New precision measurement of the3He(4He, γ)7Be cross section

B. S.Nara Singh; M. Hass; Y. Nir-El; G. Haquin

doi:10.1103/PhysRevLett.93.262503

New precision measurement of the³He(⁴He, γ)⁷Be cross section

B. S.Nara Singh, M. Hass, Y. Nir-El, G. Haquin

Research output: Contribution to journal › Article › peer-review

147 Scopus citations

Abstract

The precision measurement of the cross section of the ³He( ⁴He, γ) ⁷Be reaction, which was determined by the ensuing ⁷Be activity, was described. A ⁷Be activity precision measurement of the cross section was initiated at energies around 420-950 keV using a ³He beam and a ⁴He gas target with a Ni-foil window. To examine the issue of the absolute scale of various measurements, a χ² compatibility analysis was carried out between the values of astrophysical S(E) factor. The results show that S ₃₄(0) provided accurate and reliable input for the standard big bang nucleosynthesis (SBBN) simulations.

Original language	English
Article number	262503
Journal	Physical Review Letters
Volume	93
Issue number	26 I
DOIs	https://doi.org/10.1103/PhysRevLett.93.262503
State	Published - 31 Dec 2004
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.93.262503

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title = "New precision measurement of the3He(4He, γ)7Be cross section",

abstract = "The precision measurement of the cross section of the 3He( 4He, γ) 7Be reaction, which was determined by the ensuing 7Be activity, was described. A 7Be activity precision measurement of the cross section was initiated at energies around 420-950 keV using a 3He beam and a 4He gas target with a Ni-foil window. To examine the issue of the absolute scale of various measurements, a χ2 compatibility analysis was carried out between the values of astrophysical S(E) factor. The results show that S 34(0) provided accurate and reliable input for the standard big bang nucleosynthesis (SBBN) simulations.",

author = "Singh, {B. S.Nara} and M. Hass and Y. Nir-El and G. Haquin",

note = "Funding Information: We thank Y. Shachar and the technical staff of the accelerator laboratory at the Weizmann Institute for their help and support. We acknowledge C. Bordeanu for her work on the initial design of the setup and I. Regev for his help in the data analysis. We thank K. Nollett and A. Cs{\'o}t{\'o} for a fruitful correspondence. This work was partly supported by the Israel-Germany MINERVA foundation and by the Israel Science foundation.",

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doi = "10.1103/PhysRevLett.93.262503",

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AU - Haquin, G.

N1 - Funding Information: We thank Y. Shachar and the technical staff of the accelerator laboratory at the Weizmann Institute for their help and support. We acknowledge C. Bordeanu for her work on the initial design of the setup and I. Regev for his help in the data analysis. We thank K. Nollett and A. Csótó for a fruitful correspondence. This work was partly supported by the Israel-Germany MINERVA foundation and by the Israel Science foundation.

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New precision measurement of the³He(⁴He, γ)⁷Be cross section

Abstract

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