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Fast Beam Driven Neutron Yield in Thermonuclear Neutron Source Plasmas

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Abstract

The thermonuclear fusion between fast (super-thermal) particles injected in plasma as a neutral beam and the ions of the background plasma is expected to be the main source of fusion neutrons in FNS (fusion neutron source) design based on tokamak. Neutral beam contribution in fusion reactivity and in the total neutron yield depends on the high-energy ion fraction in the integral energy distribution. NESTOR code [1] calculates nuclear fusion rates in the FNS plasma volume, taking into account an external source of high-energy fast ions. Neutral beam model reproduces in detail the actual beam structure in phase space at the injection port plane; while the fast ion distributions in magnetically confined plasma are calculated using a combination of slowing-down classical formulae and magnetic field topology in the tokamak chamber. Here we discuss the issues relevant to the overall neutron production and the contribution of fast ions to the neutron output in plasma.

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ACKNOWLEDGMENTS

The authors are grateful to the reviewers for their benevolence and insightful remarks. The work was partially supported by the National Research Centre “Kurchatov Institute.”

Funding

This work was supported by ongoing institutional funding. No additional grants to carry out or direct this particular research were obtained.

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Authors and Affiliations

  1. National Research Centre “Kurchatov institute”, 123098, Moscow, Russia

    E. D. Dlougach, M. N. Shlenskii & B. V. Kuteev

  2. National Nuclear Research University “Moscow Engineering Physics Institute”, 115409, Moscow, Russia

    M. N. Shlenskii

Authors
  1. E. D. Dlougach
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  2. M. N. Shlenskii
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  3. B. V. Kuteev
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Correspondence to E. D. Dlougach.

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Dlougach, E.D., Shlenskii, M.N. & Kuteev, B.V. Fast Beam Driven Neutron Yield in Thermonuclear Neutron Source Plasmas. Plasma Phys. Rep. 49, 1135–1144 (2023). https://doi.org/10.1134/S1063780X23600974

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  • DOI: https://doi.org/10.1134/S1063780X23600974

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