Scissors modes: The elusive breathing overtone
| Autor: | Keisuke Hatada, Kuniko Hayakawa, Fabrizio Palumbo |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Physics
Nuclear and High Energy Physics Nuclear Theory Isovector Overtone Physics::Medical Physics Degenerate energy levels FOS: Physical sciences Observable Nuclear Theory (nucl-th) Amplitude Excited state Astrophysics::Solar and Stellar Astrophysics Physics::Chemical Physics Atomic physics Nucleon Energy (signal processing) |
| Zdroj: | Physical Review C. 88 |
| ISSN: | 1089-490X 0556-2813 |
| Popis: | The Two-Rotor Model predicts two levels above the Scissors Modes with degenerate intrinsic energy. They have $J^{\pi}= 0^+,2^+$ and are referred to as overtones. Their energy is below threshold for nucleon emission, which should make them observable. The $J^{\pi}=0^+$ overtone, that has the structure of an isovector breathing mode, has vanishing $E0$ amplitude so that cannot be directly excited, but it could be reached in the decay of the $J=2^+$ overtone. We discuss such a process and evaluate the $B(E2)$ strength, which, however, turns out to be very small. Comment: 4 pages, no figure |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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