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arXiv 0907.1484astro-ph.HE
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测量强子在广泛空气簇射中衰减的新方法

A new method to measure the attenuation of hadrons in extensive air showers

W. D. Apel

摘要:

高能宇宙射线撞击地球大气层,相互作用产生大范围的空气簇射。本文提出了一种新的方法来推断强子在空气簇射中的衰减。用KASCADE实验的闪烁体阵列记录的电子和μ子的数目来估计簇射诱导初级粒子的能量。用大型强子量能器测量了达到观测水平的强子能量。利用到达地面的能量与初级粒子能量的比值,导出了强子在空气簇射中的衰减长度。在从$10^6$ GeV到$3\cdot10^7$ GeV的能量范围内,获得的衰减长度从170 \gcm 2增加到210 \gcm 2。实验结果进行了比较,根据当代高能量相互作用模型的模拟预测。

英文摘要:

Extensive air showers are generated through interactions of high-energy cosmic rays impinging the Earth's atmosphere. A new method is described to infer the attenuation of hadrons in air showers. The numbers of electrons and muons, registered with the scintillator array of the KASCADE experiment are used to estimate the energy of the shower inducing primary particle. A large hadron calorimeter is used to measure the hadronic energy reaching observation level. The ratio of energy reaching ground level to the energy of the primary particle is used to derive an attenuation length of hadrons in air showers. In the energy range from $10^6$ GeV to $3\cdot10^7$ GeV the attenuation length obtained increases from 170 \gcm2 to 210 \gcm2. The experimental results are compared to predictions of simulations based on contemporary high energy interaction models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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