New reaction rates for the destruction of Be-7 during big bang nucleosynthesis measured at CERN/n_TOF and their implications on the cosmological lithium problem

Alberto Mengoni; L Damone; M Barbagallo; O Aberle; V Alcayne; S. Amaducci; J. Andrzejewski; L Audouin; V Babiano-Suarez; M Bacak; S. Bennett; Anton Wallner

doi:10.1051/epjconf/202023907001

New reaction rates for the destruction of Be-7 during big bang nucleosynthesis measured at CERN/n_TOF and their implications on the cosmological lithium problem

Alberto Mengoni, L Damone, M Barbagallo, O Aberle, V Alcayne, S. Amaducci, J. Andrzejewski, L Audouin, V Babiano-Suarez, M Bacak, S. Bennett, Anton Wallner

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › peer-review

Abstract

New measurements of the Be-7(n,alpha)He-4 and Be-7(n,p)Li-7 reaction cross sections from thermal to keV neutron energies have been recently performed at CERN/n_TOF. Based on the new experimental results, astrophysical reaction rates have been derived for both reactions, including a proper evaluation of their uncertainties in the thermal energy range of interest for big bang nucleosynthesis studies. The new estimate of the Be-7 destruction rate, based on these new results, yields a decrease of the predicted cosmological Li-7 abundance insufficient to provide a viable solution to the cosmological lithium problem.

Original language	English
Title of host publication	Accurate measurement of the standard 235U(n,f) cross section from thermal to 170 keV neutron energy
Place of Publication	China
Publisher	EPJ Web of Conferences
ISBN (Print)	978-2-7598-9106-1
DOIs	https://doi.org/10.1051/epjconf/202023907001
Publication status	Published - 2020
Event	2019: International Conference on Nuclear Data for Science and Technology - Beijing, China, China Duration: 1 Jan 2019 → …

Conference

Conference	2019: International Conference on Nuclear Data for Science and Technology
Country/Territory	China
Period	1/01/19 → …
Other	May 19-24

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10.1051/epjconf/202023907001

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Mengoni, A., Damone, L., Barbagallo, M., Aberle, O., Alcayne, V., Amaducci, S., Andrzejewski, J., Audouin, L., Babiano-Suarez, V., Bacak, M., Bennett, S., & Wallner, A. (2020). New reaction rates for the destruction of Be-7 during big bang nucleosynthesis measured at CERN/n_TOF and their implications on the cosmological lithium problem. In Accurate measurement of the standard 235U(n,f) cross section from thermal to 170 keV neutron energy EPJ Web of Conferences . https://doi.org/10.1051/epjconf/202023907001

@inproceedings{502435c2962c4de9b6948f6950fd099f,

title = "New reaction rates for the destruction of Be-7 during big bang nucleosynthesis measured at CERN/n_TOF and their implications on the cosmological lithium problem",

abstract = "New measurements of the Be-7(n,alpha)He-4 and Be-7(n,p)Li-7 reaction cross sections from thermal to keV neutron energies have been recently performed at CERN/n_TOF. Based on the new experimental results, astrophysical reaction rates have been derived for both reactions, including a proper evaluation of their uncertainties in the thermal energy range of interest for big bang nucleosynthesis studies. The new estimate of the Be-7 destruction rate, based on these new results, yields a decrease of the predicted cosmological Li-7 abundance insufficient to provide a viable solution to the cosmological lithium problem.",

author = "Alberto Mengoni and L Damone and M Barbagallo and O Aberle and V Alcayne and S. Amaducci and J. Andrzejewski and L Audouin and V Babiano-Suarez and M Bacak and S. Bennett and Anton Wallner",

year = "2020",

doi = "10.1051/epjconf/202023907001",

language = "English",

isbn = "978-2-7598-9106-1",

booktitle = "Accurate measurement of the standard 235U(n,f) cross section from thermal to 170 keV neutron energy",

publisher = "EPJ Web of Conferences ",

note = "2019: International Conference on Nuclear Data for Science and Technology ; Conference date: 01-01-2019",

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Mengoni, A, Damone, L, Barbagallo, M, Aberle, O, Alcayne, V, Amaducci, S, Andrzejewski, J, Audouin, L, Babiano-Suarez, V, Bacak, M, Bennett, S & Wallner, A 2020, New reaction rates for the destruction of Be-7 during big bang nucleosynthesis measured at CERN/n_TOF and their implications on the cosmological lithium problem. in Accurate measurement of the standard 235U(n,f) cross section from thermal to 170 keV neutron energy. EPJ Web of Conferences , China, 2019: International Conference on Nuclear Data for Science and Technology, China, 1/01/19. https://doi.org/10.1051/epjconf/202023907001

New reaction rates for the destruction of Be-7 during big bang nucleosynthesis measured at CERN/n_TOF and their implications on the cosmological lithium problem. / Mengoni, Alberto; Damone, L; Barbagallo, M et al.
Accurate measurement of the standard 235U(n,f) cross section from thermal to 170 keV neutron energy. China: EPJ Web of Conferences , 2020.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › peer-review

TY - GEN

T1 - New reaction rates for the destruction of Be-7 during big bang nucleosynthesis measured at CERN/n_TOF and their implications on the cosmological lithium problem

AU - Mengoni, Alberto

AU - Damone, L

AU - Barbagallo, M

AU - Aberle, O

AU - Alcayne, V

AU - Amaducci, S.

AU - Andrzejewski, J.

AU - Audouin, L

AU - Babiano-Suarez, V

AU - Bacak, M

AU - Bennett, S.

AU - Wallner, Anton

PY - 2020

Y1 - 2020

N2 - New measurements of the Be-7(n,alpha)He-4 and Be-7(n,p)Li-7 reaction cross sections from thermal to keV neutron energies have been recently performed at CERN/n_TOF. Based on the new experimental results, astrophysical reaction rates have been derived for both reactions, including a proper evaluation of their uncertainties in the thermal energy range of interest for big bang nucleosynthesis studies. The new estimate of the Be-7 destruction rate, based on these new results, yields a decrease of the predicted cosmological Li-7 abundance insufficient to provide a viable solution to the cosmological lithium problem.

AB - New measurements of the Be-7(n,alpha)He-4 and Be-7(n,p)Li-7 reaction cross sections from thermal to keV neutron energies have been recently performed at CERN/n_TOF. Based on the new experimental results, astrophysical reaction rates have been derived for both reactions, including a proper evaluation of their uncertainties in the thermal energy range of interest for big bang nucleosynthesis studies. The new estimate of the Be-7 destruction rate, based on these new results, yields a decrease of the predicted cosmological Li-7 abundance insufficient to provide a viable solution to the cosmological lithium problem.

U2 - 10.1051/epjconf/202023907001

DO - 10.1051/epjconf/202023907001

M3 - Conference Paper

SN - 978-2-7598-9106-1

BT - Accurate measurement of the standard 235U(n,f) cross section from thermal to 170 keV neutron energy

PB - EPJ Web of Conferences

CY - China

T2 - 2019: International Conference on Nuclear Data for Science and Technology

Y2 - 1 January 2019

ER -

Mengoni A, Damone L, Barbagallo M, Aberle O, Alcayne V, Amaducci S et al. New reaction rates for the destruction of Be-7 during big bang nucleosynthesis measured at CERN/n_TOF and their implications on the cosmological lithium problem. In Accurate measurement of the standard 235U(n,f) cross section from thermal to 170 keV neutron energy. China: EPJ Web of Conferences . 2020 doi: 10.1051/epjconf/202023907001

New reaction rates for the destruction of Be-7 during big bang nucleosynthesis measured at CERN/n_TOF and their implications on the cosmological lithium problem

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