Improvement of the high-accuracy O-17(p, alpha)N-14 reaction-rate measurement via the Trojan Horse method for application to O-17 nucleosynthesis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F15%3A00445860" target="_blank" >RIV/61389005:_____/15:00445860 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevC.91.065803" target="_blank" >http://dx.doi.org/10.1103/PhysRevC.91.065803</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.91.065803" target="_blank" >10.1103/PhysRevC.91.065803</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Improvement of the high-accuracy O-17(p, alpha)N-14 reaction-rate measurement via the Trojan Horse method for application to O-17 nucleosynthesis

Popis výsledku v původním jazyce

The O-17(p,a)N-14 and O-17(p,gamma) F-18 reactions are of paramount importance for the nucleosynthesis in a number of stellar sites, including red giants, asymptotic giant branch stars, massive stars, and classical novae. At temperatures typical of the above-mentioned astrophysical scenario, T = 0.01-0.1 GK for RG, AGB, and massive stars and T = 0.1-0.4 GK for a classical nova explosion, the O-17(p, alpha) (14)Nreaction cross section is dominated by two resonances: one at about E-R(cm) = 65 keV above the F-18 proton threshold energy, corresponding to the EX = 5.673 MeV level in F-18, and another one at E-R(cm) = 183 keV (EX = 5.786 MeV). We report on the indirect study of the O-17(p, alpha) N-14 reaction via the Trojan Horse method by applying the approach recently developed for extracting the strength of narrow resonance at ultralow energies. The mean value of the strengths obtained in the two measurements was calculated and compared with the direct data available in literature. This

Název v anglickém jazyce

Improvement of the high-accuracy O-17(p, alpha)N-14 reaction-rate measurement via the Trojan Horse method for application to O-17 nucleosynthesis

Popis výsledku anglicky

The O-17(p,a)N-14 and O-17(p,gamma) F-18 reactions are of paramount importance for the nucleosynthesis in a number of stellar sites, including red giants, asymptotic giant branch stars, massive stars, and classical novae. At temperatures typical of the above-mentioned astrophysical scenario, T = 0.01-0.1 GK for RG, AGB, and massive stars and T = 0.1-0.4 GK for a classical nova explosion, the O-17(p, alpha) (14)Nreaction cross section is dominated by two resonances: one at about E-R(cm) = 65 keV above the F-18 proton threshold energy, corresponding to the EX = 5.673 MeV level in F-18, and another one at E-R(cm) = 183 keV (EX = 5.786 MeV). We report on the indirect study of the O-17(p, alpha) N-14 reaction via the Trojan Horse method by applying the approach recently developed for extracting the strength of narrow resonance at ultralow energies. The mean value of the strengths obtained in the two measurements was calculated and compared with the direct data available in literature. This

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

<a href="/cs/project/LC07050" target="_blank" >LC07050: Centrum experimentální jaderné astrofyziky a jaderné fyziky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Physical Review. C

ISSN

0556-2813

e-ISSN

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Svazek periodika

91

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

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Kód UT WoS článku

000357092800003

EID výsledku v databázi Scopus

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