太阳高能粒子的电荷态和粒子强度间的相关性

CHARGE STATES OF SOLAR ENERGETIC PARTICLES AND CORRELATIONS BETWEEN PARTICLE INTENSITIES

本文发表了在太阳高能粒子事件中,元素氦、碳、氮、氧、氖、镁、硅、硫和铁的离子电荷态的分布。研究结果表明,除氦之外上述元素的电荷态分布的不同离子价的数目是随元素的质量而增大。核子能量在2—3 MeV范围内,这些元素的平均粒子强度相对于碳的平均粒子强度之间的相关性能够用离子价的数目随元素质量的增加来解释,而不能用日冕温度确定的电荷态平衡模型来解释。且得出结论,太阳高能粒子的离子电荷是在太阳耀斑区而不是在星际激波区产生。

A possible ionic charge state distributions of He, C, N, O, Ne, Mg, Si, S and Fe in solar energetic particle events is presented in this paper. The number of different ionic orders in the distributions of elements increases with the elemental mass except for He. The correlations between the mean particle intensities for the elements as a function of mean intensities of C in the energy range 2-3 MeV per nucleon can be explainel in terms of the increase of ionic-order number with mass for the elements. The ionic charge states cannot be explained in a model in which the coronal temperature determines a charge equilibrium. It is concluded that ionic charges of solar energtic particles can be produced in a solar flaring region rather than in an interplanetary shock region.