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Relative abundances of primary cosmic ray nuclei B-C-N-O in the energy region from 10 GeV/n to 200 GeV/n. Results from the science flight of ATIC.
Speakers
- Dr. A. D. PANOV
Primary authors
- Dr. A. D. PANOV (Skobelstyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia)
Co-authors
- J. H. ADAMS (Marshall Space Flight Center, Huntsville, AL, USA)
- H. S. AHN (University of Maryland, Institute for Physical Science & Technology, College Park, MD, USA)
- G. L. BASHINDZHAGYAN (Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia)
- K. E. BATKOV (Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia)
- J. CHANG (Purple Mountain Observatory, Chinese Academy of Sciences, China)
- M. CHRISTL (Marshall Space Flight Center, Huntsville, AL, USA)
- A. R. FAZELY (Southern University, Department of Physics, Baton Rouge, LA, USA)
- O. GANEL (University of Maryland, Institute for Physical Science & Technology, College Park, MD, USA)
- R. M. GUNASINGHA (Southern University, Department of Physics, Baton Rouge, LA, USA)
- T. G. GUZIK (Louisiana State University, Department of Physics and Astronomy, Baton Rouge, LA, USA)
- J. ISBERT (Louisiana State University, Department of Physics and Astronomy, Baton Rouge, LA, USA)
- K. C. KIM (University of Maryland, Institute for Physical Science & Technology, College Park, MD, USA)
- E. N. KOUZNETSOV (Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia)
- M. I. PANASYUK (Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia)
- W. K. H. SCHMIDT (Max-Planck Institut for Solar System Research, Katlenburg-Lindau, Germany)
- E. S. SEO (University of Maryland, Institute for Physical Science & Technology, College Park, MD, USA)
- N. V. SOKOLSKAYA (Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia)
- J. W. WATTS (Marshall Space Flight Center, Huntsville, AL, USA)
- J. P. WEFEL (Louisiana State University, Department of Physics and Astronomy, Baton Rouge, LA, USA)
- J. WU (University of Maryland, Institute for Physical Science & Technology, College Park, MD, USA)
- V. I. ZATSEPIN (Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia)
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Abstract content
The ATIC balloon-borne experiment measures the energy spectra of elements from H to Fe in primary cosmic rays from about 100 GeV to 100 TeV. ATIC is comprised of a fully active bismuth germanate calorimeter, a carbon target with embedded scintillator hodoscopes, and a silicon matrix that is used as a main charge detector. The silicon matrix produces good charge resolution for the protons and helium but only a partial resolution for heavier nuclei. In the present paper a charge resolution of ATIC device was essentially improved and backgrounds were reduced in the region from Be to Si by means of the upper layer of the scintillator hodoscope that was used as an additional charge detector together with silicon matrix. The flux ratios nuclei B/C, C/O, N/O in the energy region from about 10 GeV/nucleon to 200 GeV/nucleon that were obtained from new high-resolution and high-quality charge spectra of nuclei are presented. The results are compared with existing theoretical predictions.
If this papers is presented for a collaboration, please specify the collaboration
ATIC
Reference
Proceedings of the 30th International Cosmic Ray Conference; Rogelio Caballero, Juan Carlos D'Olivo, Gustavo Medina-Tanco, Lukas Nellen, Federico A. Sánchez, José F. Valdés-Galicia (eds.); Universidad Nacional Autónoma de México, Mexico City, Mexico, 2008; Vol. 2 (OG part 1), pages 3-6
