摘要
用超导量子干涉（ＳＱＵＩＤ）二次梯度磁力计探测转动物体的伴生磁矩，转动物体为２０ｋｇ重的纯铜圆柱形转子，用空气静压轴承浮起，气马达驱动。实验观察到磁力计读数和转子转达之间具有相关性。此相关性是否就是动量矩伴生磁矩效应，有待于进一步实验证实。本文着重讨论非屏蔽条件下测量的信噪比并提出改善信噪比的措施。
Accompanying a cylindrical rotor,a twice gradient SQUID magnetometer was used to detect the magnetic moment. The rotor, which was made of pure copper weighting 20 kg, was floated by gass-pressure bearing and drived by a gas motor. A relation between the magnetometer's readings and the speed of the rotor was observed. Whether this relation was the effect of magnetic movement accompanying the angular momentum or not required further experiments. This paper mainly discussed the signal-noise ratio in a no shielding condition and provided same methods of improving signal-noise ratio.
出处
《江西科学》
1994年第4期208-214,共7页
Jiangxi Science
基金
国家自然科学基金
关键词
气浮转子
伴生磁矩
磁力计
转动物体
磁性
Gas-floatage rotor
Magnetic moment accompanying the angular momentum
SQUID magnetometer
