Jau Yuan-Yu, Hussey Daniel S, Gentile Thomas R, Chen Wangchun
Sandia National Laboratories, Albuquerque, New Mexico 87123, USA.
National Institute of Standards and Technology (NIST), Gaithersburg, Maryland 20899, USA.
Phys Rev Lett. 2020 Sep 11;125(11):110801. doi: 10.1103/PhysRevLett.125.110801.
We experimentally demonstrate that electrically neutral particles, neutrons, can be used to directly visualize the electrostatic field inside a target volume that can be physically isolated or occupied. Electric field images are obtained using a spin-polarized neutron beam with a recently developed polarimetry method for polychromatic beams that permits detection of a small angular change in spin orientation. This Letter may enable a new diagnostic technique sensitive to the structure of electric potential, electric polarization, charge distribution, and dielectric constant by imaging spatially dependent electric fields in objects that cannot be accessed by other probes.
我们通过实验证明，电中性粒子——中子，可用于直接可视化目标体积内的静电场，该目标体积可以是物理隔离的或被占据的。利用自旋极化中子束和最近开发的用于多色束的极化测量方法获得电场图像，该方法允许检测自旋取向的小角度变化。这封信可能会促成一种新的诊断技术，通过对其他探测器无法触及的物体中的空间相关电场进行成像，来探测对电势结构、电极化、电荷分布和介电常数敏感的信息。
