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Helium Fluxes Measured by the PAMELA Experiment from the Minimum to the Maximum Solar Activity for Solar Cycle 24

  • Authors: N. Marcelli, M. Boezio, A. Lenni, W. Menn, R. Munini, O.P. M. Aslam, D. Bisschoff, M.D. Ngobeni, M.S. Potgieter, O. Adriani, G.C. Barbarino, G.A. Bazilevskaya, R. Bellotti, E.A. Bogomolov, M. Bongi, V. Bonvicini, A. Bruno, F. Cafagna, D. Campana, P. Carlson, M. Casolino, G. Castellini, C. De Santis, A.M. Galper, S.V. Koldashov, S. Koldobskiy, A.N. Kvashnin, A.A. Leonov, V.V. Malakhov, L. Marcelli, M. Martucci, A.G. Mayorov, M. Mergè, E. Mocchiutti, A. Monaco, N. Mori, V.V. Mikhailov, G. Osteria, B. Panico, P. Papini, M. Pearce, P. Picozza, M. Ricci, S.B. Ricciarini, M. Simon, A. Sotgiu, R. Sparvoli, P. Spillantini, Y.I. Stozhkov, A. Vacchi, E. Vannuccini, G.I. Vasilyev, S.A. Voronov, Y.T. Yurkin, G. Zampa, and N. Zampa

2022 The Astrophysical Journal Letters 925 L24.

  • Provider: AAS Journals

Caption: Figure 5.

Proton (top set of lines) and helium-nuclei (lower lines) fluxes (J) measured by the PAMELA experiment from 2006 June (violet) to 2014 September (red) divided by rigidity squared vs. kinetic energy divided by the charge (Ze). The displacements along the abscissa are similar between the two species and they are attributed to the varying with time of the solar modulation parameter.

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