Magnetic Pair Spectrometer Studies of Electromagnetic Transitions in C14 and N14
An intermediate-image pair spectrometer was used to study electromagnetic transitions in C14 and N14. Energy levels in these nuclei were populated by means of the eron energies between 1.9 and 3.1 Mev. In C14 a 6.58-Mev transition was observed in the internal pair spectrum but not in the external pair spectrum. From this a definite assignment of J pi = O+ can be made for the C14 6.58-Mev level. In N14 the branching ratios of the 5.69 yields 0 and 5.69 yields 2.31 transitions were determined to be 37 plus or minus 2%, respectively. The energy differences between close-lying pair lines were measured with sufficient accuracy to allow limits to be placed on the lifetimes of some states in C14 and N14. Thus, it was determined that the mean lifetime of the C14 6.58-Mev level is greater than 4 x 10-13 sec. (auth)
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- Sponsoring Organization:
- US Atomic Energy Commission (AEC)
- DOE Contract Number:
- AT(30-2)-GEN-16
- NSA Number:
- NSA-17-040107
- OSTI ID:
- 4621625
- Report Number(s):
- BNL--6904
- Journal Information:
- Physical Review, Journal Name: Physical Review Journal Issue: 2 Vol. 132; ISSN PHRVAO; ISSN 0031-899X
- Country of Publication:
- United States
- Language:
- English
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