Speaker
Stephane Coutu
(Penn State University)
Description
Measurements of cosmic rays are made using their atmospheric secondary products from deep underground or over an extended area at the ground surface, but also with instruments flown by balloons and rockets to catch the primary particles directly. The present generation of direct measurements now overlap in energy those made with secondary detection, providing a fertile cross calibration and new insights on the nature and origin of these particles. We present a brief overview of the present state of direct cosmic ray measurements of nuclei (composition, primary, secondary, isotopes, ultraheavy), building on the legacy of the pioneering MACRO studies.
