THE PARITY OF THE 4.97 Mev LEVEL IN Ne$sup 2$$sup 0$
Journal Article
·
· Nuclear Physics (Netherlands) Divided into Nucl. Phys. A and Nucl. Phys. B
The parity of the level at 4.97 Mev in Ne/sup 20/ was determined to be negative by measuring the linear polarization of 3.34 Mev gamma rays emitted when this level decays to the first excited state of Ne/sup 20/ at 1.63 Mev. The level was excited by the reaction Ne/sup 20/(p p' gamma ) at an incident proton energy of 7.20 Mev. At this energy, the direct distribution of the 3.34 Mev gamma rays with respect to the proton beam was measured and was not isotropic. The linear polarization correlation was measured by the method of Compton scattering and this combined with the direct correlation established that the 4.97 Mev level had opposite parity to that of the 1.63 Mev state. Since the latter is positive, the parity of the 4.97 Mev level is negative. Previous experiments had shown that its spin is 2 and this combination of spin and parity excludes the 4.97 Mev level from participation in helium thermonuclear reactions. (auth)
- Research Organization:
- Atomic Energy of Canada Ltd., Chalk River, Ont.
- NSA Number:
- NSA-17-019307
- OSTI ID:
- 4727803
- Journal Information:
- Nuclear Physics (Netherlands) Divided into Nucl. Phys. A and Nucl. Phys. B, Journal Name: Nuclear Physics (Netherlands) Divided into Nucl. Phys. A and Nucl. Phys. B Vol. Vol: 41; ISSN NUPHA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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