Enhanced fluorescence from x-ray line coincidence pumping of K-pumped Cl and Mg-pumped Ge plasmas - Nilsen, J; Burridge, D; Hobbs, LMR; Hoarty, D; Beiersdorfer, P; Brown, GV; Hell, N; Panchenko, D; Gu, MF; Saunders, AM; Scott, HA; London, RA; et al. (SPIE, 2019)