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Search for resonant states in $^{10}$C and $^{11}$C and their impact on the primordial $^{7}$Li abundance
- Source :
- J.Phys.Conf.Ser., 7th Nuclear Physics in Astrophysics and 28th International Nuclear Physics Divisional Conference of the European Physical Society, 7th Nuclear Physics in Astrophysics and 28th International Nuclear Physics Divisional Conference of the European Physical Society, May 2015, York, United Kingdom. pp.012016, ⟨10.1088/1742-6596/940/1/012016⟩, Journal of Physics: Conference Series, Arias Montano. Repositorio Institucional de la Universidad de Huelva, instname
- Publication Year :
- 2015
- Publisher :
- HAL CCSD, 2015.
-
Abstract
- The cosmological 7Li problem arises from the signi cant discrepancy of about a factor 3 between the predicted primordial 7Li abundance and the observed one. The main process for the production of 7Li during Big-Bang nucleosynthesis is the decay of 7Be. Many key nuclear reactions involved in the production and destruction of 7Be were investigated in attempt to explain the 7Li de cit but none of them led to successful conclusions. However, some authors suggested recently the possibility that the destruction of 7Be by 3He and 4He may reconcile the predictions and observations if missing resonant states in the compound nuclei 10C and 11C exist. Hence, a search of these missing resonant states in 10C and 11C was investigated at the Orsay Tandem-Alto facility through 10B(3He,t)10C and 11B(3He,t)11C charge-exchange reactions respectively. After a short overview of the cosmological 7Li problem from a nuclear physics point of view, a description of the Orsay experiment will be given as well as the obtained results and their impact on the 7Li problem.
- Subjects :
- Nuclear reaction
Physics
History
010308 nuclear & particles physics
Primordial 7Li
Resonant states
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
7. Clean energy
01 natural sciences
Cosmology
Computer Science Applications
Education
Nuclear physics
Helium-4
Nucleosynthesis
Helium-3
0103 physical sciences
Isotopes of beryllium
010303 astronomy & astrophysics
Isotopes of helium
Radioactive decay
7Li abundance
Subjects
Details
- Language :
- English
- ISSN :
- 17426596
- Database :
- OpenAIRE
- Journal :
- J.Phys.Conf.Ser., 7th Nuclear Physics in Astrophysics and 28th International Nuclear Physics Divisional Conference of the European Physical Society, 7th Nuclear Physics in Astrophysics and 28th International Nuclear Physics Divisional Conference of the European Physical Society, May 2015, York, United Kingdom. pp.012016, ⟨10.1088/1742-6596/940/1/012016⟩, Journal of Physics: Conference Series, Arias Montano. Repositorio Institucional de la Universidad de Huelva, instname
- Accession number :
- edsair.doi.dedup.....f20afeaa9dbb583a0f9073e20bace46a