Measurement of the Iron Spectrum in Cosmic Rays from 10 GeV/n to 2.0 TeV/n with the Calorimetric Electron Telescope on the International Space Station.

Journal

Physical review letters

ISSN: 1079-7114

Titre abrégé: Phys Rev Lett

Pays: United States

ID NLM: 0401141

Informations de publication

Date de publication:
18 Jun 2021

Historique:

received: 15 01 2021

revised: 24 02 2021

accepted: 12 04 2021

entrez: 2 7 2021

pubmed: 3 7 2021

medline: 3 7 2021

Statut: ppublish

Résumé

The Calorimetric Electron Telescope (CALET), in operation on the International Space Station since 2015, collected a large sample of cosmic-ray iron over a wide energy interval. In this Letter a measurement of the iron spectrum is presented in the range of kinetic energy per nucleon from 10 GeV/n to 2.0 TeV/n allowing the inclusion of iron in the list of elements studied with unprecedented precision by space-borne instruments. The measurement is based on observations carried out from January 2016 to May 2020. The CALET instrument can identify individual nuclear species via a measurement of their electric charge with a dynamic range extending far beyond iron (up to atomic number Z=40). The energy is measured by a homogeneous calorimeter with a total equivalent thickness of 1.2 proton interaction lengths preceded by a thin (3 radiation lengths) imaging section providing tracking and energy sampling. The analysis of the data and the detailed assessment of systematic uncertainties are described and results are compared with the findings of previous experiments. The observed differential spectrum is consistent within the errors with previous experiments. In the region from 50 GeV/n to 2 TeV/n our present data are compatible with a single power law with spectral index -2.60±0.03.

Identifiants

DOI: 10.1103/PhysRevLett.126.241101 PMID: 34213922

pubmed: 34213922

doi: 10.1103/PhysRevLett.126.241101

doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

241101

Auteurs

O Adriani (O)

Department of Physics, University of Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

INFN Sezione di Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

Y Akaike (Y)

Waseda Research Institute for Science and Engineering, Waseda University, 17 Kikuicho, Shinjuku, Tokyo 162-0044, Japan.

JEM Utilization Center, Human Spaceflight Technology Directorate, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan.

K Asano (K)

Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba 277-8582, Japan.

Y Asaoka (Y)

Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba 277-8582, Japan.

E Berti (E)

Department of Physics, University of Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

INFN Sezione di Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

G Bigongiari (G)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3, 56127 Pisa, Italy.

W R Binns (WR)

Department of Physics and McDonnell Center for the Space Sciences, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.

M Bongi (M)

Department of Physics, University of Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

INFN Sezione di Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

P Brogi (P)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3, 56127 Pisa, Italy.

A Bruno (A)

Heliospheric Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

J H Buckley (JH)

Department of Physics and McDonnell Center for the Space Sciences, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.

N Cannady (N)

Center for Space Sciences and Technology, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA.

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Center for Research and Exploration in Space Sciences and Technology, NASA/GSFC, Greenbelt, Maryland 20771, USA.

G Castellini (G)

Institute of Applied Physics (IFAC), National Research Council (CNR), Via Madonna del Piano, 10, 50019 Sesto, Fiorentino, Italy.

C Checchia (C)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

M L Cherry (ML)

Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, Louisiana 70803, USA.

G Collazuol (G)

Department of Physics and Astronomy, University of Padova, Via Marzolo, 8, 35131 Padova, Italy.

INFN Sezione di Padova, Via Marzolo, 8, 35131 Padova, Italy.

K Ebisawa (K)

Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan.

H Fuke (H)

Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan.

S Gonzi (S)

Department of Physics, University of Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

INFN Sezione di Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

T G Guzik (TG)

Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, Louisiana 70803, USA.

T Hams (T)

Center for Space Sciences and Technology, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA.

K Hibino (K)

Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa 221-8686, Japan.

M Ichimura (M)

Faculty of Science and Technology, Graduate School of Science and Technology, Hirosaki University, 3, Bunkyo, Hirosaki, Aomori 036-8561, Japan.

K Ioka (K)

Yukawa Institute for Theoretical Physics, Kyoto University, Kitashirakawa Oiwakecho, Sakyo, Kyoto 606-8502, Japan.

W Ishizaki (W)

Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba 277-8582, Japan.

M H Israel (MH)

Department of Physics and McDonnell Center for the Space Sciences, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.

K Kasahara (K)

Department of Electronic Information Systems, Shibaura Institute of Technology, 307 Fukasaku, Minuma, Saitama 337-8570, Japan.

J Kataoka (J)

Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.

R Kataoka (R)

National Institute of Polar Research, 10-3, Midori-cho, Tachikawa, Tokyo 190-8518, Japan.

Y Katayose (Y)

Faculty of Engineering, Division of Intelligent Systems Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan.

C Kato (C)

Faculty of Science, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan.

N Kawanaka (N)

Hakubi Center, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan.

Department of Astronomy, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan.

Y Kawakubo (Y)

Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, Louisiana 70803, USA.

K Kobayashi (K)

Waseda Research Institute for Science and Engineering, Waseda University, 17 Kikuicho, Shinjuku, Tokyo 162-0044, Japan.

JEM Utilization Center, Human Spaceflight Technology Directorate, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan.

K Kohri (K)

Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.

H S Krawczynski (HS)

Department of Physics and McDonnell Center for the Space Sciences, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.

J F Krizmanic (JF)

Center for Space Sciences and Technology, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA.

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Center for Research and Exploration in Space Sciences and Technology, NASA/GSFC, Greenbelt, Maryland 20771, USA.

J Link (J)

Center for Space Sciences and Technology, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA.

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Center for Research and Exploration in Space Sciences and Technology, NASA/GSFC, Greenbelt, Maryland 20771, USA.

P Maestro (P)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3, 56127 Pisa, Italy.

P S Marrocchesi (PS)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3, 56127 Pisa, Italy.

A M Messineo (AM)

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3, 56127 Pisa, Italy.

University of Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3, 56127 Pisa, Italy.

J W Mitchell (JW)

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

S Miyake (S)

Department of Electrical and Electronic Systems Engineering, National Institute of Technology, Ibaraki College, 866 Nakane, Hitachinaka, Ibaraki 312-8508, Japan.

A A Moiseev (AA)

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Center for Research and Exploration in Space Sciences and Technology, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Department of Astronomy, University of Maryland, College Park, Maryland 20742, USA.

M Mori (M)

Department of Physical Sciences, College of Science and Engineering, Ritsumeikan University, Shiga 525-8577, Japan.

N Mori (N)

INFN Sezione di Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

H M Motz (HM)

Faculty of Science and Engineering, Global Center for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.

K Munakata (K)

Faculty of Science, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan.

S Nakahira (S)

Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan.

J Nishimura (J)

Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan.

G A de Nolfo (GA)

Heliospheric Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

S Okuno (S)

Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa 221-8686, Japan.

J F Ormes (JF)

Department of Physics and Astronomy, University of Denver, Physics Building, Room 211, 2112 East Wesley Avenue, Denver, Colorado 80208-6900, USA.

N Ospina (N)

Department of Physics and Astronomy, University of Padova, Via Marzolo, 8, 35131 Padova, Italy.

INFN Sezione di Padova, Via Marzolo, 8, 35131 Padova, Italy.

S Ozawa (S)

Quantum ICT Advanced Development Center, National Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo 184-8795, Japan.

L Pacini (L)

Department of Physics, University of Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

INFN Sezione di Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

Institute of Applied Physics (IFAC), National Research Council (CNR), Via Madonna del Piano, 10, 50019 Sesto, Fiorentino, Italy.

P Papini (P)

INFN Sezione di Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

B F Rauch (BF)

Department of Physics and McDonnell Center for the Space Sciences, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.

S B Ricciarini (SB)

INFN Sezione di Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

Institute of Applied Physics (IFAC), National Research Council (CNR), Via Madonna del Piano, 10, 50019 Sesto, Fiorentino, Italy.

K Sakai (K)

Center for Space Sciences and Technology, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA.

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Center for Research and Exploration in Space Sciences and Technology, NASA/GSFC, Greenbelt, Maryland 20771, USA.

T Sakamoto (T)

College of Science and Engineering, Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo, Sagamihara, Kanagawa 252-5258, Japan.

M Sasaki (M)

Astroparticle Physics Laboratory, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Center for Research and Exploration in Space Sciences and Technology, NASA/GSFC, Greenbelt, Maryland 20771, USA.

Department of Astronomy, University of Maryland, College Park, Maryland 20742, USA.

Y Shimizu (Y)

Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa 221-8686, Japan.

A Shiomi (A)

College of Industrial Technology, Nihon University, 1-2-1 Izumi, Narashino, Chiba 275-8575, Japan.

P Spillantini (P)

Department of Physics, University of Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

F Stolzi (F)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3, 56127 Pisa, Italy.

S Sugita (S)

College of Science and Engineering, Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo, Sagamihara, Kanagawa 252-5258, Japan.

A Sulaj (A)

Department of Physical Sciences, Earth and Environment, University of Siena, via Roma 56, 53100 Siena, Italy.

INFN Sezione di Pisa, Polo Fibonacci, Largo B. Pontecorvo, 3, 56127 Pisa, Italy.

M Takita (M)

Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba 277-8582, Japan.

T Tamura (T)

Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa 221-8686, Japan.

T Terasawa (T)

RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.

S Torii (S)

Waseda Research Institute for Science and Engineering, Waseda University, 17 Kikuicho, Shinjuku, Tokyo 162-0044, Japan.

Y Tsunesada (Y)

Division of Mathematics and Physics, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan.

Y Uchihori (Y)

National Institutes for Quantum and Radiation Science and Technology, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan.

E Vannuccini (E)

INFN Sezione di Florence, Via Sansone, 1, 50019 Sesto, Fiorentino, Italy.

J P Wefel (JP)

Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, Louisiana 70803, USA.

K Yamaoka (K)

Nagoya University, Furo, Chikusa, Nagoya 464-8601, Japan.

S Yanagita (S)

College of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.

A Yoshida (A)

College of Science and Engineering, Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo, Sagamihara, Kanagawa 252-5258, Japan.

K Yoshida (K)

Department of Electronic Information Systems, Shibaura Institute of Technology, 307 Fukasaku, Minuma, Saitama 337-8570, Japan.

Classifications MeSH