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Model calculation of hydrogen balmer emissions under various modes of proton precipitation
Institution:1. Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario, Canada;2. Department of Medicine, McMaster University, Hamilton, Ontario, Canada;3. Michael DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada;4. Cardiac Surgery, McMaster University, Hamilton, Ontario, Canada;5. Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada;1. School of Petrochemical Engineering, Shenyang University of Technology, 30 Guanghua Street, Liaoyang, 111003, PR China;2. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, PR China;1. Division of Pulmonology, University Hospital of Zurich, Switzerland;2. Division of Angiology, University Hospital of Zurich, Switzerland
Abstract:A theoretical model is developed to study the Hα and Hβ volume emission rates in proton auroras. The Hα and Hβ photon yields are deduced by using the recent experimental cross-sections. These photon yields are then coupled with the primary proton fluxes to get the altitude profiles of the emissions. The prediction of the altitude profiles are found in good agreement with the auroral measurements. The effects of various modes of proton precipitation on the emission intensities (IHα and IHβ) are discussed and a comparison is made with the earlier theoretical models. It is also found that the intensity ratio IHα/IHβ varies between 5 and 6.
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