Euler potentials'discontinuity in the presence of field line-aligned currents

	Euler potentials'discontinuity in the presence of field line-aligned currents
	Huang Tiansen; Wu Dejin
刊名	Chinese Science Bulletin
	2012
卷号	57 期号:12 页码:1436
ISSN号	1001-6538
英文摘要	Since their use in the study of charged particle motion in the 1960s,Euler potentials(α,β)have been widely employed as magnetic field coordinates in both space plasma and fusion plasma studies.People related them to magnetic vector potential A via the relation A=α▽β subject to gauge condition A·B=0(B is the magnetic induction).For a given magnetic field,the Euler potentials are often constructed with the relation B·△ S=△α△βon a surface that crosses the field lines,where △ S is the area-element surrounding by two line-elements corresponding to the changes in α and β,then mapping the values of α and βalong field lines into space.In this short paper,we show that in the presence of field line-aligned currents,the mapping does not work and the orthogonality gauge condition is not satisfied.
语种	英语
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/31588]
专题	中国科学院紫金山天文台
作者单位	中国科学院紫金山天文台
推荐引用方式 GB/T 7714	Huang Tiansen,Wu Dejin. Euler potentials'discontinuity in the presence of field line-aligned currents[J]. Chinese Science Bulletin,2012,57(12):1436.
APA	Huang Tiansen,&Wu Dejin.(2012).Euler potentials'discontinuity in the presence of field line-aligned currents.Chinese Science Bulletin,57(12),1436.
MLA	Huang Tiansen,et al."Euler potentials'discontinuity in the presence of field line-aligned currents".Chinese Science Bulletin 57.12(2012):1436.