The Kolar Gold Fields neutrino experiment II. Atmospheric muons at a depth of 7000 hg cm-2 (Kolar)
The Kolar Gold Fields neutrino experiment II. Atmospheric muons at a depth of 7000 hg cm-2 (Kolar)
复制标题
科拉尔金矿场中微子实验 II。
DOI：
10.1098/rspa.1971.0120
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发表时间：
1971
期刊：
影响因子：
--
通讯作者：
A. Wolfendale
中科院分区：
文献类型：
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作者：
M. Krishnaswamy;M. Menon;V. S. Narasimham;K. Hinotani;N. Ito;S. Miyake;J. Osborne;A. J. Parsons;A. Wolfendale
为了寻找宇宙线中微子的相互作用产物，印度南部的科勒金矿进行了一项实验。该探测器在2316米岩石深度的四年运行过程中，记录了约165个粒子，这些粒子被归因于大气(不同于中微子)起源的µ子。本文描述了对这些粒子的测量结果。在该深度(2316m科拉岩相当于7.6×105g cm-2的标准岩石)测得的垂直强度为(1.1±0.2)10-6m-2 S-1sr-1。包括其他工作人员在同一金矿其他地点进行的浅层深度测量，与数据的最佳拟合给出了深度范围4000<；h<；9500HG cm-2科拉岩(1 HG cm-2=102g cm-2)的关系式I(H)=7.73x10-3exp(-h/790)m-2sr-1 S-1。对工作深度的大气µ子的平均能量进行了近似估计，其值约为330GeV，与预期值并不矛盾。
An experiment has been performed in the Kolar Gold Fields in Southern India to search for the interaction products of cosmic ray neutrinos. In the course of four years operation of the detectors at a depth of 2316 m of rock, some 165 particles were recorded which were attributed to muons of atmospheric (as distinct from neutrino-) origin and the present paper describes the results of measurements on these particles. The measured vertical intensity at the depth in question (2316 m of Kolar rock corresponding to 7.6 x 105 g cm-2 of standard rock) is (1.1 ± 0.2) 10-6 m-2 s-1 sr-1. Including measurements at shallower depths by other workers, from sites elsewhere in the same Gold Fields, a best fit to the data gives the relation I(h) = 7.73 x 10-3 exp (–h/790) m-2 sr-1 s-1 for depth range 4000 < h < 9500 hg cm-2 Kolar rock (1 hg cm-2 = 102 g cm-2). An approximate estimate has been made of the mean energy of the atmospheric muons at the depth of operation; its value, ca. 330 GeV, is not inconsistent with the expected value.