Fast Beam Driven Neutron Yield in Thermonuclear Neutron Source Plasmas

E. D. Dlougach; Длугач Е. Д.; M. N. Shlenskii; Шленский М. Н.; B. V. Kuteev; Кутеев Б. В.

doi:10.31857/S0367292123600644

Fast Beam Driven Neutron Yield in Thermonuclear Neutron Source Plasmas

Authors: Dlougach E.D.¹, Shlenskii M.N.¹^,2, Kuteev B.V.¹
Affiliations:
1. National Research Centre “Kurchatov institute”
2. National Nuclear Research University “Moscow Engineering Physics Institute”
Issue: Vol 49, No 10 (2023)
Pages: 937-946
Section: TOKAMAKS
URL: https://rjsvd.com/0367-2921/article/view/668429
DOI: https://doi.org/10.31857/S0367292123600644
EDN: https://elibrary.ru/ZWJWSG
ID: 668429

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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.

Keywords

neutral beam injection, thermonuclear fusion neutron source, FNS, NESTOR

References

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