prikaz prve stranice dokumenta 7Be(n, p)7Li Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN
  Download
PDF 314.91 KB
Scientific paper - Original scientific paper
7Be(n, p)7Li Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN
Physical Review Letters, 121 (2018), 4; 042701. https://doi.org/10.1103/PhysRevLett.121.042701
(n_TOF Collaboration) Damone, L.; ...; Bosnar, Damir; ...; Žugec, Petar

Institutional repository: Repository of the Faculty of Science

Cite this document

Damone, L., Bosnar, D. & Žugec, P. (2018). 7Be(n, p)7Li Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN. Physical Review Letters, 121. (4). doi: 10.1103/PhysRevLett.121.042701

Damone, L., et al. "7Be(n, p)7Li Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN." Physical Review Letters, vol. 121, no. 4, 2018. https://doi.org/10.1103/PhysRevLett.121.042701

Damone, L., Damir Bosnar and Petar Žugec. "7Be(n, p)7Li Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN." Physical Review Letters 121, no. 4 (2018). https://doi.org/10.1103/PhysRevLett.121.042701

Damone, L., Bosnar, D. and Žugec, P. (2018) '7Be(n, p)7Li Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN', Physical Review Letters, 121(4). doi: 10.1103/PhysRevLett.121.042701

Damone L, Bosnar D, Žugec P. 7Be(n, p)7Li Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN. Physical Review Letters [Internet]. 2018 [cited 2024 December 23];121(4). doi: 10.1103/PhysRevLett.121.042701

L. Damone, D. Bosnar and P. Žugec, "7Be(n, p)7Li Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN", Physical Review Letters, vol. 121, no. 4, 2018. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:439649. [Accessed: 23 December 2024]

Metadata
Title (english)7Be(n, p)7Li Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN
AuthorL. Damone
Author
...
AuthorDamir Bosnar
MBZ: 134936
Author
...
AuthorPetar Žugec
MBZ: 326085
Collaborationn_TOF Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
We report on the measurement of the 7Be(n, p)7Li cross section from thermal to approximately 325 keV neutron energy, performed in the high-flux experimental area (EAR2) of the n_TOF facility at CERN. This reaction plays a key role in the lithium yield of the big bang nucleosynthesis (BBN) for standard cosmology. The only two previous time-of-flight measurements performed on this reaction did not cover the energy window of interest for BBN, and they showed a large discrepancy between each other. The measurement was performed with a Si telescope and a high-purity sample produced by implantation of a 7Be ion beam at the ISOLDE facility at CERN. While a significantly higher cross section is found at low energy, relative to current evaluations, in the region of BBN interest, the present results are consistent with the values inferred from the time-reversal 7Li(p, n)7Be reaction, thus yielding only a relatively minor improvement on the so-called cosmological lithium problem. The relevance of these results on the near-threshold neutron production in the p+7Li reaction is also discussed.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review Letters
Numberingvol. 121, no. 4, 042701
p-ISSN0031-9007
e-ISSN1079-7114
DOIhttps://doi.org/10.1103/PhysRevLett.121.042701
URN:NBNurn:nbn:hr:217:439649
Publication2018
Document URLhttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.042701
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public note© 2018 American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 16 March 2018; revised manuscript received 9 May 2018; published 24 July 2018.
Created on2020-02-29 22:06:13