Negative pion and muon fluxes in atmospheric cascades at a depth of 5 g

Autor:	S.A. Stephens, R. E. Streitmatter, Jonathan F. Ormes, P. Picozza, F. Bongiorno, B. L. Kimbell, P. Spillantini, I. Salvatori, F. Massimo Brancaccio, Mauro Menichelli, M. P. De Pascale, P. Papini, A. Morselli, W. R. Webber, Marco Ricci, S. J. Stochaj, G. Basini, Antonio Codino, M. Miozza, Maria Teresa Brunetti, Catia Grimani, S. Piccardi, R. L. Golden
Rok vydání:	1996
Předmět:	Physics Nuclear and High Energy Physics Momentum (technical analysis) Particle physics Spectral index Muon Spectrometer Astrophysics::High Energy Astrophysical Phenomena Nuclear physics Pion Altitude Earth's magnetic field Antimatter High Energy Physics::Experiment Nuclear Experiment
Zdroj:	Journal of Physics G: Nuclear and Particle Physics. 22:145-153
ISSN:	1361-6471 0954-3899
Popis:	This paper reports observations of the absolute momentum differential fluxes of negative pions and muons between 4 and 15 GeV/c and between 0.3 and 15 GeV/c, respectively, at an atmospheric depth of 5 g . The data have been collected by the balloon-borne experiment MASS (matter - antimatter space spectrometer) launched from Prince Albert (Canada) where the geomagnetic cut-off is 650 MV/c. The instrument was flown on the 5th of September 1989, the duration of the flight was 5.5 hours at an altitude of more than 117 000 ft. The measured fluxes are compared to calculations. The muon spectrum follows a power law in momentum with a spectral index of 2.36 above 2 GeV/c.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::16e2888ee2fd158ddad3cdf862f35fdd https://doi.org/10.1088/0954-3899/22/1/014 Zobrazit plný text záznamu