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Recent PAMELA measurements of proton and helium nuclei and cosmic ray acceleration in the galaxy

机译:PAMELA最近对银河中质子和氦核以及宇宙射线加速度的测量

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PAMELA is a satellite borne experiment designed to study with great accuracy cosmic rays of galactic, solar,and trapped nature in a wide energy range (protons: 80 MeV-700 GeV, electrons 50 MeV-400 GeV). Main objectiveis the study of the antimatter component: antiprotons (80 MeV-190 GeV), positrons (50 MeV-270 GeV) and search forantinuclei with a precision of the order of 108 ). The experiment, housed on board the Russian Resurs-DK1 satellite, waslaunched on June, 15th 2006 in a 350 × 600 km orbit with an inclination of 70. In this work we report on the recent resultson proton and helium of galactic origin: data show several deviations from the pure power law spectrum. Furthermorethe ratio proton/helium decreases with increasing rigidity,, hinting to different processes or sources undergone by the twospecies.
机译:PAMELA是一项人造卫星实验,旨在在宽泛的能量范围(质子:80 MeV-700 GeV,电子50 MeV-400 GeV)中高精度地研究银河,太阳和被困自然界的宇宙射线。主要目的是研究反物质成分:反质子(80 MeV-190 GeV),正电子(50 MeV-270 GeV)并寻找精度约为108的反核。该实验安装在俄罗斯Resurs-DK1卫星上,于2006年6月15日在350×600 km轨道上以70°的倾角发射。在这项工作中,我们报告了银河系质子和氦的最新结果:数据显示与纯幂律谱有一些偏差。此外,质子/氦气的比率随着刚性的增加而降低,这暗示了两种物种经历的不同过程或来源。

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