prikaz prve stranice dokumenta First Measurement of the 19F(α, p)22Ne Reaction at Energies of Astrophysical Relevance
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Scientific paper - Original scientific paper
First Measurement of the 19F(α, p)22Ne Reaction at Energies of Astrophysical Relevance
Astrophysical Journal, 836 (2017), 1; 57. https://doi.org/10.3847/1538-4357/836/1/57
Pizzone, R.G.; D'Agata, G.; La Cognata, M.; Indelicato, I.; Spitaleri, C.; Blagus, S.; Cherubini, S.; Figuera, P.; Grassi, L.; Guardo, G.L.; Gulino, M.; Hayakawa, S.; Kshetri, R.; Lamia, L.; Lattuada, M.; Mijatović, Tea; Milin, Matko; Miljanić, Đuro; Prepolec, Lovro; Rapisarda, G.G.; Romano, S.; Sergi, M.L.; Skukan, Natko; Soić, Neven; Tokić, Vedrana; Tumino, A.; Uroić, Milivoj More authors...

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Pizzone, R., D'Agata, G., La Cognata, M., Indelicato, I., Spitaleri, C., Blagus, S. ... Uroić, M. (2017). First Measurement of the 19F(α, p)22Ne Reaction at Energies of Astrophysical Relevance. Astrophysical Journal, 836. (1). doi: 10.3847/1538-4357/836/1/57

Pizzone, R.G., et al. "First Measurement of the 19F(α, p)22Ne Reaction at Energies of Astrophysical Relevance." Astrophysical Journal, vol. 836, no. 1, 2017. https://doi.org/10.3847/1538-4357/836/1/57

Pizzone, R.G., G. D'Agata, M. La Cognata, I. Indelicato, C. Spitaleri, S. Blagus, S. Cherubini, et al. "First Measurement of the 19F(α, p)22Ne Reaction at Energies of Astrophysical Relevance." Astrophysical Journal 836, no. 1 (2017). https://doi.org/10.3847/1538-4357/836/1/57

Pizzone, R., et al. (2017) 'First Measurement of the 19F(α, p)22Ne Reaction at Energies of Astrophysical Relevance', Astrophysical Journal, 836(1). doi: 10.3847/1538-4357/836/1/57

Pizzone R, D'Agata G, La Cognata M, Indelicato I, Spitaleri C, Blagus S, and sur.. First Measurement of the 19F(α, p)22Ne Reaction at Energies of Astrophysical Relevance. Astrophysical Journal [Internet]. 2017 [cited 2024 October 24];836(1). doi: 10.3847/1538-4357/836/1/57

R. Pizzone, et al., "First Measurement of the 19F(α, p)22Ne Reaction at Energies of Astrophysical Relevance", Astrophysical Journal, vol. 836, no. 1, 2017. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:603063. [Accessed: 24 October 2024]

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Metadata
Title (english)First Measurement of the 19F(α, p)22Ne Reaction at Energies of Astrophysical Relevance
AuthorR.G. Pizzone
AuthorG. D'Agata
AuthorM. La Cognata
AuthorI. Indelicato
AuthorC. Spitaleri
AuthorS. Blagus
AuthorS. Cherubini
AuthorP. Figuera
AuthorL. Grassi
AuthorG.L. Guardo
AuthorM. Gulino
AuthorS. Hayakawa
AuthorR. Kshetri
AuthorL. Lamia
AuthorM. Lattuada
AuthorTea Mijatović
MBZ: 330335
AuthorMatko Milin
MBZ: 233723
AuthorĐuro Miljanić
MBZ: 31583
AuthorLovro Prepolec
MBZ: 326842
AuthorG.G. Rapisarda
AuthorS. Romano
AuthorM.L. Sergi
AuthorNatko Skukan
AuthorNeven Soić
MBZ: 184260
AuthorVedrana Tokić
MBZ: 340145
AuthorA. Tumino
AuthorMilivoj Uroić
MBZ: 221764
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The observational 19F abundance in stellar environments systematically exceeds the predicted one, thus representing one of the unsolved challenges for stellar modeling. It is therefore clear that further investigation is needed in this field. In this work, we focus our attention on the measurement of the 19F(α, p) 22Ne reaction in the astrophysical energy range, between 0.2 and 0.8 MeV (far below the Coulomb barrier, 3.8 MeV), as it represents the main destruction channel in He-rich environments. The lowest energy at which this reaction has been studied with direct measurements is ∼0.66 MeV, covering only the upper tail of the Gamow window, causing the reaction-rate evaluation to be based on extrapolation. To investigate lower energies, the 19F(α, p) 22Ne reaction has been studied by means of the Trojan horse method, applied to the quasi-free 6Li (19F, p22Ne)2H reaction at Ebeam = 6 MeV. The indirect cross section of the 19F(α, p) 22Ne reaction at energies ≲1 MeV was extracted, fully covering the astrophysical region of interest and overlapping existing direct data for normalization. Several resonances have been detected for the first time inside the Gamow window. The reaction rate has been calculated, showing an increase up to a factor of 4 with respect to the literature at astrophysical temperatures. This might lead to potential major astrophysical implications.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleAstrophysical Journal
Numberingvol. 836, no. 1, 57
p-ISSN0004-637X
e-ISSN1538-4357
DOIhttps://doi.org/10.3847/1538-4357/836/1/57
URN:NBNurn:nbn:hr:217:603063
Publication2017
ProjectNumber: IP-2013-11-7194
Title (croatian): Nuklearna struktura i reakcije: eksperimentima prema neutronskoj liniji kapanja
Acronym: SR-ETNo
Leader: Suzana Szilner
Jurisdiction: Croatia
Funding stream: IP
Document URLhttps://iopscience.iop.org/article/10.3847/1538-4357/836/1/57
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public note© 2017. The American Astronomical Society. All rights reserved. Received 2016 December 21; revised 2017 January 10; accepted 2017 January 10; published 2017 February 8.
Created on2020-02-28 18:52:25