Patent Number: 
Section: claims

1. A polarized neutron guide capable of separating and transferring spin-up polarized neutrons and spin-down polarized neutrons from neutrons, the polarized neutron guide comprising:a body having a vacuum space formed therein through which neutrons are transferred, and including super mirrors disposed on a plane facing the vacuum space and coated with a neutron-reflective thin film;first and second spaces formed inside the body by the vacuum space partitioned by a first plate whose surfaces are coated with neutron-reflective thin films; anda neutron separation space formed by a second plate disposed at an entry of the first space, sloped to a front edge side of the first plate from an inner plane on one side of the body, and a third plate disposed at an entry of the second space, sloped to a front edge side of the first plate from an inner plane on the other side of the body,whereby spin-up polarized neutrons and spin-down polarized neutrons are simultaneously separated and transferred to the first and second spaces, respectively. 2. The polarized neutron guide of claim 1, wherein a portion of the body enclosing the first and second spaces and the first plate are coated with Ni/Ti in the form of a thin film, so that spin-up polarized neutrons or spin-down polarized neutrons are transferred therein. 3. The polarized neutron guide of claim 1, wherein a portion of the body enclosing the first space and the first plate are coated with FeCo/Si or Ni/Ti in the form of a thin film so that spin-up polarized neutrons are transferred therein, and a portion of the body enclosing the second space and the first plate are coated with Co/Cu or Ni/Ti in the form of a thin film so that spin-down polarized neutrons are transferred therein. 4. The polarized neutron guide of claim 1, wherein a portion of the body enclosing the first space and the first plate are coated with Co/Cu or Ni/Ti in the form of a thin film so that spin-down polarized neutrons are transferred therein, and a portion of the body enclosing the second space and the first plate are coated with FeCo/Si or Ni/Ti in the form of a thin film so that spin-up polarized neutrons are transferred therein. 5. The polarized neutron guide of claim 1, wherein for the first space to transfer spin-up polarized neutrons, the second plate mounted at the entry of the first space comprises polarizing-neutron super mirrors for transmitting spin-up polarized neutrons and reflecting spin-down polarized neutrons to the third plate of the second space, and for the second space to transfer spin-down polarized neutrons, the third plate mounted at the entry of the second space comprises polarizing-neutron super mirrors for transmitting spin-down polarized neutrons and reflecting spin-up polarized neutrons to the second plate of the first space. 6. The polarized neutron guide of claim 1, wherein for the first space to transfer spin-down polarized neutrons, the second plate mounted at the entry of the first space comprises polarizing-neutron super mirrors for transmitting spin-down polarized neutrons and reflecting spin-up polarized neutrons to the third plate of the second space, and for the second space to transfer spin-up polarized neutrons, the third plate mounted at the entry of the second space comprises polarizing-neutron super mirrors for transmitting spin-up polarized neutrons and reflecting spin-down polarized neutrons to the second plate of the first space. 7. A polarized neutron guide capable of separating and transferring spin-up polarized neutrons and spin-down polarized neutrons from neutrons, the polarized neutron guide comprising:a body having a vacuum space formed therein through which neutrons are transferred and including super mirrors disposed on a plane facing the vacuum space and coated with a neutron-reflective thin film;a first plate mounted inside the body to partition the vacuum space into first and second spaces, and having surfaces coated with neutron-reflective thin films;a second plate disposed at an entry of the first space, sloped to a front edge side of the first plate from an inner plane on one side of the body, and having a surface coated with a thin film for transmitting spin-up polarized neutrons; anda third plate disposed at an entry of the second space, sloped to a front edge side of the first plate from an inner plane on other side of the body, and having a surface coated with a thin film for transmitting spin-down polarized neutrons,whereby spin-up polarized neutrons and spin-down polarized neutrons are simultaneously separated and transferred to the first and second spaces, respectively. 8. The polarized neutron guide of claim 7, wherein a portion of the body enclosing the first and second spaces and the first plate are coated with Ni/Ti in the form of a thin film, so that spin-up polarized neutrons or spin-down polarized neutrons are transferred therein. 9. The polarized neutron guide of claim 7, wherein a portion of the body enclosing the first space and the first plate are coated with FeCo/Si or Ni/Ti in the form of a thin film so that spin-up polarized neutrons are transferred therein, and a portion of the body enclosing the second space and the first plate are coated with Co/Cu or Ni/Ti in the form of a thin film so that spin-down polarized neutrons are transferred therein. 10. The polarized neutron guide of claim 7, wherein a portion of the body enclosing the first space and the first plate are coated with Co/Cu or Ni/Ti in the form of a thin film so that spin-down polarized neutrons are transferred therein, and a portion of the body enclosing the second space and the first plate are coated with FeCo/Si or Ni/Ti in the form of a thin film so that spin-up polarized neutrons are transferred therein. 11. The polarized neutron guide of claim 7, wherein for the first space to transfer spin-up polarized neutrons, the second plate mounted at the entry of the first space comprises polarizing-neutron super mirrors for transmitting spin-up polarized neutrons and reflecting spin-down polarized neutrons to the third plate of the second space, and for the second space to transfer spin-down polarized neutrons, the third plate mounted at the entry of the second space comprises polarizing-neutron super mirrors for transmitting spin-down polarized neutrons and reflecting spin-up polarized neutrons to the second plate of the first space. 12. The polarized neutron guide of claim 7, wherein for the first space to transfer spin-down polarized neutrons, the second plate mounted at the entry of the first space comprises polarizing-neutron super mirrors for transmitting spin-down polarized neutrons and reflecting spin-up polarized neutrons to the third plate of the second space, and for the second space to transfer spin-up polarized neutrons, the third plate mounted at the entry of the second space comprises polarizing-neutron super mirrors for transmitting spin-up polarized neutrons and reflecting spin-down polarized neutrons to the second plate of the first space.