雷暴期间次级宇宙线粒子强度瞬时变化研究  

Study of the Instantaneous Change of Secondary Cosmic Ray During Thunderstorm

作　　者：徐斌[1,2] 别业广[1] 邹丹[3] 

机构地区：[1]湖北工业大学理学院,武汉430068 [2]西南交通大学物理科学与技术学院,成都610031 [3]湖北工业大学工程技术学院,武汉430068

出　　处：《空间科学学报》2012年第4期501-505,共5页Chinese Journal of Space Science

基　　金：湖北省教育厅优秀中青年人才项目(Q20111407);湖北工业大学博士科研启动基金项目(BSQD0917)共同资助

摘　　要：雷暴期间大气电场强度变化及其伴随的宇宙线粒子增长的研究,对于理解大气电场对宇宙线次级粒子的加速机制具有极其重要的意义.2006年4月至8月期间,西藏羊八井宇宙线观测站记录到了20多次雷暴事件.分析了雷暴期间,ARGO实验scaler模式下次级宇宙线计数与大气电场之间的相关性.结果显示,雷暴期间大气电场剧烈变化时,多重数n=1,2的次级宇宙线计数率有明显增长,增幅在1%～9%之间,然而n=3,n≥4的次级宇宙线计数率增长不明显,甚至没有增长.该结果为进一步研究雷暴期间大气电场对次级宇宙线的加速机制打下了基础.Coincident study on the Atmospheric Electric Field （AEF） change and EAS particle increase during thunderstorm is very important in understanding the acceleration of secondary cosmic rays particle caused by AEF. From April to August, 2006, thunderstorms were frequently recorded at Yangbajing Cosmic Ray Observatory. This work analyzed the correlation between AEF and scaler mode counting rate during thunderstorm when the AEF has violent change. The results revealed that the counting rate of four channels had different feedback on the violent change of AEF, which showed that their energy and most components were different. In general, counting rate in channels of n = 1, 2 are found to have large increase varying from 1% to 9%, while there was less or no significant changes for channels of n = 3, n ≥ 4. These preliminary results were very important tofurther study of the acceleration mechanism of secondary cosmic rays.

关 键 词：雷暴活动 大气电场 次级宇宙线 

分 类 号：P172.4[天文地球—天文学]