Stochastic heating and acceleration of minor ions by Alfven waves

NCU Institutional Repository > 地球科學學院 > 太空科學研究所 > 期刊論文 > Item 987654321/50463

請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/50463

題名:	Stochastic heating and acceleration of minor ions by Alfven waves
作者:	Wang,B;Wang,CB;Yoon,PH;Wu,CS
貢獻者:	太空科學研究所
關鍵詞:	SOLAR-WIND IONS;VELOCITY DISTRIBUTIONS;TEMPERATURE ANISOTROPY;CYCLOTRON FREQUENCY;KINETIC-PROPERTIES;HEAVY-IONS;CORONA;ULYSSES;ENERGIZATION;SWICS
日期:	2011
上傳時間:	2012-03-27 17:32:37 (UTC+8)
出版者:	國立中央大學
摘要:	The present paper addresses the stochastic heating of minor ions by obliquely-propagating low-frequency Alfven waves in the solar wind. An important characteristics of the stochastic heating is unearthed by means of test particle simulation. That is, when the wave amplitude exceeds some threshold condition for stochasticity, the time-asymptotic kinetic temperature associated with the minor ions becomes independent of the wave amplitude, and it always approaches the value dictated by the Alfven speed, to wit, T(kin.) similar to m(i)v(A)(2)/2. During the course of the heating process the minor ions gain a net average parallel speed, v(parallel to) similar to v(A) in the laboratory frame. These results are consistent with observations which find that minor heavy ions often move faster than the local protons with a speed roughly equal to the local Alfven speed. Citation: Wang, B., C. B. Wang, P. H. Yoon, and C. S. Wu (2011), Stochastic heating and acceleration of minor ions by Alfven waves, Geophys. Res. Lett., 38, L10103, doi:10.1029/2011GL047729.
關聯:	GEOPHYSICAL RESEARCH LETTERS
顯示於類別:	[太空科學研究所 ] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	463	檢視/開啟

在NCUIR中所有的資料項目都受到原著作權保護.

社群 sharing

資料載入中.....