Mainz 2017 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 23: Trapped ions
A 23.2: Vortrag
Mittwoch, 8. März 2017, 15:00–15:15, N 3
Nuclear magnetic resonance signal detection for the Cosmic Axion Spin Precession Experiment (CASPEr-Wind) — •Gary Centers1, John Blanchard1, Nataniel Figueroa1, Marina Gil Sendra1, Arne Wickenbrock1, Dmitry Budker1, Antoine Garcon1, and CASPEr Collaboration2 — 1Helmholtz Institute Mainz, Johannes Gutenberg University, 55128 Mainz, Germany — 2Various locations
The Cosmic Axion Spin Precession Experiment (CASPEr), particularly the CASPEr-Wind, is a detection scheme searching for light particles that have a coupling to nuclear spin; some examples being dark matter candidates like the axion/axion-like particles, hidden photons, or any pseudo-Goldstone boson. The coupling induces precession of the nuclear spin about the axion momentum which will be detected using Nuclear Magnetic Resonance (NMR) techniques.
Using a sample of hyperpolarized liquid xenon to monitor the transverse magnetization is different from the application of short radio-frequency pulses typical in NMR. From this perspective, an analysis for detecting the wind-induced NMR signal is presented using transient, steady state, and closed form solutions of the Bloch equations in different limits. Considerations will include, but are not limited to, different schemes of varying the leading field, effects of radiation damping, different relaxation limits, and noise considerations.