Abstract: An apparatus for hyperpolarizing atomic nuclei through optical pumping has a cylindrical optical pumping cell having an inlet and an outlet spaced therefrom. A supply of a mixture of optically pumpable species and hyperpolarizable nuclei is connected to the inlet of the cell. A nozzle at an inlet of the optical pumping cell forms and injects a jet flow of the mixture into the optical pumping cell. It is then drawn out through the outlet such that the mixture touches the inner walls of the optical pumping cell only adjacent the outlet.

Abstract: The invention relates to a sample cell with a glass body comprising a gas inlet and a gas outlet and at least one orifice, a plane glass window is fused into the orifice, the shape and size of the window corresponds to the shape and size of the orifice, the orifice is limited by a rim, the rim is wider than the thickness of the window, the rim of the window is fused with the rim of the orifice. The invention further relates to a method of producing the sample cell. The window is inserted into the orifice. The rim of the orifice is heated several times from the exterior in such a way that the glass melts and a fused joint is formed between the window and the rim of the orifice. The sample cell produced by the method has a particularly rigid joint between the window and the glass body. Therefore, this glass cell is able to withstand pressures above 10 bar and allows the passage of light without lens effects owing to its plane-parallel windows. The sample cell is used in a polarizer for inert gas.

Abstract: The invention relates to a method for the hyperpolarisation of atomic nuclei by means of optical pumps in a sample cell. Polarisation of an electron spin of an optically pumpable species, which is produced by means of laser light, is transferred to the nucleus spin of an atom which is to be hyperpolarisied. According to the invention, components of the mixture and/or other inert compounds for hyperpolarisation are guided in the sample cell such that the mixture does not come into contact with the inner wall of the sample cell, or does to a small degree. A device for carrying out said method comprises at least one means which guides the components of the mixture of non-optical pumpable species and nuclei which are to be hyperpolarisied, and/or other inert compounds for hyperpolarisation, into the sample cell (5) such that the mixture does not come into contact with the inner wall of the sample cell (5), or does to small degree. As a result, the wall can be prevented from sagging.

Abstract: The invention relates to a method for determining phase distribution coefficients of substances for the solid/gas and liquid/gas compartments. According to the invention, a gas that has been pre-treated with active charcoal is fed through a housing (1), in which a sample has been provided. If the sample is a solid, the gas enters through openings in a shaft (11), which traverses the housing (1) and is equipped with propellers. If the sample is a liquid, the gas enters through a separate opening (8a, b, c) and the surface area of the liquid is increased by a rotating cylinder (9). The gas emerges from the housing (1) and traverses an adsorption tube, which is subjected to thermodesorption after the experiment. The substance released by said thermodesorption is subjected to a quantitative analysis.