Neutron production from Liâ·, Beâ¹, B/sup 10,11/, C¹², O¹â¶, F¹â¹, Mg/sup 24,25,26/, Al²â·, Ca/sup 40,44/, Cu, Sn/sup 116,124/, Ta¹â¸Â¹, and Pb nuclei at proton energies of 1 GeV