of the so-called N2 beam afterglow, a spontaneous luminescence emitted by a molecular beam of N2 issuing from an intense d.c. discharge. Using a high performance charge-coupled device (CCD) optical multichannel detector, 18 bands of a new band system were observed with 2 A(ring) full width at half-maximum (FWHM) resolution in the 350–650 nm region. Three well-resolved v‘ progressions were analyzed. From a comparison with the known vibrational spacings in the N2(G) and N2(W) states, they could be assigned unambiguously to the N2(G→W) transition. This observation allows the energy of the N2(G) state to be determined as Te=89 505 cm−1 or 11.10 eV, thereby also fixing the location of the previously observed H(3Φu) state at Te=107 328 cm−1 or 13.31 eV.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.465134
