Revised energy spectra for primary elements (H - Si) above 50 GeV from the ATIC-2 science flight

The Advanced Thin Ionization Calorimeter (ATIC) long duration balloon experiment had a successful science flight (12/02 -1/03) accumulating 18 days of data during a single circumnavigation of Antarctica. ATIC measures the energy spectra of elements from H to Fe in primary cosmic rays using a fully a...

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Bibliographic Details
Main Authors: Wefel, J. P., Adams, J. H., Ahn, H. S., Bashindzhagyan, G., Chang, J., Christl, M., Fazely, A. R., Ganel, O., Gunashingha, R. M., Guzik, T. G., Isbert, J. B., Kim, K. C., Kouznetsov, E. N., Panasyuk, M., Panov, A., Schmidt, W. K.H., Seo, E. S., Sokolskaya, N., Watts, J., Wu, J., Zatsepin, V. I.
Format: Text
Language:unknown
Published: LSU Scholarly Repository 2007
Subjects:
Antarc*
Antarctica
Online Access:https://repository.lsu.edu/physics_astronomy_pubs/5495
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Summary:The Advanced Thin Ionization Calorimeter (ATIC) long duration balloon experiment had a successful science flight (12/02 -1/03) accumulating 18 days of data during a single circumnavigation of Antarctica. ATIC measures the energy spectra of elements from H to Fe in primary cosmic rays using a fully active Bismuth Germanate calorimeter preceded by a carbon target, with embedded scintillator hodoscopes, and a silicon matrix charge detector at the top. Preliminary results from ATIC have been reported in previous conferences. The revised results reported here are derived from a new analysis of the data with improved charge resolution, lower background and revised energy calibration. The raw energy deposit spectra are de-convolved into primary energy spectra and extrapolated to the top of the atmosphere. We compare these revised results to previous data.

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