A NOVEL METHOD TO DETERMINE MAGNETIC FIELDS IN LOW-DENSITY PLASMA FACILITATED THROUGH ACCIDENTAL DEGENERACY OF QUANTUM STATES IN Fe9+

doi:10.1088/0004-637X/807/1/69

	A NOVEL METHOD TO DETERMINE MAGNETIC FIELDS IN LOW-DENSITY PLASMA FACILITATED THROUGH ACCIDENTAL DEGENERACY OF QUANTUM STATES IN Fe9+
	Li, Wenxian 1,2; Grumer, Jon 3; Yang, Yang 1,2; Brage, Tomas 3; Yao, Ke 1,2; Chen, Chongyang 1,2; Watanabe, Tetsuya 4; Jonsson, Per 5; Lundstedt, Henrik 6; Hutton, Roger 1,2
刊名	ASTROPHYSICAL JOURNAL
	2015-07-01
卷号	807 页码:6
关键词	atomic processes Sun: corona Sun: magnetic fields Sun: UV radiation techniques: spectroscopic
ISSN号	0004-637X
DOI	10.1088/0004-637X/807/1/69
英文摘要	We propose a new method to determine magnetic fields, by using the magnetic-field-induced electric dipole transition 3p(4) 3d D-4(7/2) -> 3p(5) P-3/2 in Fe9+ ions. This ion has a high abundance in astrophysical plasma and is therefore well suited for direct measurements of even rather weak fields in, e.g., solar flares. This transition is induced by an external magnetic field and its rate is proportional to the square of the magnetic field strength. We present theoretical values for what we will label the reduced rate and propose that the critical energy difference between the upper level in this transition and the close-to-degenerate 3p(4) 3d D-4(5/2) should be measured experimentally since it is required to determine the relative intensity of this magnetic line for different magnetic fields.
资助项目	Chinese National Fusion Project for ITER[2015GB117000] ; Shanghai Leading Academic Discipline Project[B107] ; Swedish Institute under the Visby programme
WOS关键词	SOLAR ACTIVE-REGION ; ATOMIC DATA ; RADIATIVE RATES ; CORONAL LINES ; ASTROPHYSICS ; TRANSITIONS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000358945200069
资助机构	Chinese National Fusion Project for ITER ; Shanghai Leading Academic Discipline Project ; Swedish Institute under the Visby programme
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/40258]
专题	中国科学院近代物理研究所
通讯作者	Li, Wenxian
作者单位	1.Minist Educ, Key Lab Appl Ion Beam Phys, Shanghai, Peoples R China 2.Fudan Univ, Inst Modern Phys, Shanghai EBIT Lab, Shanghai 200433, Peoples R China 3.Lund Univ, Dept Phys, Div Math Phys, S-22100 Lund, Sweden 4.Natl Astron Observ Japan, Tokyo, Japan 5.Malmo Univ, Div Mat Sci & Computat Math, Malmo, Sweden 6.Swedish Inst Space Phys, Solar Terr Phys Div, Lund, Sweden
推荐引用方式 GB/T 7714	Li, Wenxian,Grumer, Jon,Yang, Yang,et al. A NOVEL METHOD TO DETERMINE MAGNETIC FIELDS IN LOW-DENSITY PLASMA FACILITATED THROUGH ACCIDENTAL DEGENERACY OF QUANTUM STATES IN Fe9+[J]. ASTROPHYSICAL JOURNAL,2015,807:6.
APA	Li, Wenxian.,Grumer, Jon.,Yang, Yang.,Brage, Tomas.,Yao, Ke.,...&Zou, Yaming.(2015).A NOVEL METHOD TO DETERMINE MAGNETIC FIELDS IN LOW-DENSITY PLASMA FACILITATED THROUGH ACCIDENTAL DEGENERACY OF QUANTUM STATES IN Fe9+.ASTROPHYSICAL JOURNAL,807,6.
MLA	Li, Wenxian,et al."A NOVEL METHOD TO DETERMINE MAGNETIC FIELDS IN LOW-DENSITY PLASMA FACILITATED THROUGH ACCIDENTAL DEGENERACY OF QUANTUM STATES IN Fe9+".ASTROPHYSICAL JOURNAL 807(2015):6.