Heavy ions in 3He enhanced solar energetic particle events

被引：0
|
作者：
Ho, GC [1 ]
Roelof, EC [1 ]
Mason, GM [1 ]
Gold, RE [1 ]
Krimigis, SM [1 ]
Dwyer, JR [1 ]
机构：
[1] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA
来源：
ACCELERATION AND TRANSPORT OF ENERGETIC PARTICLES OBSERVED IN THE HELIOSPHERE | 2000年 / 528卷
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Prior to the launch of ACE, He-3/He-4 ratios in He-3-rich solar energetic particle (SEP) events were typically reported at 10% or higher only from above a few MeV per nucleon because of limited instrument capabilities. However, with the new ULEIS instrument on ACE, we are able to explore the He-3/He-4 ratio below the 10% level and also at energy less than I MeV per nucleon. We have investigated a total of 45 He-3-rich (He-3/He-4 > 0.01 at 0.23 - 0.45 MeV per nucleon) SEP events from November 1997 to May 1999. We found the event average He-3/He-4 and Fe/C ratios are clearly correlated. This correlation suggests that the He-3 and Fe enrichments could be related and places further constraints on any He-3-enhancement models.
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页码：99 / 102
页数：4
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