Atomic collisional data for neutral beam modeling in fusion plasmas

C. Hill; Dipti; K. Heinola; A. Dubois; N. Sisourat; A. Taoutioui; H. Agueny; K. Tőkési; I. Ziaeian; C. Illescas; A. Jorge; L. Méndez; A.S. Kadyrov; N.W. Antonio; A.M. Kotian; T. Kirchner; A.C.K. Leung; J. Ko; J.K. Lee; O. Marchuk; M.G. O’Mullane; E. Litherland-Smith; G.I. Pokol; O. Asztalos; P. Balazs; Y. Wu; C.C. Jia; L. Liu; J.G. Wang

doi:10.1088/1741-4326/acf5da

Nuclear Fusion (Jan 2023)

Atomic collisional data for neutral beam modeling in fusion plasmas

C. Hill,
Dipti,
K. Heinola,
A. Dubois,
N. Sisourat,
A. Taoutioui,
H. Agueny,
K. Tőkési,
I. Ziaeian,
C. Illescas,
A. Jorge,
L. Méndez,
A.S. Kadyrov,
N.W. Antonio,
A.M. Kotian,
T. Kirchner,
A.C.K. Leung,
J. Ko,
J.K. Lee,
O. Marchuk,
M.G. O’Mullane,
E. Litherland-Smith,
G.I. Pokol,
O. Asztalos,
P. Balazs,
Y. Wu,
C.C. Jia,
L. Liu,
J.G. Wang

Affiliations

C. Hill: ORCiD; International Atomic Energy Agency , Vienna A-1400, Austria
Dipti: ORCiD; International Atomic Energy Agency , Vienna A-1400, Austria
K. Heinola: ORCiD; International Atomic Energy Agency , Vienna A-1400, Austria
A. Dubois: Sorbonne Université, CNRS, Laboratoire de Chimie Physique—Matière et Rayonnement , Paris, F-75005, France
N. Sisourat: ORCiD; Sorbonne Université, CNRS, Laboratoire de Chimie Physique—Matière et Rayonnement , Paris, F-75005, France
A. Taoutioui: ORCiD; MTA Atomki Lendület Quantum Correlations Research Group, Institute for Nuclear Research , Debrecen, P.O. Box 51, H-4001, Hungary
H. Agueny: IT Division, University of Bergen , N-5020 Bergen, Norway
K. Tőkési: ORCiD; Institute for Nuclear Research, (ATOMKI) , Debrecen 4026, Hungary
I. Ziaeian: ORCiD; Institute for Nuclear Research, (ATOMKI) , Debrecen 4026, Hungary
C. Illescas: ORCiD; Departamento de Química, Facultad de Ciencias, Universidad Autónoma de Madrid , Madrid, Spain
A. Jorge: Departamento de Química, Facultad de Ciencias, Universidad Autónoma de Madrid , Madrid, Spain
L. Méndez: ORCiD; Departamento de Química, Facultad de Ciencias, Universidad Autónoma de Madrid , Madrid, Spain
A.S. Kadyrov: ORCiD; Department of Physics, Curtin University , Perth, Australia
N.W. Antonio: ORCiD; Department of Physics, Curtin University , Perth, Australia
A.M. Kotian: ORCiD; Department of Physics, Curtin University , Perth, Australia
T. Kirchner: ORCiD; Department of Physics and Astronomy, York University , Toronto, Ontario M3J 1P3, Canada
A.C.K. Leung: ORCiD; Department of Physics and Astronomy, York University , Toronto, Ontario M3J 1P3, Canada
J. Ko: ORCiD; Korea Institute of Fusion Energy , Daejeon, Korea, Republic Of; Department of Plasma and Nuclear Fusion, University of Science and Technology , Daejeon, Korea, Republic Of
J.K. Lee: ORCiD; Korea Institute of Fusion Energy , Daejeon, Korea, Republic Of; Department of Plasma and Nuclear Fusion, University of Science and Technology , Daejeon, Korea, Republic Of
O. Marchuk: ORCiD; Institut für Energie- und Klimaforschung—Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), Forschungszentrum Jülich GmbH , 52425 Jülich, Germany
M.G. O’Mullane: ORCiD; Department of Physics, University of Strathclyde , Glasgow, United Kingdom of Great Britain and Northern Ireland; UK Atomic Energy Authority, Culham Science Centre , Abingdon OX14 3DB, United Kingdom of Great Britain and Northern Ireland
E. Litherland-Smith: UK Atomic Energy Authority, Culham Science Centre , Abingdon OX14 3DB, United Kingdom of Great Britain and Northern Ireland
G.I. Pokol: Institute of Nuclear Techniques, Budapest University of Technology and Economics , Budapest, Hungary; Fusion Plasma Physics Department, Centre For Energy Research , Budapest, Hungary
O. Asztalos: ORCiD; Institute of Nuclear Techniques, Budapest University of Technology and Economics , Budapest, Hungary; Fusion Plasma Physics Department, Centre For Energy Research , Budapest, Hungary
P. Balazs: Institute of Nuclear Techniques, Budapest University of Technology and Economics , Budapest, Hungary; Fusion Plasma Physics Department, Centre For Energy Research , Budapest, Hungary
Y. Wu: Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics (IAPCM) , Beijing, China
C.C. Jia: Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics (IAPCM) , Beijing, China
L. Liu: ORCiD; Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics (IAPCM) , Beijing, China
J.G. Wang: Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics (IAPCM) , Beijing, China

DOI: https://doi.org/10.1088/1741-4326/acf5da
Journal volume & issue: Vol. 63, no. 12
p. 125001

Abstract

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The injection of energetic neutral particles into the plasma of magnetic confinement fusion reactors is a widely-accepted method for heating such plasmas; various types of neutral beam are also used for diagnostic purposes. Accurate atomic data are required to properly model beam penetration into the plasma and to interpret photoemission spectra from both the beam particles themselves (e.g. beam emission spectroscopy) and from plasma impurities with which they interact (e.g. charge exchange recombination spectroscopy). This paper reviews and compares theoretical methods for calculating ionization, excitation and charge exchange cross sections applied to several important processes relevant to neutral hydrogen beams, including H + Be ^4+ and H + H ^+ . In particular, a new cross section for the proton-impact ionization of H (1s) is recommended which is significantly larger than that previously accepted at fusion-relevant energies. Coefficients for an empirical fit function to this cross section and to that of the first excited states of H are provided and uncertainties estimated. The propagation of uncertainties in this cross section in modeling codes under JET-like conditions has been studied and the newly-recommended values determined to have a significant effect on the predicted beam attenuation. In addition to accurate calculations of collisional atomic data, the use of these data in codes modeling beam penetration and photoemission for fusion-relevant plasma density and temperature profiles is discussed. In particular, the discrepancies in the modeling of impurities are reported. The present paper originates from a Coordinated Research Project (CRP) on the topic of fundamental atomic data for neutral beam modeling that the International Atomic Energy Agency (IAEA) ran from 2017 to 2022; this project brought together ten research groups in the fields of fusion plasma modeling and collisional cross section calculations. Data calculated during the CRP is summarized in an appendix and is available online in the IAEA’s atomic database, CollisionDB.

Published in Nuclear Fusion

ISSN: 0029-5515 (Print); 1741-4326 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Physics: Nuclear and particle physics. Atomic energy. Radioactivity
Website: https://iopscience.iop.org/journal/0029-5515

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