Abstract
Preferential heating and selective acceleration of oxygen (O) and ultraheavy ions (UH) with an atomic number Z > 34 in solar 3He-rich or impulsive flares are theoretically and numerically investigated according to the two-stage acceleration mechanism. It is shown that parallel propagating ion-cyclotron Alfven waves can be much more efficient at heating ultraheavy ions than at heating oxygen through cyclotron resonances. This preferential heating of ultraheavy ions can result in three-order enhancements of abundance ratio UH/O in high-energy nuclei accelerated in the solar impulsive flares, which are consistent with the extreme enhancements of ultraheavy ions relative to oxygen observed in solar 3He-rich events in recent years.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
