中国激光, 2017, 44 (10): 1004001, 网络出版: 2017-10-18
用于零场核磁共振探测的无自旋交换弛豫原子磁力仪 下载: 1434次
Spin-Exchange Relaxation Free Atomic Magnetometer for Zero-Field Nuclear Magnetic Resonance Detection
测量 原子磁力仪 无自旋交换弛豫 灵敏度 零场核磁共振 measurement atomic magnetometer spin-exchange relaxation free sensitivity zero-field nuclear magnetic resonance
摘要
研制了用于液体零场核磁共振探测的无自旋交换弛豫(SERF)铷原子磁力仪。通过实验测量原子的磁共振曲线, 验证了磁力仪工作在SERF状态, 且结果与理论相符。采用增加光强的方法提高磁力仪带宽, 满足了液体零场核磁共振的带宽需求, 磁力仪在20~300 Hz 频率范围内的灵敏度低于18 fT/Hz1/2。用基于磁力仪研制的液体零场核磁共振装置对甲酸样品进行测量, 得到了13C标记的甲酸的零场核磁共振谱, 验证了磁力仪的可用性。
Abstract
A spin-exchange relaxation free (SERF) rubidium atom magnetometer is developed for liquid-state zero-field nuclear magnetic resonance detection. The magnetic resonance curve of the atom is measured by the experiment. It is verified that the magnetometer is working at the status of SERF, and the result is consistent with the theory. Using the method of increasing the intensity of light, the bandwidth of the magnetometer is improved, and the bandwidth demand of the liquid zero field nuclear magnetic resonance is met. The sensitivity of the magnetometer in the frequency range of 20~300 Hz is lower than 18 fT/Hz1/2. A liquid-status zero-filed nuclear magnetic resonance device based on magnetometer is used to measure the the sample of formic acid, and zero-filed nuclear magnetic resonance spectra of formic acid marked by 13C is got. Which verifies the usability of magnetometer.
陈伯韬, 江敏, 季云兰, 边纪, 徐文杰, 张晗, 彭新华. 用于零场核磁共振探测的无自旋交换弛豫原子磁力仪[J]. 中国激光, 2017, 44(10): 1004001. Chen Botao, Jiang Min, Ji Yunlan, Bian Ji, Xu Wenjie, Zhang Han, Peng Xinhu. Spin-Exchange Relaxation Free Atomic Magnetometer for Zero-Field Nuclear Magnetic Resonance Detection[J]. Chinese Journal of Lasers, 2017, 44(10): 1004001.