The absolute flux of protons and helium at the top of the atmosphere using IMAX

W. Menn, M. Hof, O. Reimer, M. Simon, A.J. Davis, A.E. Labrador, R.A. Mewaldt, S.M. Schindler, L.M. Barbier, E.R. Christian, K.E. Krombel, J.F. Krizmanic, J.W. Mitchell, J.F. Ormes, R.E. Streitmatter, R.L. Golden, S.J. Stochaj, W.R. Webber, Ib Lundgaard Rasmussen