Snow W M, Anderson E, Barrón-Palos L, Bass C D, Bass T D, Crawford B E, Crawford C, Dawkins J M, Esposito D, Fry J, Gardiner H, Gan K, Haddock C, Heckel B R, Holley A T, Horton J C, Huffer C, Lieffers J, Luo D, Maldonado-Velázquez M, Markoff D M, Micherdzinska A M, Mumm H P, Nico J S, Sarsour M, Santra S, Sharapov E I, Swanson H E, Walbridge S B, Zhumabekova V
Indiana University and Center for the Exploration of Energy and Matter, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408, USA.
Instituto de Física, Universidad Nacional Autónoma de México, Ciudad de México, D.F. 04510, México.
Rev Sci Instrum. 2015 May;86(5):055101. doi: 10.1063/1.4919412.
We present the design, description, calibration procedure, and an analysis of systematic effects for an apparatus designed to measure the rotation of the plane of polarization of a transversely polarized slow neutron beam as it passes through unpolarized matter. This device is the neutron optical equivalent of a crossed polarizer/analyzer pair familiar from light optics. This apparatus has been used to search for parity violation in the interaction of polarized slow neutrons in matter. Given the brightness of existing slow neutron sources, this apparatus is capable of measuring a neutron rotary power of dϕ/dz = 1 × 10(-7) rad/m.
我们介绍了一种用于测量横向极化慢中子束在穿过非极化物质时偏振面旋转的装置的设计、描述、校准程序以及系统效应分析。该装置在中子光学中相当于光光学中常见的交叉偏振器/分析器对。此装置已用于探寻极化慢中子在物质中相互作用时的宇称破坏。鉴于现有慢中子源的亮度，该装置能够测量dϕ/dz = 1×10^(-7) 弧度/米的中子旋光本领。
