空气簇射切伦科夫光强横向分布测量  

Measurement of the Lateral Distribution of Cerenkov Light from Air Shower

作　　者：李延国[1] 袁余奎[1] 何长孝[1] 谭有恒[1] 董玉琚 袁澎[1] 张慧敏[1] 

机构地区：[1]中国科学院高能物理研究所,北京100039

出　　处：《高能物理与核物理》1993年第12期1070-1075,共6页High Energy Physics and Nuclear Physics

摘　　要：在北京怀柔建立了一个旨在研究广延空气簇射切伦科夫光强横向分布及其脉冲时间结构的光学阵列，与怀柔粒子阵联合观测，测量了簇射大小在２×１０＾５－１０＾７粒子范围的切伦科夫强横向分布，该分布在离轴心２０－１５０ｍ范围可表为指函数形式φ（Ｒ）－ｅｘｐ（－ｂＲ／１０＾４），初步结果与最近的一些实验和理论大致相符。In order to investigate both the lateral distribution of Cerenkov light and the pulse time structure depending on the longitudinal development of the shower, a small Cerenkov light array has been built in Huairo. Lateral distributions of Cerenkov light intensity from EAS have been measured using the combined Cerenkov-particle array, for showres in the size range 2×10~5 to 10~7 particles. The preliminary results are in agreement with the results of some recent experimental measurements and theoretical simulations.

关 键 词：广延空气簇射 切伦柯夫光 光强 

分 类 号：O572.131[理学—粒子物理与原子核物理]