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Title: Trojan Horse cross section measurements and their impact on primordial nucleosynthesis

Abstract

Big Bang Nucleosynthesis (BBN) nucleosynthesis requires several nuclear physics inputs and, among them, an important role is played by nuclear reaction rates. They are among the most important input for a quantitative description of the early Universe. An up-to-date compilation of direct cross sections of d(d,p)t, d(d,n) 3He and 3He(d,p) 4He reactions is given, being these ones among the most uncertain bare-nucleus cross sections. An intense experimental effort has been carried on in the last decade to apply the Trojan Horse Method (THM) to study reactions of relevance for the BBN and measure their astrophysical S(E)-factor. The result of these recent measurements is reviewed and compared with the available direct data. The reaction rates and the relative error for the four reactions of interest are then numerically calculated in the temperature ranges of relevance for BBN (0.019 <10) and compared with up-to-date reaction rate compilations. Their value were therefore used as input physics for primordial nucleosynthesis calculations in order to evaluate their impact on the calculated primordial abundances of D, 3,4He and 7Li. These ones were then compared with the observational primordial abundance estimates in different astrophysical sites. A comparison was also performed with calculations using other reaction rates compilationsmore » available in literature.« less

Authors:
 [1];  [2];  [3];  [2];  [1];  [4];  [5];  [6]
  1. Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS)
  2. Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS); Univ. degli Studi di Catania (Italy)
  3. Texas A & M Univ., Commerce, TX (United States)
  4. Univ. degli Studi di Catania (Italy)
  5. Texas A & M Univ., College Station, TX (United States)
  6. Istituto Nazionale di Fisica Nucleare (INFN), Catania (Italy). Lab. Nazionali del Sud (INFN-LNS); Univ. degli Studi di Enna (Italy)
Publication Date:
Research Org.:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1505778
Grant/Contract Number:  
NA0003841
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Physics. Conference Series
Additional Journal Information:
Journal Volume: 940; Conference: 7th Nuclear Physics in Astrophysics and 28th International Nuclear Physics Divisional Conference of the European Physical Society (NPA7), York, UK, 18-22 May 2015; Journal ID: ISSN 1742-6588
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Pizzone, R. G., Spartá, R., Bertulani, C., Spitaleri, C., Cognata, M. La, Lamia, L., Mukhamedzhanov, A., and Tumino, A. Trojan Horse cross section measurements and their impact on primordial nucleosynthesis. United States: N. p., 2018. Web. doi:10.1088/1742-6596/940/1/012017.
Pizzone, R. G., Spartá, R., Bertulani, C., Spitaleri, C., Cognata, M. La, Lamia, L., Mukhamedzhanov, A., & Tumino, A. Trojan Horse cross section measurements and their impact on primordial nucleosynthesis. United States. doi:10.1088/1742-6596/940/1/012017.
Pizzone, R. G., Spartá, R., Bertulani, C., Spitaleri, C., Cognata, M. La, Lamia, L., Mukhamedzhanov, A., and Tumino, A. Mon . "Trojan Horse cross section measurements and their impact on primordial nucleosynthesis". United States. doi:10.1088/1742-6596/940/1/012017. https://www.osti.gov/servlets/purl/1505778.
@article{osti_1505778,
title = {Trojan Horse cross section measurements and their impact on primordial nucleosynthesis},
author = {Pizzone, R. G. and Spartá, R. and Bertulani, C. and Spitaleri, C. and Cognata, M. La and Lamia, L. and Mukhamedzhanov, A. and Tumino, A.},
abstractNote = {Big Bang Nucleosynthesis (BBN) nucleosynthesis requires several nuclear physics inputs and, among them, an important role is played by nuclear reaction rates. They are among the most important input for a quantitative description of the early Universe. An up-to-date compilation of direct cross sections of d(d,p)t, d(d,n)3He and 3He(d,p)4He reactions is given, being these ones among the most uncertain bare-nucleus cross sections. An intense experimental effort has been carried on in the last decade to apply the Trojan Horse Method (THM) to study reactions of relevance for the BBN and measure their astrophysical S(E)-factor. The result of these recent measurements is reviewed and compared with the available direct data. The reaction rates and the relative error for the four reactions of interest are then numerically calculated in the temperature ranges of relevance for BBN (0.019 <10) and compared with up-to-date reaction rate compilations. Their value were therefore used as input physics for primordial nucleosynthesis calculations in order to evaluate their impact on the calculated primordial abundances of D, 3,4He and 7Li. These ones were then compared with the observational primordial abundance estimates in different astrophysical sites. A comparison was also performed with calculations using other reaction rates compilations available in literature.},
doi = {10.1088/1742-6596/940/1/012017},
journal = {Journal of Physics. Conference Series},
issn = {1742-6588},
number = ,
volume = 940,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
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Publisher's Version of Record

Figures / Tables:

Table 1 Table 1: Table with reaction rate parameters (appearing in Eq. 1) for 2H(d,p)3H and 2H(d,n)3He evaluated from the present work and S-factors from direct measurements.

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Figures / Tables found in this record:

    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.