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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >First Adiabatic Invariants and Phase Space Densities for the Jovian Electron and Proton Radiation Belts-Galileo and GIRE3 Estimates
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First Adiabatic Invariants and Phase Space Densities for the Jovian Electron and Proton Radiation Belts-Galileo and GIRE3 Estimates

机译：首先绝热不变量和相空间威风凛凛的电子和质子的密度辐射Belts-Galileo和GIRE3估计

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The fluxes and phase space densities for a fixed first adiabatic invariant for high-energy electrons and protons provide important inputs for various scientific studies for determining the physics of particle diffusion and energization. This study provides estimates of the first adiabatic invariant and phase space density based on the complete and large data base available from the Energetic Particle Detector (EPD) on Galileo for the Jovian environment. To be specific, 10 min averages of the high-energy electron and proton data are used to compute differential flux spectra versus energy between L = 8 and 25 over the mission. These spectra provide estimates of the differential fluxes and phase space density for constant first adiabatic invariants between 10~2 and 10~5 MeV/G. As would be expected, the electron and proton fluxes and phase space densities generally trend lower as the planet is approached. The results indicate that, whereas the overall trends for each orbit are consistent, detailed orbit to orbit variations can be observed. Galileo orbit C22 is presented as an example of deviations from the mean downward trend. To validate the Galileo results and extend the findings into L = 3, the GIRE3 model was also used to compute the fluxes and phase space densities for constant first adiabatic invariant versus L-shell. Comparison between GIRE3 and EPD demonstrates that the model adequately reproduces the EPD data trends and they consistently show additional variations near Io. This provides proof that the GIRE3 is a useful starting point for diffusion analyses and similar studies.
机译：为一个固定的通量和相空间密度首先对高能绝热不变量电子和质子提供重要的输入用于各种科学研究来确定粒子扩散和物理通电。第一个绝热不变量和相空间基于完整的密度和大数据基础可以从高能粒子探测器(环保署)伽利略的威风凛凛的环境。具体而言,10分钟平均的高能电子和质子的数据被用来计算微分谱通量和能量之间的L= 8和25的使命。提供的微分估计通量和第一个绝热相空间密度为常数10 ~ 2之间的不变量和10 ~ 5兆电子伏/ G。预计,电子和质子通量相空间密度一般趋势降低地球上接近。,而每个轨道的总体趋势是一致的,详细的轨道的轨道可以观察到的变化。作为一个偏离的例子意味着下降的趋势。结果和研究结果扩展到L = 3,GIRE3模型也被用于计算通量和相空间密度为常数绝热不变量与l层。GIRE3和环保署表明模型之间的关系充分再现了环保署趋势和数据他们一致显示额外的附近变化Io。对扩散分析和有用的起点类似的研究。

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