Spin-dependent scattering and absorption of thermal neutrons on dynamically polarized nuclei

Dynamic nuclear polarization and the spin-temperature concept of nuclear Zeeman reservoirs are systematically used to obtain spin-dependent scattering lengths bsub(N) of separate isotopes in the same target. A simple generalization shows the way to measure bsub(N) for nuclei invisible by nuclear magnetic resonance. It shows also how to obtain precise ratios of bsub(N) for different isotopes or of spin-dependent absorption and scattering of the same isotope. Values of bsub(N) are given for 13C, 35Cl, 79Br, 81Br as well as upper limits for 31P, 37Cl and 41K