Density Spectrum of Charged Particles in Extensive Air Showers
Density Spectrum of Charged Particles in Extensive Air Showers
复制标题
大面积空气簇射中带电粒子的密度谱
DOI：
10.1143/jpsj.19.800
复制
发表时间：
1964
影响因子：
1.7
通讯作者：
I. Katsumata
中科院分区：
文献类型：
--
作者：
I. Katsumata
在海拔2770米的高山上，用塑料闪烁器获得了广泛的空气簇射的密度谱。在50 ~ 104粒/m2范围内，积分密度谱表示为Δ-1.55 <$0.05。利用EAS阵列观测了伴随的EAS，分析了它们对密度谱的贡献。结果如下。密度谱指数与直接由EAS阵列数据得到的尺寸谱指数不一致。这是由于EAS的尺寸越大，中心区域的横向结构变得越陡峭。此外，在相同大小的阵雨中，侧向结构的波动也很大。密度谱的指数随海拔的升高而逐渐减小，山上的指数比海平面的指数小10%。虽然统计误差较大，但积分密度谱的指数从1.55增加到2.55。
A density spectrum of extensive air showers was obtained by means of a plastic scintillator at a mountain altitude, 2770 m above sea level. In the range from 50 to 10 4 particles/m 2 , the integral density spectrum is expressed as Δ -1.55±0.05 . By an EAS array the accompanied EAS's were also observed, and their contributions to the density spectrum were analyzed. The results are as follows. There is no agreement beween the exponent of density spectrum and that of size spectrum which was obtained directly from EAS array data in this experiment. This is due to the fact that the size of EAS is the larger, the lateral structure of the central region becomes steeper. Moreover, the lateral structure fluctuates considerably in the same size showers. The exponent of the density spectrum seems to decrease gradually with increasing altitude, the value on the mountain is 10% smaller than that of the sea level. Though statistical error is large, the exponent of the integral density spectrum increases from 1.55 to 2....