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Populations of excited parabolic states of hydrogen beam in fusion plasmas



Oleksandr Marchuk, Yuri Ralchenko


The injection of a neutral beam into the core of magnetically confined plasmas is a foundation for various plasma diagnostics, including charge-exchange recombination spectroscopy, beam-emission spectroscopy and motional Stark effect diagnostics. We review the current status of statistical and non-statistical collisional-radiative models used for calculation of populations of hydrogen beam excited states. The recently developed collisional-radiative (CR) model in parabolic states, which utilizes collisional data calculated in the Glauber approximation, is discussed in detail. CR simulations with this model show non-statistical emission for the $\sigma$ and $\pi$ components of the H$_\alpha$ Stark multiplet and provide $m$-resolved populations. The results of simulations are in excellent agreement with the systematic MSE measurements from the JET tokamak.
Atomic processes in basic and applied physics
Publisher Info
Springer, New York, NY


fusion, plasma, neutral beam, motional Stark effect, collisional-radiative modeling


Marchuk, O. and Ralchenko, Y. (2012), Populations of excited parabolic states of hydrogen beam in fusion plasmas, Atomic processes in basic and applied physics, Springer, New York, NY, [online], (Accessed May 22, 2024)


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Created January 1, 2012, Updated July 18, 2023