11. In experiments with polarized thermal neutrons , Lobashev demonstrated left-right asymmetry of fission neutron capture. 12. Since neutrons are neutral particles, they do not have to overcome cold or thermal neutrons . 13. The HB-1 and HB-3 thermal neutron beam tube designs are identical except for the length. 14. Only the odd-mass isotopes of plutonium are fissile with thermal neutrons , and the even-mass isotopes accumulate. 15. Thermal neutrons are produced that collide with the nuclei of nitrogen-14, forming carbon-14 and a proton.16. A typical reactor used for activation uses uranium eV . These neutrons are termed thermal neutrons . 17. Thermal neutrons are cosmic-ray-generated neutrons which have lost much of their energy in collisions with hydrogen atoms.18. Gadolinium-157 has the highest thermal neutron barns. 19. A thermal neutron is one which is moving about the same speed as the atoms around it. 20. Several neutron scattering techniques have been developed to use thermal neutrons to characterize magnetic micro and nanostructures.
