Fig.12-14 Principle of operation of the neutron spin filter and the experimental setup
(a) Nuclear-spin-polarized 3He gas selectively removes neutrons with opposite spin states and transmits unaffected neutrons with the same spin.
(b) Inside the SEOP NSF system: A 3He gas cell, laser optics, and a solenoid coil are mounted together.
(c) Experimental setup: 3He polarization was determined by measuring the neutron transmission at the gas cell.
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