Proton and Helium Spectra from the CREAM-III Flight
International audience 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 a...
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Online Access: | https://hal.science/hal-01554604 https://doi.org/10.3847/1538-4357/aa68e4 |
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ftunivnantes:oai:HAL:hal-01554604v1 2023-05-15T13:40:46+02:00 Proton and Helium Spectra from the CREAM-III Flight Yoon, Y.S. Anderson, T. Barrau, A. Conklin, N.B. Coutu, S. Derome, L. Han, J.H. Jeon, J.A. Kim, K.C. Kim, M.H. Lee, H.Y. Lee, J. Lee, M.H. Lee, S.E. Link, J.T. Menchaca-Rocha, A. Mitchell, J.W. Mognet, S.I. Nutter, S. Park, I.H. Picot-Clemente, N. Putze, A. Seo, E.S. Smith, J. Wu, J. Laboratoire de Physique Subatomique et de Cosmologie (LPSC) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) 2017 https://hal.science/hal-01554604 https://doi.org/10.3847/1538-4357/aa68e4 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/arxiv/1704.02512 info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aa68e4 hal-01554604 https://hal.science/hal-01554604 ARXIV: 1704.02512 doi:10.3847/1538-4357/aa68e4 INSPIRE: 1590855 Astrophys.J. https://hal.science/hal-01554604 Astrophys.J., 2017, 839 (1), pp.5. ⟨10.3847/1538-4357/aa68e4⟩ astroparticle physics balloons cosmic rays methods: data analysis helium: nucleus helium: spectrum cosmic radiation: primary helium: energy spectrum charge: resolution CREAM statistical calorimeter atmosphere silicon 5/3 [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] info:eu-repo/semantics/article Journal articles 2017 ftunivnantes https://doi.org/10.3847/1538-4357/aa68e4 2023-03-08T06:44:38Z International audience 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. Article in Journal/Newspaper Antarc* Antarctic Université de Nantes: HAL-UNIV-NANTES Antarctic The Astrophysical Journal 839 1 5 |
institution |
Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
astroparticle physics balloons cosmic rays methods: data analysis helium: nucleus helium: spectrum cosmic radiation: primary helium: energy spectrum charge: resolution CREAM statistical calorimeter atmosphere silicon 5/3 [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
spellingShingle |
astroparticle physics balloons cosmic rays methods: data analysis helium: nucleus helium: spectrum cosmic radiation: primary helium: energy spectrum charge: resolution CREAM statistical calorimeter atmosphere silicon 5/3 [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Yoon, Y.S. Anderson, T. Barrau, A. Conklin, N.B. Coutu, S. Derome, L. Han, J.H. Jeon, J.A. Kim, K.C. Kim, M.H. Lee, H.Y. Lee, J. Lee, M.H. Lee, S.E. Link, J.T. Menchaca-Rocha, A. Mitchell, J.W. Mognet, S.I. Nutter, S. Park, I.H. Picot-Clemente, N. Putze, A. Seo, E.S. Smith, J. Wu, J. Proton and Helium Spectra from the CREAM-III Flight |
topic_facet |
astroparticle physics balloons cosmic rays methods: data analysis helium: nucleus helium: spectrum cosmic radiation: primary helium: energy spectrum charge: resolution CREAM statistical calorimeter atmosphere silicon 5/3 [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
description |
International audience 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. |
author2 |
Laboratoire de Physique Subatomique et de Cosmologie (LPSC) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) |
format |
Article in Journal/Newspaper |
author |
Yoon, Y.S. Anderson, T. Barrau, A. Conklin, N.B. Coutu, S. Derome, L. Han, J.H. Jeon, J.A. Kim, K.C. Kim, M.H. Lee, H.Y. Lee, J. Lee, M.H. Lee, S.E. Link, J.T. Menchaca-Rocha, A. Mitchell, J.W. Mognet, S.I. Nutter, S. Park, I.H. Picot-Clemente, N. Putze, A. Seo, E.S. Smith, J. Wu, J. |
author_facet |
Yoon, Y.S. Anderson, T. Barrau, A. Conklin, N.B. Coutu, S. Derome, L. Han, J.H. Jeon, J.A. Kim, K.C. Kim, M.H. Lee, H.Y. Lee, J. Lee, M.H. Lee, S.E. Link, J.T. Menchaca-Rocha, A. Mitchell, J.W. Mognet, S.I. Nutter, S. Park, I.H. Picot-Clemente, N. Putze, A. Seo, E.S. Smith, J. Wu, J. |
author_sort |
Yoon, Y.S. |
title |
Proton and Helium Spectra from the CREAM-III Flight |
title_short |
Proton and Helium Spectra from the CREAM-III Flight |
title_full |
Proton and Helium Spectra from the CREAM-III Flight |
title_fullStr |
Proton and Helium Spectra from the CREAM-III Flight |
title_full_unstemmed |
Proton and Helium Spectra from the CREAM-III Flight |
title_sort |
proton and helium spectra from the cream-iii flight |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.science/hal-01554604 https://doi.org/10.3847/1538-4357/aa68e4 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Astrophys.J. https://hal.science/hal-01554604 Astrophys.J., 2017, 839 (1), pp.5. ⟨10.3847/1538-4357/aa68e4⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/1704.02512 info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aa68e4 hal-01554604 https://hal.science/hal-01554604 ARXIV: 1704.02512 doi:10.3847/1538-4357/aa68e4 INSPIRE: 1590855 |
op_doi |
https://doi.org/10.3847/1538-4357/aa68e4 |
container_title |
The Astrophysical Journal |
container_volume |
839 |
container_issue |
1 |
container_start_page |
5 |
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1766139793140350976 |