Solar modulation of cosmic deuteron fluxes in the PAMELA experiment

Koldobskiy, S. A; Adriani, O.; Bazilevskaya, G. A.; Barbarino, G. C.; Bellotti, Roberto; Bogomolov, E. A.; Boezio, M.; Bonvicini, V.; Bongi, M.; Bottai, S.; Bruno, Alessandro; Vacchi, A.; Vannuccini, E.; Vasilyev, G. I.; Voronov, S. A.; Galper, A. M.; De Santis, C.; Di Felice, V.; Zampa, G.; Zampa, N.; Casolino, M.; Campana, D.; Karelin, A. V.; Carlson, P.; Castellini, G.; Cafagna, F.; Kvashnin, A. A.; Kvashnin, A. N.; Koldashov, S. V.; Krutkov, S. Y.; Leonov, A. A.; Mayorov, A. G.; Malakhov, V. V.; Martucci, M.; Marcelli, L.; Menn, W.; Merge, M.; Mikhailov, V. V.; Mocchiutti, E.; Monaco, Alfonso; Mori, N.; Munini, R.; Osteria, G.; Panico, B.; Papini, P.; Picozza, P.; Pearce, M.; Ricci, M.; Ricciarini, S. B.; Runtso, M. F.; Simon, M.; Sparvoli, R.; Spillantini, P.; Stozhkov, Y. I.; Yurkin, Y. T.

doi:10.3103/S106287381702023X

The preliminary results from measurements of deuteron fluxes in galactic cosmic rays (GCR) in the vicinity of the Earth in 2006–2009 are presented. The results are obtained by analyzing data from the PAMELA experiment aboard the Resurs DK-1 satellite. High-precision detection instruments provided an opportunity to identify GCR deuterons and measure their spectrum in the energy interval of 90–650MeV/nucleon. Spectra averaged over six-month intervals from the summer of 2006 to the summer of 2009 (the solar activity minimum) are presented. The influence of solar modulation on the observed spectrum is clearly seen in the results.