COORDINATES FOR MAPPING THE DISTRIBUTION OF MAGNETICALLY TRAPPED PARTICLES
COORDINATES FOR MAPPING THE DISTRIBUTION OF MAGNETICALLY TRAPPED PARTICLES
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发表时间：
1961-11
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通讯作者：
Mc Ilwain
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作者：
Mc Ilwain
已经发现地球磁场的偶极表示对于磁捕获粒子的研究具有不足的准确性。已经发现，由磁场B的大小和积分不变量I组成的坐标系能够充分地组织在不同地理位置处进行的测量。本文指出，可以定义一个参数L = f（B，I），它保留了I的大部分理想性质，并具有沿沿着力线组织测量的附加性质。由于参数L是偶极场中的物理距离（磁壳的等径半径）的模拟，通常发现它比积分不变量i在概念上更容易理解。
Dipole representations of the earth's magnetic field have been found to have insufficient accuracy for the study of magnetically trapped particles. A coordinate system consisting of the magnitude of the magnetic field B, and the integral invariant I has been found to adequately organize, measurements made at different geographic locations. It is shown in the present paper, that a parameter L = f(B,I) can be defined which retains most of the desirable properties of I and which has the additional property of organizing measurements along lines of force. Since the parameter L is the analog of a physical distance in a dipole field (the equaborial radius of a magnetic shell), it is usually found to present fewer conceptual difficulties than the integral invariant i.