Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

A: Fachverband Atomphysik

A 6: Atomic Systems in External Fields I

A 6.2: Vortrag

Montag, 11. März 2024, 17:15–17:30, HS 1098

A universal method to polarize beams and samples — •Nicolas Faatz^1,2,3, Tarek El-Kordy^1,2,4, Christoph Hanhart^2,5, Chrysovalantis Kannis⁶, Lukas Kunkel^1,2,3, Simon Pütz^1,2, Harsh Sharma^1,2,4, Vincent Verhoeven^1,2, Jan Wirtz^1,2,3, and Markus Büscher^6,7 — ¹GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany — ²Institut für Kernphysik, Forschungszentrum Jülich, Jülich, Germany — ³III. Physikalisches Institut B, RWTH Aachen University, Aachen, Germany — ⁴FH Aachen, Campus Jülich, Jülich, Germany — ⁵Institute for Advanced Simulation 4, Forschungszentrum Jülich, Jülich, Germany — ⁶Institut für Laser- und Plasma-Physik, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany — ⁷Peter-Grünberg-Institut 6, Forschungszentrum Jülich, Jülich, Germany

In various applications a high nuclear polarisation, ideally a total alignment of all spins, is favourable, e.g. for sources and targets for fundamental research. The hereby presented method provides an inexpensive, fast, versatile and effective solution to produce highly polarised materials in reasonable amounts based on radio-wave pumping of hyperfine states and quantum interference effects. This method is theoretically understood and was experimentally proven for beams of metastable hydrogen atoms in the keV energy range. Thus, this technique opens the door for new applications as polarised tracers or even low-field MRI with even better spatial resolution in medicine or the production of polarised fuel to increase the energy output.

Keywords: polarisation; beam; sample; magnetic fields; hyperfine