Burch J L, Cravens T E, Llera K, Goldstein R, Mokashi P, Tzou C-Y, Broiles T
Southwest Research Institute San Antonio Texas USA.
Physics and Astronomy Department University of Kansas Lawrence Kansas USA.
Geophys Res Lett. 2015 Jul 16;42(13):5125-5131. doi: 10.1002/2015GL064504. Epub 2015 Jul 14.
As Rosetta was orbiting comet 67P/Churyumov-Gerasimenko, the Ion and Electron Sensor detected negative particles with angular distributions like those of the concurrently measured solar wind protons but with fluxes of only about 10% of the proton fluxes and energies of about 90% of the proton energies. Using well-known cross sections and energy-loss data, it is determined that the fluxes and energies of the negative particles are consistent with the production of H ions in the solar wind by double charge exchange with molecules in the coma.
当“罗塞塔”号环绕67P/丘留莫夫－格拉西缅科彗星运行时，离子与电子传感器探测到了负粒子，其角分布与同时测量的太阳风质子的角分布相似，但通量仅约为质子通量的10%，能量约为质子能量的90%。利用已知的截面和能量损失数据，确定负粒子的通量和能量与太阳风中通过与彗发中的分子进行双电荷交换产生氢离子的情况相符。
