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Title: Ab initio predictions for polarized deuterium-tritium thermonuclear fusion

Journal Article · · Nature Communications
 [1]; ORCiD logo [2];  [3]
  1. Univ. Paris-Saclay, Gif-sur-Yvette (France). Inst. de Physique Nucléaire; Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. TRIUMF, Vancouver, BC (Canada)

The fusion of deuterium (D) with tritium (T) is the most promising of the reactions that could power thermonuclear reactors of the future. It may lead to even more efficient energy generation if obtained in a polarized state, that is with the spin of the reactants aligned. Here in this paper, we report first-principles predictions of the polarized DT fusion using nuclear forces from effective field theory. By employing the ab initio no-core shell model with continuum reaction method to solve the quantum mechanical five-nucleon problem, we accurately determine the enhanced fusion rate and angular distribution of the emitted neutron and 4He. Our calculations demonstrate in detail the small contribution of anisotropies, placing on a firmer footing the understanding of the rate of DT fusion in a polarized plasma. In the future, analogous calculations could be used to obtain accurate values for other, more uncertain thermonuclear reaction data critical to nuclear science applications.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); Natural Sciences and Engineering Research Council of Canada (NSERC); Canadian National Research Council of Canada
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1497262
Report Number(s):
LLNL-JRNL--745269; 900359
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 10; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Description of Four- and Five-Nucleon Systems by Solving Faddeev-Yakubovsky Equations in Configuration Space journal February 2020
The Faddeev-Yakubovsky symphony text January 2019
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