| Autor: |
Woods, P.J., Blackmon, J.C., Rabban, M.T., Chen, A.A., Pierce, D.E., Kozub, R.L., Champagne, A.E., Smith, M.S., Hofstee, M.A., Hansper, V.Y., Shotter, A.C., Swartz, K.B., Johnson, B.A., Bardayan, D.W., Davinson, T., Cox, J.M., Parker, P.D., Ma, Z., Brune, C.R., Visser, D.W. |
| Jazyk: |
angličtina |
| Rok vydání: |
2000 |
| DOI: |
10.17615/g07h-pr96 |
| Popis: |
Knowledge of the [Formula Presented] reaction rate is important for understanding stellar explosions, but it was uncertain because the properties of an expected but previously unobserved [Formula Presented] state in [Formula Presented] were not known. This state would provide a strong s-wave resonance for the [Formula Presented] system and, depending on its excitation energy, could dominate the stellar reaction rate at temperatures above 0.2 GK. We have observed this missing [Formula Presented] state by measuring the [Formula Presented] excitation function with a radioactive [Formula Presented] beam at the ORNL Holifield Radioactive Ion Beam Facility (HRIBF). We find that the state lies at a center-of-mass energy of [Formula Presented] keV [Formula Presented] and has a width of [Formula Presented] The measured properties of the resonance are only consistent with a [Formula Presented] assignment. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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