Cosmological lithium problem solution in accelerator experiment.
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| Title: | Cosmological lithium problem solution in accelerator experiment. |
|---|---|
| Authors: | Dudkin, G. N.1 (AUTHOR) dudkin@tpu.ru |
| Source: | Russian Physics Journal. Nov2024, Vol. 67 Issue 11, p1838-1848. 11p. |
| Subjects: | Particles (Nuclear physics), Ion accelerators, Nuclear physics, Physical sciences, Nucleosynthesis |
| Abstract: | The cosmological lithium problem is a serious problem for understanding the early Universe, which casts doubt on the Big Bang nucleosynthesis (BBN) model. The problem is that the data on the abundance of 6Li and 7Li elements obtained from astronomic observations and in the BBN model are too different, based on the data on all nuclear reactions in which these elements produce (or destroy). Astronomy continues to improve the optical instrumentation in order to achieve better resolution and efficiency. In nuclear physics, cross sections of all reactions resulting in the lithium nucleus production (or destruction) are being clarified. This work presents a brief review of related theoretical calculations and experimental data. Experimental results are presented in the laboratory coordinate system for 3H(3He, γ)6Li reaction at an energy of 38 keV, first obtained using the Hall ion accelerator in National Research Tomsk Polytechnic University, Tomsk, Russia. S-factor calculated for 3H(3He, γ)6Li S = 0.15 ± 0.03 keV·b reaction is inconsistent either with approximation of the experimental data obtained at high energies, or theoretical calculations. It is also inconsistent with assumptions about a new physics hidden in this reaction. Our work discusses the possibility of solving the cosmological lithium problem via reactions with light neutron clusters. [ABSTRACT FROM AUTHOR] |
| Copyright of Russian Physics Journal is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 183537371 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Cosmological lithium problem solution in accelerator experiment. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Dudkin%2C+G%2E+N%2E%22">Dudkin, G. N.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> dudkin@tpu.ru</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Russian+Physics+Journal%22">Russian Physics Journal</searchLink>. Nov2024, Vol. 67 Issue 11, p1838-1848. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Particles+%28Nuclear+physics%29%22">Particles (Nuclear physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Ion+accelerators%22">Ion accelerators</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+physics%22">Nuclear physics</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+sciences%22">Physical sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Nucleosynthesis%22">Nucleosynthesis</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The cosmological lithium problem is a serious problem for understanding the early Universe, which casts doubt on the Big Bang nucleosynthesis (BBN) model. The problem is that the data on the abundance of 6Li and 7Li elements obtained from astronomic observations and in the BBN model are too different, based on the data on all nuclear reactions in which these elements produce (or destroy). Astronomy continues to improve the optical instrumentation in order to achieve better resolution and efficiency. In nuclear physics, cross sections of all reactions resulting in the lithium nucleus production (or destruction) are being clarified. This work presents a brief review of related theoretical calculations and experimental data. Experimental results are presented in the laboratory coordinate system for 3H(3He, γ)6Li reaction at an energy of 38 keV, first obtained using the Hall ion accelerator in National Research Tomsk Polytechnic University, Tomsk, Russia. S-factor calculated for 3H(3He, γ)6Li S = 0.15 ± 0.03 keV·b reaction is inconsistent either with approximation of the experimental data obtained at high energies, or theoretical calculations. It is also inconsistent with assumptions about a new physics hidden in this reaction. Our work discusses the possibility of solving the cosmological lithium problem via reactions with light neutron clusters. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Russian Physics Journal is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11182-024-03320-z Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 1838 Subjects: – SubjectFull: Particles (Nuclear physics) Type: general – SubjectFull: Ion accelerators Type: general – SubjectFull: Nuclear physics Type: general – SubjectFull: Physical sciences Type: general – SubjectFull: Nucleosynthesis Type: general Titles: – TitleFull: Cosmological lithium problem solution in accelerator experiment. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Dudkin, G. N. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 10648887 Numbering: – Type: volume Value: 67 – Type: issue Value: 11 Titles: – TitleFull: Russian Physics Journal Type: main |
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