Yashchuk V V, Granwehr J, Kimball D F, Rochester S M, Trabesinger A H, Urban J T, Budker D, Pines A
Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA.
Phys Rev Lett. 2004 Oct 15;93(16):160801. doi: 10.1103/PhysRevLett.93.160801. Epub 2004 Oct 11.
We report the use of an atomic magnetometer based on nonlinear magneto-optical rotation with frequency-modulated light to detect nuclear magnetization of xenon gas. The magnetization of a spin-exchange-polarized xenon sample (1.7 c m(3) at a pressure of 5 bars, natural isotopic abundance, polarization 1% ), prepared remotely to the detection apparatus, is measured with an atomic sensor. An average magnetic field of approximately 10 nG induced by the xenon sample on the 10 cm diameter atomic sensor is detected with signal-to-noise ratio approximately 10 , limited by residual noise in the magnetic environment. The possibility of using modern atomic magnetometers as detectors of nuclear magnetic resonance and in magnetic resonance imaging is discussed. Atomic magnetometers appear to be ideally suited for emerging low-field and remote-detection magnetic resonance applications.
我们报告了一种基于非线性磁光旋转和调频光的原子磁力计用于检测氙气核磁化强度的情况。在远离检测装置的地方制备了一个自旋交换极化的氙气样本（体积为1.7立方厘米，压力为5巴，天然同位素丰度，极化率为1%），并用原子传感器测量其磁化强度。氙气样本在直径为10厘米的原子传感器上感应出的平均磁场约为10纳高斯，信号噪声比约为10，受磁环境中的残余噪声限制。讨论了使用现代原子磁力计作为核磁共振探测器以及用于磁共振成像的可能性。原子磁力计似乎非常适合新兴的低场和远程检测磁共振应用。
