Figure 4

Stabilities of the i-exposure betatron X-ray sources. (a) 26 3-exposure spectra (blue solid lines) and their average spectrum (orange solid line). (b) 5 16-exposure spectra and their average spectrum (orange solid line). (c) Experimentally measured \({{\rm{\Lambda }}}_{{\theta }_{x}}\) (yellow solid line), \({{\rm{\Lambda }}}_{{\theta }_{y}}\) (yellow dashed line) and Λph (red solid line) of i-exposure X-rays, and estimated Δph (purple dashed line) of i-exposure X-rays. (d) Experimentally measured ΛS of i-exposure X-rays.