Universitat Ulm

Nvision Imaging Technologies Gmbh

Qiong Chen

Martin Bodo Plenio

Fedor Jelezko

Alex Retzker

Zhenyu Wang

The invention relates to a method for the hyperpolarization of a material sample (), which hits a number of first spin moments () of a first spin moment type, wherein the number of first spin moments () is brought into interaction with a second spin moment () of a second spin moment type, wherein the first spin moments () are nuclear spin moments and the second spin moment () is an election spin moment, wherein the first and second spin moments () are exposed to a homogeneous magnetic field (B), wherein the second spin moment () is polarized along the magnetic field (B), wherein the second spin moment () is coherently manipulated by means of a, preferably repeated, sequence (S) having a number of successive high-frequency pulses (P, P) temporally offset to each by durations (T, T, T), in such a way that a polarization transfer from the second spin moment () to the first spin moments () occurs, and wherein durations (T, T, T) inversely proportional to a Lamor frequency (&#x3c9;) of the first spin moments () in the magnetic field (B) are inserted between high-frequency pulses (P, P).

Method and device for the hyperpolarization of a material sample

A method of hyperpolarisation of nuclear spins in one or more particle(s) moving relatively to a polarisation structure, wherein a polarisation of electron spins in the polarisation structure is transferred to the nuclear spins in the particle(s), wherein for one or more of the moving particle(s) within 20 nm from a surface of the polarisation structure, the correlation time of the interaction with the nearest polarisation structure electron spin due to the molecular motion is larger than the inverse of the nuclear Larmor frequency; the electron spins in the polarisation structure are polarised above thermal equilibrium; and the polarisation transfer is performed resonantly.

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Neu-Ulm, Germany

Qiong Chen