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Cross-section Measurement of the Cosmologically Relevant 7Be(n, α)4 He Reaction over a Broad Energy Range in a Single Experiment

Journal Article · · The Astrophysical Journal (Online)
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  1. Univ. degli Studi di Catania (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS); DOE/OSTI
  2. Univ. degli Studi di Padova (Italy); Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Padova (Italy)
  3. Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS)
  4. Univ. of Tokyo (Japan). Center for Nuclear Study
  5. Univ. degli Studi di Catania (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS)
  6. Texas A & M Univ., Commerce, TX (United States). Dept. of Physics and Astronomy
  7. Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Napoli (Italy)
  8. Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Milano (Italy)
  9. Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Padova (Italy)
  10. Univ. degli Studi di Catania (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS); Nuclear Physics Inst. of the Czech Academy of Science, Rez (Czech Republic)
  11. NOVA Univ. Lisbon (UNL) (Portugal). Lab. for Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL)
  12. National Inst. of Nuclear Physics (INFN), Legnaro (Italy). National Lab. of Legnaro (INFN-LNL)
  13. Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS); Università degli Studi di Enna Kore (Italy)
  14. Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Napoli (Italy); Univ. degli Studi di Napoli Federico II (Italy)
  15. Nuclear Physics Inst. of the Czech Academy of Science, Rez (Czech Republic)
  16. Univ. of Ioannina (Greece)
  17. Univ. of Huelva (Spain)
  18. Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS); Univ. of Ioannina (Greece)
  19. Beihang Univ., Beijing (China)
+ Show Author Affiliations

Studying interactions of radioactive ions with neutrons is particularly demanding and has been performed only in a few cases. Some of these interactions are crucial in several astrophysical contexts. In the present work, the case of the 7Be destruction induced by the (n, α) reaction is investigated at the energies typical of the primordial nucleosynthesis by means of the Trojan Horse Method applied to the 2H(7Be, αα)p quasi-free reaction. The 7Be(n, α)4He cross-section has been measured in a single experiment from ~2 MeV down to cosmological energies. The corresponding deduced reaction rate has been adopted to evaluate the impact on big bang nucleosynthesis and on the lithium problem.

Research Organization:
Texas A & M Univ., Commerce, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF)
Grant/Contract Number:
FG02-08ER41533
OSTI ID:
1609971
Journal Information:
The Astrophysical Journal (Online), Journal Name: The Astrophysical Journal (Online) Journal Issue: 1 Vol. 879; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (1)

Astrophysics studies with the Trojan Horse Method journal September 2019

Figures / Tables (13)

Figure 1(p. 3)figure Figure 1
Figure 2(p. 3)figure Figure 2
Figure 3(p. 4)figure Figure 3
Figure 4(p. 4)figure Figure 4
Figure 5(p. 5)figure Figure 5
Figure 6(p. 5)figure Figure 6
Figure 7(p. 5)figure Figure 7
Figure 8(p. 5)figure Figure 8
Figure 10(p. 6)figure Figure 10
Figure 9(p. 6)figure Figure 9
Table 1(p. 6)table Table 1
Figure 11(p. 7)figure Figure 11
Table 2(p. 7)table Table 2

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
abundances – primordial nucleosynthesis
nuclear reactions
nucleosynthesis