کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1683167 | 1010493 | 2011 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Discussion about the effects of Mössbauer source line broadening
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Discussion about the effects of Mössbauer source line broadening Discussion about the effects of Mössbauer source line broadening](/preview/png/1683167.png)
چکیده انگلیسی
A detailed analysis of the effects of Mössbauer source line broadening is provided. Computer calculations of emission line broadening of Mössbauer sources with various effective thicknesses using the quantum mechanical theory of the emission spectrum proposed by Odeurs and Hoy, Nucl. Instrum. Methods Phys. Res. B, 254 (2007) 143-148 [1] are made. Corresponding calculations are performed using two simpler classical models giving an account of the non-resonant absorption of the radiation. Differences between the results obtained with the theory of Odeurs and Hoy, other model calculations and experimental data, and also inaccuracies, which could give rise to unusual large broadenings, are discussed. Two experimental tests are described, which unambiguously show that the broadenings calculated in [1] as a result of source line self-absorption broadening (age broadening) are huge and unrealistic. These quantitative evaluations of the age broadening yields an increase of line width of about 0.0004Â mm/s for the decrease of 57Co/57Fe source activity by 1Â mCi. Our conclusion is that the predicted observation of “hole burning” line profile could be possible, but only at huge source activities and thicknesses, which are practically not used.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 269, Issue 2, 15 January 2011, Pages 145-152
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 269, Issue 2, 15 January 2011, Pages 145-152
نویسندگان
V. Rusanov, V. Gushterov, L. Tsankov, L.H. Böttger, A.X. Trautwein,