Статья

Atomic collisional data for neutral beam modeling in fusion plasmas

C. HillIAEA, Vienna, AUSTRIADipti DiptiNuclear Applications, IAEA, Vienna, AUSTRIAK. HeinolaInternational Atomic Energy Agency, Vienna, AUSTRIAAlain DuboisLaboratoire de Chimie Physique – Matière et Rayonnement, Sorbonne Universite, Paris, Île-de-France, FRANCENicolas SisouratLaboratoire de Chimie Physique - Matière et Rayonnement, Sorbonne Université, Paris, Île-de-France, FRANCEAbdelmalek TaoutiouiLaboratoire de Chimie Physique – Matière et Rayonnement, Sorbonne Universite, Paris, Île-de-France, FRANCEHicham AguenyUniversitetet i Bergen, Bergen, NORWAYK. TőkésiInstitute for Nuclear Research (ATOMKI), Debrecen, HUNGARYIman ZiaeianInstitute for Nuclear Research (ATOMKI), Debrecen, HUNGARYClara IllescasDepartmento de Quimica Facultad de Ciencias, Universidad Autonoma de Madrid, m-13, 609, Cantoblanco Universidad, E-28049 Madrid, Madrid, 28049, SPAINAlba JorgeDepartmento de Quimica Facultad de Ciencias, Universidad Autonoma de Madrid, Madrid, SPAINL. MéndezDepartamento de Quimica - C-IX, Universidad Autonoma de Madrid, Cantoblanco, E-28049 Madrid, Madrid, SPAINA. S. KadyrovDepartment of Physics, Astronomy and Medical Radiation Sciences, Curtin University, GPO Box U1987, Perth, Western Australia, 6845, AUSTRALIAN. W. AntonioDepartment of Physics, Astronomy and Medical Radiation Sciences, Curtin University, Perth, Western Australia, AUSTRALIAAks M. KotianDepartment of Physics, Astronomy and Medical Radiation Sciences, Curtin University, Perth, Western Australia, AUSTRALIATom KirchnerDepartment of Physics and Astronomy, York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, CANADAAnthony C. K. LeungDepartment of Physics and Astronomy, York University, Toronto, Ontario, CANADAJ. KoKSTAR Research Center, Korea Institute of Fusion Energy, Daejeon, Korea (the Republic of)J. K. LeeKorea University of Science and Technology, Daejeon, Korea (the Republic of)O. MarchukInstitut für Energie- und Klimaforschung - Plasmaphysik, Forschungszentrum Juelich, Juelich, 52425, GERMANYM. O’MullaneUnited Kingdom Atomic Energy Authority, Didcot, Oxfordshire, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELANDE. Litherland–SmithUnited Kingdom Atomic Energy Authority, Didcot, Oxfordshire, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELANDG. PokolDepartment of Nuclear Techniques, Budapest University of Technology and Economics, Muegyetem rkp. 3., Budapest, H-1111, HUNGARYÖ. AsztalosInstitute of Nuclear Techniques, Budapest University of Technology and Economics, Budapest, Hungary, Budapest, HUNGARYPeter BalazsInstitute of Nuclear Techniques, Budapest Institute of Technology and Economics, Budapest, HUNGARYYong WuInstitute of applied physics and computational mathematics, Beijing, CHINAC C JiaInstitute of applied physics and computational mathematics, Beijing, CHINAL. LiuInstitute of Applied Physics and Computational Mathematics, Chinese Academy of Engineering Physics (CAEP), Beijing, CHINAJianguo WangInstitute of Applied Physics and Computation Mathematics Beijing, Beijing, CHINA

2023en

ABI

Аннотация

Abstract 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.

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Идентификаторы

DOI: 10.1088/1741-4326/acf5da

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Цитирований: 4Использованных источников: 0

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