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Abstract #1186

Hyperpolarization of 129Xe gas via dissolution DNP: beneficial tips and tricks

Emma Linnea Wiström1, Andrea Capozzi1, Thanh Phong Lê1, Rolf Gruetter1, and Jean-Noël Hyacinthe2
1LIFMET, École polytechnique fédérale de Lausanne, Lausanne, Switzerland, 2Geneva School of Health Sciences (HES-SO), University of Applied Sciences and Arts Western Switzerland, Geneva, Switzerland


Dissolution DNP (dDNP) is an alternative for hyperpolarizing 129Xe to the well acknowledged method spin exchange optical pumping (SEOP). As opposed to SEOP, DNP takes place in the solid state at very low temperatures. Therefore, it can potentially produce a large volume of hyperpolarized gas after dissolution. In this study, by implementing a new way of preparing the sample, we ease the overall process and establish a superior incorporation of the gas atoms into the solvent. Additionally, due to a surprisingly short radical electron T1, we show that a higher polarization was achieved by applying microwave frequency modulation.

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