Fig. 2: Neutron diagnostics and discrimination.
From: Electrochemical loading enhances deuterium fusion rates in a metal target
a, The 3D distribution showing the neutron counting window (red). The red region shows the particles that are identified as neutrons, separate from the gamma-ray distribution. b, A sample slice of the 3D distribution taken at 195 keVee with a width of 15 keVee. The solid (black and red) lines are the mean (μγ and μn) of the gamma-ray (grey area) and neutron (red area) distributions, respectively, each with a standard deviationof σ. The dashed (red) line delineates the gamma-ray window, placed at μ + 5σ; more than 99.9999% of all gamma rays are contained in the region to the left of this line. Those particles found to the right of this line are classified as neutrons. c, The results of seven independent beam-loading experiments at −30 kV and 0.2 mA using different palladium targets show that neutron production rates are approximately the same 69.3(2) n s−1 after 120 min of reactor operation. a.u., arbitrary units.
