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On the Determination of the 7 Be(n, α ) 4 He Reaction Cross Section at BBN Energies

Journal Article · · The Astrophysical Journal (Online)
 [1];  [2];  [3];  [4];  [5];  [5];  [2];  [5];  [6]
  1. Univ. of Catania, Catania (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS); none
  2. Univ. of Catania, Catania (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS)
  3. Texas A & M Univ.-Commerce, Commerce, TX (United States)
  4. Texas A & M Univ.-Commerce, Commerce, TX (United States); Chinese Academy of Sciences (CAS), Lanzhou (China)
  5. Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS)
  6. Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS); Kore Univ. of Enna, Enna (Italy)
+ Show Author Affiliations

7Be destruction channels are presently a matter of study due to their influence on the 7Li cosmological abundances. In this work, we determine the cross section of the (n, α) reaction by using Trojan Horse experimental data for the 7Li(p, α)4He reaction and correcting for Coulomb effects. The deduced 7Be(n, α)4He data overlap with the Big Bang nucleosynthesis energies and the deduced reaction rate allows us to evaluate the corresponding cosmological implications.

Research Organization:
Texas A & M Univ.-Commerce, Commerce, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Grant/Contract Number:
FG02-08ER41533
OSTI ID:
1511024
Journal Information:
The Astrophysical Journal (Online), Journal Name: The Astrophysical Journal (Online) Journal Issue: 2 Vol. 850; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

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Resonant destruction as a possible solution to the cosmological lithium problem journal March 2011
Be 7 ( n , α ) He 4 Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN journal October 2016
Time-Reversal Measurement of the p -Wave Cross Sections of the Be 7 ( n , α ) He 4 Reaction for the Cosmological Li Problem journal February 2017
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Cited By (6)

Direct and Indirect Measurements for a Better Understanding of the Primordial Nucleosynthesis journal October 2020
Big-Bang Nucleosynthesis after Planck journal March 2020
Astrophysics studies with the Trojan Horse Method journal September 2019
Nuclear physics and its role for describing the early universe journal January 2019
Impact of the 7Be(α, γ)11C Reaction on the Primordial Abundance of 7Li journal July 2018
Big-Bang Nucleosynthesis After Planck text January 2019

Figures / Tables (6)

Figure 1(p. 3)figure Figure 1
Figure 2(p. 3)figure Figure 2
Figure 3(p. 4)figure Figure 3
Table 1(p. 4)table Table 1
Table 2(p. 4)table Table 2
Table 3(p. 4)table Table 3

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
abundances
nuclear reactions
nucleosynthesis
primordial nucleosynthesis