Search for resonant states in C-10 and C-11 and their impact on the primordial Li-7 abundance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F18%3A00490018" target="_blank" >RIV/61389005:_____/18:00490018 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1742-6596/940/1/012016" target="_blank" >http://dx.doi.org/10.1088/1742-6596/940/1/012016</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/940/1/012016" target="_blank" >10.1088/1742-6596/940/1/012016</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for resonant states in C-10 and C-11 and their impact on the primordial Li-7 abundance

Popis výsledku v původním jazyce

The cosmological Li-7 problem arises from the significant discrepancy of about a factor 3 between the predicted primordial Li-7 abundance and the observed one. The main process for the production of Li-7 during Big-Bang nucleosynthesis is the decay of Be-7. Many key nuclear reactions involved in the production and destruction of Be-7 were investigated in attempt to explain the Li-7 deficit but none of them led to successful conclusions. However, some authors suggested recently the possibility that the destruction of Be-7 by He-3 and He-4 may reconcile the predictions and observations if missing resonant states in the compound nuclei C-10 and C-11 exist. Hence, a search of these missing resonant states in C-10 and C-11 was investigated at the Orsay Tandem-Alto facility through B-10(He-3,t)C-10 and B-11(He-3,t)C-11 charge-exchange reactions respectively. After a short overview of the cosmological Li-7 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 Li-7 problem.

Název v anglickém jazyce

Search for resonant states in C-10 and C-11 and their impact on the primordial Li-7 abundance

Popis výsledku anglicky

The cosmological Li-7 problem arises from the significant discrepancy of about a factor 3 between the predicted primordial Li-7 abundance and the observed one. The main process for the production of Li-7 during Big-Bang nucleosynthesis is the decay of Be-7. Many key nuclear reactions involved in the production and destruction of Be-7 were investigated in attempt to explain the Li-7 deficit but none of them led to successful conclusions. However, some authors suggested recently the possibility that the destruction of Be-7 by He-3 and He-4 may reconcile the predictions and observations if missing resonant states in the compound nuclei C-10 and C-11 exist. Hence, a search of these missing resonant states in C-10 and C-11 was investigated at the Orsay Tandem-Alto facility through B-10(He-3,t)C-10 and B-11(He-3,t)C-11 charge-exchange reactions respectively. After a short overview of the cosmological Li-7 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 Li-7 problem.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/LM2015076" target="_blank" >LM2015076: Système de Production d’Ions Radioactifs Accélérés en Ligne – účast České republiky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Journal of Physics Conference Series

ISBN

—

ISSN

1742-6588

e-ISSN

—

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

IOP Publishing

Místo vydání

Bristol

Místo konání akce

York

Datum konání akce

18. 5. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000431673700015