Forschungszentrum Julich Gmbh

Forschungszentrum Juelich Gmbh

Ulrich Sieling

Stephan Appelt

Friedrich-Wolfgang Hasing

Friedrich Wolfgang Häsing

Giovanni D'Orsaneo

Wolfgang Häsing

Holger Kühn

Holger Kuhn

The invention concerns a method for hyperpolarizing lithium atoms in a mixture by optically pumping, in a sampling cell, atoms of a first type or alkali metal and by spin exchange between the optically pumped electron of the alkali metal and the lithium atom electron. The lithium atoms are preferably oxidized into Liions and accumulated. The nuclear spin polarization of the Liions can be transmitted to a nuclear spin of an anion. The invention also concerns a method for producing substances with nuclear spin polarization in general. In accordance with said method, lithium atoms are optically pumped from atoms of a first type of alkali metal in a sampling cell and hyperpolarized by spin exchange between the optical pumped electron of the alkali metal and the lithium atom electron, the lithium atoms being then oxidized into Liions. Then, the nuclear spin polarization of the Liions is transmitted to another nucleus of an anion. Thus it is possible to obtain hyperpolarized nuclei such as, for example,C,P orSi in solid or liquid phase, in large amounts and at high polarizing levels.

Hyperpolarization of lithium and other nuclei

The invention relates to a method and a device for examining molecules by means of NMR spectroscopy. It is the object of the invention to be able to characterize a sample with a high resolution and comprehensively. The object is solved by a method and an associated device for examining a sample by means of nuclear magnetic spectroscopy by measuring heteronuclear and homonuclear J-couplings in a small magnetic field and by using the measured heteronuclear and homonuclear J-couplings for characterizing the sample.

Method for molecule examination by NMR spectroscopy

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.

Method for the hyperpolarisation of atomic nuclei and device for implementing the method

Growing community of inventors

Düren, Germany

Ulrich Sieling