The search for primary particle tracks in nucleon-nucleus interactions with gamma ray energy ΣEγ ≥ 3 TeV registered in stratospheric X-ray emulsion chambers using data of the RUNJOB experiment
The search for primary particle tracks in nucleon-nucleus interactions with gamma ray energy ΣEγ ≥ 3 TeV registered in stratospheric X-ray emulsion chambers using data of the RUNJOB experiment
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DOI：
10.1051/epjconf/201614519011
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
I. S. Zayarnaya;T. A. Irkhina
中科院分区：
文献类型：
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作者：
I. S. Zayarnaya;T. A. Irkhina
我们在这里介绍了用一种新的方法对在平流层x射线乳剂室（REC）中记录的RUNJOB（俄罗斯-日本联合气球）核-核相互作用实验数据进行再处理的结果，这种方法用于搜索和追踪核乳剂中的星系粒子。在REC记录的RUNJOB ' 96-3B、RUNJOB ' 97-6A和RUNJOB ' 99-11A，B中，电磁分量中释放的能量分别为ΣE γ≥3 TeV和ΣE γ≥5 TeV的相互作用中，约有一半（~ 50）在粒子轨迹定位精度单独定义的搜索区域内没有发现单个带电粒子轨迹。初级质子轨迹的缺失与RUNJOB实验数据的原始处理是一致的。在观察到或没有单个带电粒子轨迹的两组事件中，天顶角分布是不同的。在60°到79°的天顶角范围内，REC中初级粒子到相互作用顶点的平均穿透深度相差两倍。
We present here the result of a retreatment of data from the RUNJOB (RUssia-Nippon JOint Balloon) experiment of nucleon-nucleus interactions registered in stratospheric X-ray emulsion chambers (REC) using a new method for searching and tracing of galactic particles in nuclear emulsions. In about halfcof these interactions (∼ 50) recorded in REC RUNJOB‘96-3B, RUNJOB‘97-6A and RUNJOB‘99-11A,B with energy released in the electromagnetic component ΣE γ ≥ 3 TeV and ΣE γ ≥ 5 TeV respectively, single charged particle tracks are not found within the search area defined individually by the particle track location accuracy. The absence of primary proton tracks is consistent with the original treatment of the RUNJOB experimental data. There is a difference in the zenith angular distribution for two groups of events in which a single charged particle track is observed or absent. The average penetration depth of the primary particles in REC to the interaction vertex in the zenith angle range from 60∘ to 79∘ differs by a factor two for these groups.