Cosmic Rays and the Interplanetary Magnetic Field

提出了一项基础广泛的宇宙射线及其与太阳磁场和太阳风相互作用的理论和观测研究计划。其中包括在1993年之前继续运作图勒和纽瓦克中子监测站，包括为探测器研制新的电子装置。具体任务将包括：(1)详细分析当前太阳活动周期中发生的太阳粒子事件，特别强调理解1989年观测到的显著精细结构。(2)太阳黑子周期（11年）和磁周期（22年）宇宙射线日径向梯度的变化。(3)太阳黑子周期和太阳磁周期变化的宇宙射线南北各向异性和径向梯度。(4)太阳和太阳风的长期变化和南北不对称性。(5)宇宙射线测量所揭示的行星际磁湍流的三维结构。(6)宇宙射线输运中的磁螺旋效应。(7)耗散型动态湍流中90度俯仰角附近的粒子散射。＊＊＊

A broad-based program of theoretical and observational research on cosmic rays and their interaction with the magnetic fields of the sun and the solar wind is proposed. Included will be the continued operation of the Thule and Newark neutron monitoring stations through 1993, including development of new electronic units for the detectors. Specific tasks will include: (1) detailed analysis of solar particle events occurring during the present solar cycle, with special emphasis placed on understanding the remarkable fine structure observed in 1989. (2) sunspot cycle (11 year) and magnetic cycle (22 year) variations of the cosmic ray diurnal radial gradient. (3) sunspot cycle and solar magnetic cycle variation of the cosmic ray north-south anisotropy and radial gradient. (4) long-term variations and north-south asymmetries of the sun and solar wind. (5) the three-dimensional structure of interplanetary magnetic turbulence, as revealed in cosmic ray measurements. (6) magnetic helicity effects in cosmic ray transport. (7) particle scattering near 90 degrees pitch angle during dissipative, dynamic turbulence. ***