Direct measurement of the 19F(p,α0)16O reaction at Ecm = 0.4-0.9 MeV using the LHASA detector array

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00571106" target="_blank" >RIV/61389005:_____/23:00571106 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1140/epja/s10050-023-00957-1" target="_blank" >https://doi.org/10.1140/epja/s10050-023-00957-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epja/s10050-023-00957-1" target="_blank" >10.1140/epja/s10050-023-00957-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Direct measurement of the 19F(p,α0)16O reaction at Ecm = 0.4-0.9 MeV using the LHASA detector array

Popis výsledku v původním jazyce

The 1(19)F(p,a(0))(16) reaction is of paramount importance for understanding the fluorine abundance in the outer layers of asymptotic giant branch (AGB) stars and it might also play a role in hydrogen-deficient post-AGB star nucleosynthesis. Theoretical models overestimate F abundances in AGB stars with respect to the observed values, thus calling for further investigation of the reactions involved in the fluorine nucleosynthesis. In the last years, new direct and indirect measurements improved significantly the knowledge of the F-19(p,a(0))(16) cross section at deeply sub-Coulomb energies (below 0.8 MeV). Those data are larger by a factor of about 1.4 with respect to the previous data reported in the NACRE compilation in the energy region 0.6-0.8 MeV. In order to solve these discrepancies, here we present a new direct experiment performed using a silicon strip detector array (LHASA - Large High-resolution Array of Silicon for Astrophysics). Our results clearly confirm the trend of the latest experimental data in the energy region of interest, pointing towards a larger S-factor value than the one reported in the NACRE compilation.

Název v anglickém jazyce

Direct measurement of the 19F(p,α0)16O reaction at Ecm = 0.4-0.9 MeV using the LHASA detector array

Popis výsledku anglicky

The 1(19)F(p,a(0))(16) reaction is of paramount importance for understanding the fluorine abundance in the outer layers of asymptotic giant branch (AGB) stars and it might also play a role in hydrogen-deficient post-AGB star nucleosynthesis. Theoretical models overestimate F abundances in AGB stars with respect to the observed values, thus calling for further investigation of the reactions involved in the fluorine nucleosynthesis. In the last years, new direct and indirect measurements improved significantly the knowledge of the F-19(p,a(0))(16) cross section at deeply sub-Coulomb energies (below 0.8 MeV). Those data are larger by a factor of about 1.4 with respect to the previous data reported in the NACRE compilation in the energy region 0.6-0.8 MeV. In order to solve these discrepancies, here we present a new direct experiment performed using a silicon strip detector array (LHASA - Large High-resolution Array of Silicon for Astrophysics). Our results clearly confirm the trend of the latest experimental data in the energy region of interest, pointing towards a larger S-factor value than the one reported in the NACRE compilation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal A

ISSN

1434-6001

e-ISSN

1434-601X

Svazek periodika

59

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

65

Kód UT WoS článku

000961864300002

EID výsledku v databázi Scopus

2-s2.0-85152542961