arXiv:astro-ph/0010652v1 31 Oct 2000 Measurement of the Cosmic Ray Energy Spectrum and Composition from 10 17 to 10 18.3 eV Using a Hybrid Fluorescence Technique T.Abu-Zayyad 1 , K.Belov 1 , D.J.Bird 5 , J.Boyer 4 , Z.Cao 1 , M.Catanese 3 , G.F.Chen 1 , R.W.Clay 5 , C.E.Covault 2 , H.Y.Dai 1 , B.R.Dawson 5 , J.W.Elbert 1 , B.E.Fick 2 , L.F.Fortson 2a , J.W.Fowler 2 , K.G.Gibbs 2 , M.A.K.Glasmacher 7 , K.D.Green 2 , Y.Ho 10 , A.Huang 1 , C.C.Jui 1 , M.J.Kidd 6 , D.B.Kieda 1 , B.C.Knapp 4 , S.Ko 1 , C.G.Larsen 1 , W.Lee 10 , E.C.Loh 1 , E.J.Mannel 4 , J.Matthews 9 , J.N.Matthews 1 , B.J.Newport 2 , D.F.Nitz 8 , R.A.Ong 2 , K.M.Simpson 5 , J.D.Smith 1 , D.Sinclair 6 , P.Sokolsky 1 , P.Sommers 1 , C.Song 10 , J.K.K.Tang 1 , S.B.Thomas 1 , J.C.van der Velde 7 , L.R.Wiencke 1 , C.R.Wilkinson 5 , S.Yoshida 1 and X.Z.Zhang 10 1 High Energy Astrophysics Institute, University of Utah, Salt Lake City UT 8 4112 USA 2 Enrico Fermi Institute, University of Chicago, Chicago IL 60637 USA 3 Smithsonian Astrophys. Obs., Cambridge MA 02138 USA 4 Nevis Laboratory, Columbia University, Irvington NY 10533 USA 5 University of Adelaide, Adelaide S.A. 5005 Australia 6 University of Illinois at Champaign-Urbana, Urbana IL 61801 USA 7 University of Michigan, Ann Arbor MI 48109 USA 8 Dept. of Physics, Michigan Technological University,