期刊
PHYSICS OF PLASMAS
卷 23, 期 9, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4962677
关键词
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资金
- ITER-China Program [2015GB111003, 2014GB124005]
- JSPS-NRF-NSFC [NSFC-11261140328]
- National Science Foundation of China [11271357, 11575186, 11575185, 11505185, 11505186]
- Foundation for Innovative Research Groups of the NNSFC [11321061]
- Fundamental Research Funds for the Central Universities [WK2030040057]
We construct high order symmetric volume-preserving methods for the relativistic dynamics of a charged particle by the splitting technique with processing. By expanding the phase space to include the time t, we give a more general construction of volume-preserving methods that can be applied to systems with time-dependent electromagnetic fields. The newly derived methods provide numerical solutions with good accuracy and conservative properties over long time of simulation. Furthermore, because of the use of an accuracy-enhancing processing technique, the explicit methods obtain high-order accuracy and are more efficient than the methods derived from standard compositions. The results are verified by the numerical experiments. Linear stability analysis of the methods shows that the high order processed method allows larger time step size in numerical integrations. Published by AIP Publishing.
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