Publications [#248819] of Christopher Walter

Papers Published
  1. Ambrosio, M; Antolini, R; Auriemma, G; Baker, R; Baldini, A; Barbarino, GC; Barish, BC; Battistoni, G; Bellotti, R; Bemporad, C; Bernardini, P; Bilokon, H; Bisi, V; Bloise, C; Bosio, T; Bower, C; Bussino, S; Cafagna, F; Calicchio, M; Campana, D; Carboni, M; Castellano, M; Cecchini, S; Cei, F; Chiarella, V; Corona, A; Coutu, S; Cataldo, GD; Dekhissi, H; Marzo, CD; Mitri, ID; Vincenzi, MD; Credico, AD; Erriquez, O; Fantini, R; Favuzzi, C; Forti, C; Fusco, P; Giacomelli, G; Giannini, G et al., High energy cosmic ray physics with underground muons in MACRO. II. Primary spectra and composition, Physical Review D: Particles, Fields, Gravitation and Cosmology, vol. 56 no. 3 (1997), pp. 1418-1436 .

    Abstract:
    Multimuon data from the MACRO experiment at Gran Sasso have been analyzed using a new method, which allows one to estimate the primary cosmic ray fluxes. The estimated all-particle spectrum is higher and flatter than the one obtained from direct measurements but is consistent with EAS array measurements. The spectral indexes of the fitted energy spectrum are 2.56±0.05 for E<500 TeV and 2.9±0.3 for E>5000 TeV with a gradual change at intermediate energies. The average mass number shows little dependence on the primary energy below 1000 TeV, with a value of 10.1±2.5 at 100 TeV. At higher energies the best fit average mass shows a mild increase with energy, even though no definite conclusion can be reached taking into account errors. The fitted spectra cover a range from ∼ 50 TeV up to several thousand TeV.