A new experiment for measuring the flux of high energy iron nuclei in cosmic rays

Sood, R. K.; Panettieri, J.

doi:10.1016/0029-554x(81)91240-4

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“…By achieving an absolute measurement of the iron flux, relatively free of the uncertainty in particle interaction models, the Balloon Air CHerenkov (BACH) technique can provide an independent calibration for air shower experiments, thus opening a path for composition measurements for energies at and above the knee. This technique was discussed by Sitte (1965) and Gough (1975), and used initially by Sood (1983;Sood and Panettieri, 1981). In this paper we report the result obtained from the initial flight of our developmental balloon payload (PDQ BACH).…”

Section: Introductionmentioning

confidence: 99%

A measurement of the flux of cosmic ray iron at 5×1013 eV

Clem¹,

Droege²,

Evenson³

et al. 2002

Astroparticle Physics

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We present results from the initial flight of our Balloon Air CHerenkov (BACH) payload. BACH detects air Cherenkov radiation from cosmic ray nuclei as coincident flashes in two optical modules. The flight (dubbed PDQ BACH) took place on April 22, 1998 from Ft. Sumner, New Mexico. During an exposure of 2.75 hours, with a typical threshold energy for iron nuclei of 2.2×10 13 eV, we observed several events cleanly identifiable as iron group nuclei. Analysis of the data yields a new flux measurement that is fully consistent with that reported by other investigations.

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