Two-Proton Emission from the Ground State ofO12
| Autor: | D. G. Sarantites, R. Pfaff, B. M. Sherrill, Michael Thoennessen, Assen S. Kirov, R. J. Charity, S. Yokoyama, Takashi Kubo, L. G. Sobotka, E. Ramakrishnan, Margareta Hellström, R. A. Kryger, J. H. Kelley, J. A. Winger, N. J. Robertson, J. Dempsey, A. Azhari |
|---|---|
| Rok vydání: | 1995 |
| Předmět: | |
| Zdroj: | Physical Review Letters. 74:860-863 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.74.860 |
| Popis: | The three-body decay $^{12}\mathrm{O}\ensuremath{\rightarrow}2p+^{10}\mathrm{C}$ was studied following production via single-neutron stripping from a radioactive $^{13}\mathrm{O}$ projectile. This is the first observation of two-proton emission from an unbound ground state where the one-proton emission channel is energetically closed beyond the lightest case of $^{6}\mathrm{Be}$. No evidence for $^{2}\mathrm{He}$ emission is seen, despite predictions for a large diproton branching ratio. An upper limit of 7% (95% C.L.) is established for this decay branch. The implications of the small diproton branching ratio observed here and seen previously in $^{6}\mathrm{Be}$ are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|