Extended Data Fig. 6: Quenching factor and background distribution.
From: Direct observation of the Migdal effect induced by neutron bombardment
a, The relationship between the QF of different nuclei in the working gas and their kinetic energy. b, comparison of measured and simulated background electron spectra. c, d, e, f, the differential cross section of QFEB (blue lines), SEB (red lines), AB (green lines), and NB (purple lines) induced by 2.5 MeV proton for different targets: 1H, 4He, 12C, and 18O. Meanwhile, we set θ = 90°, where θ is the angle of the emitted photon with respect to the proton.
