DECAY OF Be$sup 9$ (2.43-Mev STATE)
The decay of the 2.43-Mev state of Be/sup 9/ is treated theoretically. Of the open two-body decay channels all but one involve a nuclear state, the energy of which is not well defined. The usual formalisms were generalized to take this into account. The estimate of the decay rates is made by means of a variational internal wave function for the Be/sup 9*/ state, based upon the alpha- particle model. It is found that the principal mode of decay is to He/sup 5/ + He/sup 4/. Model-dependent arguments are given to show that decay to the ground state of Be/sup 8/ should be inhibited. Furthermore, the momentum and angular distributions of alphas emitted in the decay through several two-particle decay modes are computed. These latter calculations do not assume any specific nuclear model, but depend on the weak assumption that the state is excited by a direct reaction. Comparison with recent measurements indicates that in addition to the He/sup 5/ + He/sup 4/ decay, approximately 7% of the decay occurs to the ground sthte of Be/sup 8/, which is consistent with our calculations. (auth)
- Research Organization:
- Univ. of Washington, Seattle
- NSA Number:
- NSA-14-015306
- OSTI ID:
- 4139658
- 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- Physical Review (U.S.) Superseded in part by Phys.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, Vol. Vol: 118; Other Information: Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
Study of the 18-21 MeV region of /sup 12/C through charged-particle decays
INVESTIGATION OF THE NUCLEAR PHOTO-EFFECT ON Be$sup 9$ AND H$sup 2$ WITH DISCRETE GAMMA ENERGIES BETWEEN 2.75 AND 9.0 Mev