NUCLEAR ELECTRIC MONOPOLE TRANSITION IN Ca$sup 4$$sup 2$
Journal Article
·
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
The O/sup +/ assignment to the 1.836 Mev second excited state in Ca/sup 42/is confirmed, by the observation of electric monopole election-positon pairs and internal conversion electrons corresponding to the crossover transition to the ground state The shape of the continuous positron spectrum from the EO pairs, as well as the ratio R = 9.0 plus or minus 1.8 of pairs to EO conversion electrons are consistent with theoretical predictions for an EO transition. 0.305 Mev internal conversion electrons are observed corresponding to the transition between the 1.836 Mev and the 2/sup +/, 1.523 Mev, first excited state. The ratio of 1.836 Mev to 0.305 Mev electron yields is 1.03 plus or minus 0.10. From these and other data the monopole strength parameter is determined to be 0.41. (auth)
- Research Organization:
- Columbia Univ., New York
- NSA Number:
- NSA-15-024370
- OSTI ID:
- 4027284
- Journal Information:
- Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 123; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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