Publication
Precision Measurement of the Boron to Carbon Flux Ratio in Cosmic Rays from 1.9 GV to 2.6 TV with the Alpha Magnetic Spectrometer on the International Space Station
| dc.contributor.author | AMS collaboration (268 authors) | |
| dc.contributor.author | Arruda, L. | |
| dc.contributor.author | Barao, F. | |
| dc.contributor.author | Nunes, P. | |
| dc.contributor.author | Orcinha, M. | |
| dc.contributor.author | Pereira, R. | |
| dc.date.accessioned | 2019-02-04T11:50:31Z | |
| dc.date.available | 2019-02-04T11:50:31Z | |
| dc.date.issued | 2016-11-28 | |
| dc.date.updated | 2019-02-04T11:50:31Z | |
| dc.description.abstract | Knowledge of the rigidity dependence of the boron to carbon flux ratio (B/C) is important in understanding the propagation of cosmic rays. The precise measurement of the B/C ratio from 1.9 GV to 2.6 TV, based on 2.3 million boron and 8.3 million carbon nuclei collected by AMS during the first 5 years of operation, is presented. The detailed variation with rigidity of the B/C spectral index is reported for the first time. The B/C ratio does not show any significant structures in contrast to many cosmic ray models that require such structures at high rigidities. Remarkably, above 65 GV, the B/C ratio is well described by a single power law RΔ with index Δ=-0.333±0.014(fit)±0.005(syst), in good agreement with the Kolmogorov theory of turbulence which predicts Δ=-1/3 asymptotically. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Rev.Lett. 117 (2016) 231102; DOI 10.1103/PhysRevLett.117.231102 | |
| dc.identifier.uri | http://dx.doi.org/10.1103/PhysRevLett.117.231102 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/27243 | |
| dc.language.iso | eng | |
| dc.title | Precision Measurement of the Boron to Carbon Flux Ratio in Cosmic Rays from 1.9 GV to 2.6 TV with the Alpha Magnetic Spectrometer on the International Space Station | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |