Excitation of the B $sup 3$Pi/subg/ states of N$sub 2$ by electron impact
Radiative lifetime measurements of 13 vibrational levels of the B $sup 3$Pi/subg/ state of N$sub 2$ have been obtained at 50 eV incident electron energy and 30 mTorr N$sub 2$ gas pressure using a 50-$mu$sec electron excitation pulse. Two radiative decay components with lifetimes of approximately 5 and 25 $mu$sec are observed in each case. The short-lived component is identified as the contribution from direct excitation of the B $sup 3$Pi/subg/ state. The long- lived cascade contribution is observed to decrease from 37% of the total B $sup 3$Pi/subg/$Yields$A $sup 3$$Sigma$/subu/$sup +$(v', v'') radiation for the v' = 0 vibrational level to 15% for the v' = 12 level and is consistent with theoretical predictions by Cartwright et al.
- Research Organization:
- Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701
- NSA Number:
- NSA-33-001855
- OSTI ID:
- 4169609
- Journal Information:
- Phys. Rev., A, v. 12, no. 2, pp. 468-474, Journal Name: Phys. Rev., A, v. 12, no. 2, pp. 468-474; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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