Fair Weather Neutron Bursts From Photonuclear Reactions by Extensive Air Shower Core Interactions in the Ground and Implications for Terrestrial Gamma‐ray Flash Signatures
Fair Weather Neutron Bursts From Photonuclear Reactions by Extensive Air Shower Core Interactions in the Ground and Implications for Terrestrial Gamma‐ray Flash Signatures
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DOI：
10.1029/2020gl090033
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发表时间：
2021-02
影响因子：
5.2
通讯作者：
G. Bowers;X. Shao;William Blaine;B. Dingus;David M. Smith;J. Chaffin;J. Ortberg;H. Rassoul;Cheng Ho;L. Nellen;N. Fraija;C. Álvarez;J. C. Arteaga-Velázquez;V. Baghmanyan;E. Belmont-Moreno;K. Caballero-Mora;A. Carramiñana;S. Casanova;E. de la Fuente;M. González;F. Hueyotl-Zahuantitla;O. Martinez;J. Matthews;E. Moreno;M. Newbold;E. Pérez-Pérez-E.-Pérez-Pérez-1431205495;I. Torres
中科院分区：
文献类型：
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作者：
G. Bowers;X. Shao;William Blaine;B. Dingus;David M. Smith;J. Chaffin;J. Ortberg;H. Rassoul;Cheng Ho;L. Nellen;N. Fraija;C. Álvarez;J. C. Arteaga-Velázquez;V. Baghmanyan;E. Belmont-Moreno;K. Caballero-Mora;A. Carramiñana;S. Casanova;E. de la Fuente;M. González;F. Hueyotl-Zahuantitla;O. Martinez;J. Matthews;E. Moreno;M. Newbold;E. Pérez-Pérez-E.-Pérez-Pérez-1431205495;I. Torres
我们报告了在墨西哥高海拔水切伦科夫阵列的 7.62 cm x⊘7.62 cm LaBr3 闪烁探测器附近的宇宙射线阵雨影响后出现的异常长持续时间 (2 ms) 计数率爆发，之前由 Stenkin 等人描述过。 （2001），并被称为“中子爆发”。在我们的 LaBr3 探测器中，最大的突发在 2 毫秒内产生了 198 个计数。我们模拟了中子爆发反照率通量（即撞击地面的大范围空气簇射核心产生的二次发射），并表明（1）特征光谱和计数率可以通过地面中的中子吸收很好地解释；（2）任何产生中子的宇宙射线二次，无论是通过强子非弹性碰撞，还是通过伽马射线产生光中子，都会产生相同的特征光谱。这意味着产生向下伽马射线束的其他自然现象，如地面伽马射线闪光，应该从土壤中发生的光中子反应中产生类似的“中子爆发”特征。
We report on anomalously long duration (2 ms) count rate bursts following the impact of cosmic ray showers near a 7.62 cm x⊘7.62 cm LaBr3 scintillation detector at the High Altitude Water Cherenkov array in Mexico, previously described by Stenkin et al. (2001), and termed “neutron bursts.” The largest burst produced 198 counts within 2 ms in our LaBr3 detector. We simulate the neutron burst albedo flux (that is, secondary emissions from an extensive air shower core impacting the ground), and show that (1) the characteristic spectra and count rates are well explained by neutron absorption in the ground and (2) any cosmic ray secondary that produces neutrons, either through hadron inelastic collisions, or photoneutron production by gamma‐rays, produces the same characteristic spectra. This implies that other natural phenomena that produce downward beams of gamma‐rays, like Terrestrial gamma ray flashes, should produce a similar “neutron burst” signature from the photoneutron reactions occurring in the soil.