Preliminary results for the F-19(p,alpha)O-16 reaction cross section measured at INFN-LNS
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F20%3A00540676" target="_blank" >RIV/61389005:_____/20:00540676 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1051/epjconf/202022702009" target="_blank" >http://dx.doi.org/10.1051/epjconf/202022702009</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/epjconf/202022702009" target="_blank" >10.1051/epjconf/202022702009</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Preliminary results for the F-19(p,alpha)O-16 reaction cross section measured at INFN-LNS
Popis výsledku v původním jazyce
The F-19(p,alpha)O-16 reaction is an important fluorine destruction channel in the proton-rich outer layers of asymptotic giant branch (AGB) stars and it might also play a role in hydrogen-deficient post-AGB star nucleosynthesis. At present, theoretical models overproduce F abundances in AGB stars with respect to the observed values, thus calling for further investigation of the nuclear reaction rates involved in the production and destruction of fluorine. In the last years, new direct and indirect measurements improved significantly the knowledge of F-19(p,alpha)O-16 cross section at deeply sub-Coulomb energies (below 0.8 MeV). However, those data are larger by a factor of 1.4 with respect the previous data reported in the NACRE compilation in the energy region 0.6-0.8 MeV. Using the Large High resolution Array of Silicons for Astrophysics (LHASA), we performed a new direct measurement of the F-19(p,alpha)O-16. The goal of this experiment is to reduce the uncertainties in the nuclear reaction rate of the F-19(p,alpha)O-16 reaction. Here, experimental details, the calibration procedure and angular distributions are presented.
Název v anglickém jazyce
Preliminary results for the F-19(p,alpha)O-16 reaction cross section measured at INFN-LNS
Popis výsledku anglicky
The F-19(p,alpha)O-16 reaction is an important fluorine destruction channel in the proton-rich outer layers of asymptotic giant branch (AGB) stars and it might also play a role in hydrogen-deficient post-AGB star nucleosynthesis. At present, theoretical models overproduce F abundances in AGB stars with respect to the observed values, thus calling for further investigation of the nuclear reaction rates involved in the production and destruction of fluorine. In the last years, new direct and indirect measurements improved significantly the knowledge of F-19(p,alpha)O-16 cross section at deeply sub-Coulomb energies (below 0.8 MeV). However, those data are larger by a factor of 1.4 with respect the previous data reported in the NACRE compilation in the energy region 0.6-0.8 MeV. Using the Large High resolution Array of Silicons for Astrophysics (LHASA), we performed a new direct measurement of the F-19(p,alpha)O-16. The goal of this experiment is to reduce the uncertainties in the nuclear reaction rate of the F-19(p,alpha)O-16 reaction. Here, experimental details, the calibration procedure and angular distributions are presented.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
10304 - Nuclear physics
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2020
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
EPJ Web of Conferences
ISBN
978-2-7598-9096-5
ISSN
2100-014X
e-ISSN
—
Počet stran výsledku
6
Strana od-do
02009
Název nakladatele
EDP Sciences
Místo vydání
Les Ulis
Místo konání akce
Catania
Datum konání akce
16. 6. 2019
Typ akce podle státní příslušnosti
EUR - Evropská akce
Kód UT WoS článku
000618965400028