| 单词 | Magnetogyric ratio |
| 释义 |
Magnetogyric ratio
中文百科
旋磁比 Gyromagnetic ratio（重定向自Magnetogyric ratio）
在物理学中，旋磁比（英语：gyromagnetic ratio，也称为磁旋比，magnetogyric ratio，常用
英语百科
Gyromagnetic ratio 旋磁比（重定向自Magnetogyric ratio）
![The sign of the gyromagnetic ratio, γ, determines the sense of precession. Nuclei such as 1H and 13C are said to have clockwise precession, whereas 15N has counterclockwise precession.[7][8] While the magnetic moments shown here are oriented the same for both cases of γ, the spin angular momentum are in opposite directions. Spin and magnetic moment are in the same direction for γ > 0.](/uploads/202501/25/Gyromagnetic_Nuclei_Precession1433.png) In physics, the gyromagnetic ratio (also sometimes known as the magnetogyric ratio in other disciplines) of a particle or system is the ratio of its magnetic dipole moment to its angular momentum, and it is often denoted by the symbol γ, gamma. Its SI unit is the radian per second per tesla (rad⋅s⋅T) or, equivalently, the coulomb per kilogram (C⋅kg). |
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表示）定义为一个自旋不为零的粒子（此时下文中的磁矩与角动量指自旋磁矩和自旋角动量）或一个体系的磁矩与角动量之比（因而称磁旋比），对于前一种情况，也等于粒子在外磁场作用下，磁矩作拉莫尔进动时的角频率与外加磁场的磁感应强度之比（因而称旋磁比）。在磁共振领域中广泛用到此概念。