Fig. 3: Measured signals.
From: Neutral beam microscopy with a reciprocal space approach using magnetic beam spin encoding
a Spin echo measurement performed by scanning the current (generating B1) for a fixed B2 value. The blue and orange arrows mark the currents used to measure the real (0°) and imaginary (90°) components of the signal. b and c \(S\left({k}_{x}\right)\) measurement for configurations A and B, respectively, after subtracting the constant signal level. The configurations are shown schematically in the inset plots. The red/magenta diagonal lines mark the overlap between the clear tube (white region) and the beam position in space (red/magenta circle), defining the shape of the beam going through. d \({\rho }_{{\rm {1D}}}\left(x\right)\) reconstructions for configurations A and B (red triangles, magenta stars) along with reference wire-scan measurements for each configuration, respectively (black/grey circles). All error bars were calculated from the standard deviation of repeat measurements.
