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Measurement of the isotopic composition of hydrogen and helium nuclei in cosmic rays with the PAMELA experiment

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arxiv 1304.5420 v1 pith:I7ZSSE32 submitted 2013-04-19 astro-ph.HE

Measurement of the isotopic composition of hydrogen and helium nuclei in cosmic rays with the PAMELA experiment

O. Adriani , G. C. Barbarino , G. A. Bazilevskaya , R. Bellotti , M. Boezio , E. A. Bogomolov , M. Bongi , V. Bonvicini
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S. Borisov S. Bottai A. Bruno F. Cafagna D. Campana R. Carbone P. Carlson M. Casolino G. Castellini I. A. Danilchenko M. P. De Pascale C. De Santis N. De Simone V. Di Felice V. Formato A. M. Galper A. V. Karelin S. V. Koldashov S. Koldobskiy S. Y. Krutkov A. N. Kvashnin A. Leonov V. Malakhov L. Marcelli A. G. Mayorov W. Menn V. V. Mikhailov E. Mocchiutti A. Monaco N. Mori N. Nikonov G. Osteria F. Palma P. Papini M. Pearce P. Picozza C. Pizzolotto M. Ricci S. B. Ricciarini L. Rossetto R. Sarkar M. Simon R. Sparvoli P. Spillantini Y. I. Stozhkov A. Vacchi E. Vannuccini G. Vasilyev S. A. Voronov Y. T. Yurkin J. Wu G. Zampa N. Zampa V. G. Zverev
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keywords cosmiccompositionexperimentheliumhydrogenisotopesisotopicmeasurements
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The satellite-borne experiment PAMELA has been used to make new measurements of cosmic ray H and He isotopes. The isotopic composition was measured between 100 and 600 MeV/n for hydrogen and between 100 and 900 MeV/n for helium isotopes over the 23rd solar minimum from July 2006 to December 2007. The energy spectrum of these components carries fundamental information regarding the propagation of cosmic rays in the galaxy which are competitive with those obtained from other secondary to primary measurements such as B/C.

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