تقرير
Collisional effects on the formation of the second solar spectrum of the Sr {\sc ii} $\lambda$4078 line
| العنوان: | Collisional effects on the formation of the second solar spectrum of the Sr {\sc ii} $\lambda$4078 line |
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| المؤلفون: | Deb, C., Derouich, M. |
| سنة النشر: | 2014 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics |
| الوصف: | This work aims to provide key elements to gain better understanding of the formation of the second solar spectrum of the Sr II $\lambda$4078 line. We show that in a certain range of hydrogen density, the effect of isotropic collisions between Sr II ions with hydrogen atoms is important in determining the polarization of the Sr II $\lambda$4078 line. The use of an atomic model that neglects the metastable level 4d of Sr II can induce errors of up to 25 \% in the value of the scattering polarization of the solar Sr II $\lambda$4078 line. Comment: Accepted for publication in Astronomy and Astrophysics |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1051/0004-6361/201424176 |
| URL الوصول: | http://arxiv.org/abs/1409.7879 |
| رقم الأكسشن: | edsarx.1409.7879 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1051/0004-6361/201424176 |
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