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

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 太阳和太阳系等离子体研究团组

	Euler potentials' discontinuity in the presence of field line-aligned currents
	Huang TianSen 1,2; Wu DeJin1
刊名	CHINESE SCIENCE BULLETIN
	2012-04-01
卷号	57 期号:12 页码:1436-1437
关键词	plasmas space physics Euler potential drift motion
ISSN号	1001-6538
英文摘要	Since their use in the study of charged particle motion in the 1960s, Euler potentials (alpha, beta) 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 = alpha del beta 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 . Delta S = Delta alpha Delta beta on a surface that crosses the field lines, where Delta S is the area-element surrounding by two line-elements corresponding to the changes in alpha and beta, then mapping the values of alpha and beta along 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.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	CHARGED PARTICLES ; MOTION
收录类别	SCI
语种	英语
WOS记录号	WOS:000303218800014
公开日期	2013-01-31
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/8058]
专题	紫金山天文台_太阳和太阳系等离子体研究团组
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Prairie View A&M Univ, Coll Arts & Sci, Solar Observ, Houston, TX 77446 USA
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):1436-1437.
APA	Huang TianSen,&Wu DeJin.(2012).Euler potentials' discontinuity in the presence of field line-aligned currents.CHINESE SCIENCE BULLETIN,57(12),1436-1437.
MLA	Huang TianSen,et al."Euler potentials' discontinuity in the presence of field line-aligned currents".CHINESE SCIENCE BULLETIN 57.12(2012):1436-1437.