极化3He系统核磁共振FID信号的激光探测
Laser Detection of Nuclear Magnetic Resonance FID Signal for Polarized 3He System
极化3He系统核磁共振FID信号的激光探测 |
| 王昶沣,兰阳,闫海洋,彭梅,陈思宇 |
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Laser Detection of Nuclear Magnetic Resonance FID Signal for Polarized 3He System |
| Chang-feng WANG,Yang LAN,Hai-yang YAN,Mei PENG,Si-yu CHEN |
| 图1 激光探测方法示意图. (a) 3He极化后的自旋方向朝向主磁场方向；(b)在垂直于主磁场方向施加一射频场使3He偏离主磁场一个较小的角度；(c) 3He自旋弛豫过程；(d)极化3He恢复到初始状态 |
| Fig.1 Illustration of the laser detection method. (a) The polarized 3He has spin aligned to the direction of the main magnetic field; (b) An radiofrequency electromagnetic field is applied in a direction perpendicular to the main magnetic field to tip the spin of the 3He a small angle away from the main magnetic field; (c) The process of 3He spin relaxation; (d) The polarized 3He is back to its original status |
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