The role of nuclei-nuclei interactions in the production of gamma-ray lines in solar flaresстатья
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Дата последнего поиска статьи во внешних источниках: 4 октября 2013 г.
Аннотация:Abstract Dramatic extensions of experimental possibilities (spacecraft RHESSI,
CORONAS-F and others) in solar gamma-ray astronomy call for urgent, detailed
theoretical consideration of a set of physical problems of solar activity and solarterrestrial
relationships that earlier may have only been outlined. Here we undertake
a theoretical analysis of issues related to the production of gamma-radiation
in the processes of interactions of energetic (accelerated) heavy and middle nuclei
with the nuclei of the solar atmosphere (the so-called i-j interactions). We also
make an estimate of the contribution of these interactions to the formation of nuclear
and isotopic abundances of the solar atmosphere in the range of light and
rare elements. The analysis is carried out for solar flares in the wide range of their
intensities. We compare our theoretical estimates with RHESSI observations for
the flare of 2002 July 23. It was shown that the 24Mg gamma-ray emission in this
event was produced by the newly generated Mg nuclei. With a high probability,
the gamma-ray line emission of 28Si nuclei from this flare was generated by the
same processes