Proton and Helium Spectra from the CREAM-III Flight

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ID: 268699
2017
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Abstract
Primary cosmic-ray elemental spectra have been measured with the balloon-borne Cosmic Ray Energetics And Mass (CREAM) experiment since 2004. The third CREAM payload (CREAM-III) flew for 29 days during the 2007–2008 Antarctic season. Energies of incident particles above 1 TeV are measured with a calorimeter. Individual elements are clearly separated with a charge resolution of ~0.12 e (in charge units) and ~0.14 e for protons and helium nuclei, respectively, using two layers of silicon charge detectors. The measured proton and helium energy spectra at the top of the atmosphere are harder than other existing measurements at a few tens of GeV. The relative abundance of protons to helium nuclei is 9.53 ± 0.03 for the range of 1 TeV/n to 63 TeV/n. This ratio is considerably smaller than other measurements at a few tens of GeV/n. The spectra become softer above ~20 TeV. However, our statistical uncertainties are large at these energies and more data are needed.
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wu2017theproton Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Y. S. Yoon,T. Anderson,A. Barrau,N. B. Conklin,Stephane Coutu,L. Derome,J. H. Han,J. A. Jeon,K. C. Kim,M. H. Kim,H. Y. Lee,J. Lee,Moo Hyun Lee,S. E. Lee,J. T. Link,A. Menchaca-Rocha,J. W. Mitchell,S. I. Mognet,S. Nutter,I. H. Park,N. Picot-Clemente,A. Putze,E. S. Seo,J. Smith,J. Wu;Y. S. Yoon;T. Anderson;A. Barrau;N. B. Conklin;Stephane Coutu;L. Derome;J. H. Han;J. A. Jeon;K. C. Kim;M. H. Kim;H. Y. Lee;J. Lee;Moo Hyun Lee;S. E. Lee;J. T. Link;A. Menchaca-Rocha;J. W. Mitchell;S. I. Mognet;S. Nutter;I. H. Park;N. Picot-Clemente;A. Putze;E. S. Seo;J. Smith;J. Wu;
Journal the astrophysical journal
Year 2017
DOI
10.3847/1538-4357/aa68e4
URL
https://sciprofiles.com/publication/view/9e2e27ce4507411d78a9942ad32bf017
Keywords
cosmic cream spectra iii charge protons nuclei proton and helium tev/n

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