کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1780104 | 1523792 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Examples of spectroscopy of laboratory plasma with possible connection to astrophysical plasmas
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
In this paper several examples of line spectra from five different laboratory plasma sources are presented. Polarization Stark spectroscopy using hydrogen and helium lines is used for measuring electric field strength in the discharge. Doppler shifted and excessively broadened profiles are obtained showing presence of atoms with velocities close to those in the narrow line region of AGN. Radiation from a high energy, high density plasma source features very broad profiles used for determination of plasma density. Careful interpretation of spectra is needed in the conditions where several effects are present simultaneously: electric and magnetic field, Doppler effect and plasma inhomogeneity. Examples of line of sight influence on profile are also presented. Similarity between laboratory and astrophysical profiles open a possible field for experimental simulation of astrophysical plasmas.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy Reviews - Volume 53, Issues 7â10, JulyâOctober 2009, Pages 266-271
Journal: New Astronomy Reviews - Volume 53, Issues 7â10, JulyâOctober 2009, Pages 266-271
نویسندگان
Milorad M. Kuraica, Bratislav M. ObradoviÄ, Nikola CvetanoviÄ, Ivan P. DojÄinoviÄ, JagoÅ¡ PuriÄ,