标题： 宇宙射线在国庆日事件期间离子生成率以及短、中和长期电离效应的计算 显示英文标题

标题： Computation of ion production rate and short, mid and long term ionization effect by cosmic rays during Bastille day event

摘要： 银河宇宙射线是地球平流层和对流层电离的主要来源。 由初级宇宙射线粒子引起的电离在与大气物理和化学相关的各种过程中非常重要，特别是对微量成分而言。 在主要太阳高能粒子事件之后，大气中的离子生成率比平均值有所增强，特别是在极盖地区。 在太阳活动周期23中，我们观察到了几次强烈的地表增强事件，其中最强的之一是2000年7月14日的“七月四日”事件。 在本文中，我们应用了一个完整的蒙特卡罗三维模型来计算宇宙射线引起的电离。 该模型基于PLANETOCOSMICS代码的大气簇射模拟，离子生成率被认为是来自银河系和太阳的宇宙射线的叠加。 离子生成率是海平面以上高度的函数，相对于银河宇宙射线的短期、中期和长期电离效应也进行了计算。 显示英文摘要

摘要： The galactic cosmic rays are the main source of ionization in the Earth stratosphere and troposphere. The induced by primary cosmic ray particles ionization is important in various processes related to atmospheric physics and chemistry, specifically the minor constituents. The ion production in the atmosphere is enhanced compared to the average following major solar energetic particles events, specifically over the polar caps. During the solar cycle 23 we observed several strong ground level enhancements, one of the strongest among them been the Bastille day event on 14 July 2000. In the work presented here we apply a full Monte Carlo 3-D model in order to compute the cosmic ray induced ionization. The model is based on atmospheric shower simulation with the PLANETOCOSMICS code and the ion production rate is considered as a superposition of cosmic rays with galactic and solar origin. The ion production rate is computed as a function of the altitude above the sea level and the short, mid and long term ionization effect relative to the average due to galactic cosmic rays is computed.