Search for resonant states in $^{10}$C and $^{11}$C and their impact on the primordial $^{7}$Li abundance - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse Access content directly
Conference Papers Year : 2018

Search for resonant states in $^{10}$C and $^{11}$C and their impact on the primordial $^{7}$Li abundance

I. Stefan
B. Fernandez-Dominguez
  • Function : Author
S. Fox
  • Function : Author
A. Laird
  • Function : Author
A. Matta
J. Mrazek
  • Function : Author
A. Parikh
  • Function : Author
A.M. Sanchez-Benitez
  • Function : Author

Abstract

The cosmological 7Li problem arises from the significant 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 deficit 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.
Fichier principal
Vignette du fichier
Hammache_2018_J._Phys. _Conf._Ser._940_012016.pdf (533.86 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

hal-01703777 , version 1 (03-06-2022)

Licence

Attribution

Identifiers

Cite

F. Hammache, A. Coc, N. de Séréville, I. Stefan, P. Roussel, et al.. Search for resonant states in $^{10}$C and $^{11}$C and their impact on the primordial $^{7}$Li abundance. 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⟩. ⟨hal-01703777⟩
161 View
18 Download

Altmetric

Share

Gmail Facebook X LinkedIn More