5 research outputs found
Nucleus-Nucleus Bremsstrahlung from Ultrarelativistic Collisions
The bremsstrahlung produced when heavy nuclei collide is estimated for
central collisions at the Relativistic Heavy Ion Collider. Soft photons can be
used to infer the rapidity distribution of the outgoing charge. An experimental
design is outlined.Comment: 12 pages, 7 figures, uses revte
Precision Measurement of the Flux in Primary Cosmic Rays from 0.5Â GeV to 1Â TeV with the Alpha Magnetic Spectrometer on the International Space Station
We present a measurement of the cosmic ray (e+ + e−) flux in the range 0.5 GeV to 1 TeV based on the analysis of 10.6 million (e+ + e−) events collected by AMS. The statistics and the resolution of AMS provide a precision measurement of the flux. The flux is smooth and reveals new and distinct information. Above 30.2 GeV, the flux can be described by a single power law with a spectral index γ=−3.170±0.008(stat+syst)±0.008(energy scale)