| 磁场重联中电子加速问题的物理分析和数值研究 |
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| 引用本文： | 丁健,李毅,王水.磁场重联中电子加速问题的物理分析和数值研究[J].地球物理学报,2006,49(4):936-942. |
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| 作者姓名： | 丁健 李毅 王水 |
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| 作者单位： | 中国科技大学地球和空间科学学院，合肥 230026 |
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| 基金项目： | 国家自然科学基金（40336052）和高等学校博士学科点专项科研基金资助课题（20020358019）. |
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| 摘 要： | 观测表明耀斑中电子加速发生在软X射线耀斑环上方的磁重联区域.在重联电流片中被super Dreicer电场直接加速似乎是产生能量在10keV～10MeV之间高能电子的最直接的方式.本文的结果证明纵向电磁场可以有效地将电子“锁”在重联电流片上，使得横向电场得以直接加速电子.对于解释产生相对论性粒子的脉冲式耀斑，这可能是一个有效的机制.
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| 关 键 词： | 磁场重联 试验电子 电子加速 横向电场 |
| 文章编号： | 0001-5733（2006）04-0936-07 |
| 收稿时间： | 2005-12-22 |
| 修稿时间： | 2005-12-222006-04-04 |
Physical analysis and numerical simulation on the mechanism of electron acceleration in magnetic reconnection |
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| DING Jian,LI Yi,WANG Shui.Physical analysis and numerical simulation on the mechanism of electron acceleration in magnetic reconnection[J].Chinese Journal of Geophysics,2006,49(4):936-942. |
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| Authors: | DING Jian LI Yi WANG Shui |
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| Institution: | School of Earth and Space Science, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | Observations show that electron acceleration in solar flares occurs in magnetic reconnection regions above the soft X-ray flare loops in the corona. Acceleration by a super-Dreicer electric field in a reconnecting current sheet appears to be the most direct way of producing electrons in the energy range of 10keV to 10MeV.The results of this study demonstrate that the longitudinal magnetic field efficiently "locks" electrons in the reconnecting current sheet,thus allowing the acceleration by the transverse electric field.This mechanism may be useful to interpret the generation of relativistic ions in large impulsive flares. |
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| Keywords: | Magnetic reconnection Test electron Electron acceleration Transverse electric field |
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