A high-volume resonator for L-band DNP-NMR.

DNP-NMR and EPR experiments that operate at or greater than L-band (i.e., ν(e) = 1-2 GHz) are typically limited to maximum sample volumes of several hundred µL.

High-resolution ultra-low field magnetic resonance imaging with a high-sensitivity sensing coil.

We present high-resolution magnetic resonance imaging (MRI) at ultra-low field (ULF) with a proton Larmor frequency of around 120 kHz. The key element is a specially designed high-sensitivity sensing coil in the shape of a solenoid with a few millimeter gap between windings to decrease the proximity effect and, hence, increase the coil's quality ( ) factor and sensitivity. External noise is strongly suppressed by enclosing the sensing coil in a copper cylindrical shield, large enough not to negatively affect the coil's factor and sensitivity, measured to be 217 and 0.

Experimental limit on an exotic parity-odd spin- and velocity-dependent interaction using an optically polarized vapor.

Exotic spin-dependent interactions between fermions have recently attracted attention in relation to theories beyond the Standard Model. The exotic interactions can be mediated by hypothetical fundamental bosons which may explain several unsolved mysteries in physics. Here we expand this area of research by probing an exotic parity-odd spin- and velocity-dependent interaction between the axial-vector electron coupling and the vector nucleon coupling for polarized electrons.