Enhanced fluorescence from x-ray line coincidence pumping of K-pumped Cl and Mg-pumped Ge plasmas by Nilsen, J, Burridge, D, Hobbs, LMR, Hoarty, D, Beiersdorfer, P, Brown, GV, Hell, N, Panchenko, D, Gu, MF, Saunders, AM, Scott, HA, London, RA, Hatfield, P, Hill, MP, Wilson, L, Charles, R, Brown, CRD, Rose, S