کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5466100 | 1517981 | 2017 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Be/Al-based multilayer mirrors with improved reflection and spectral selectivity for solar astronomy above 17Â nm wavelength
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Be/Al-based multilayer mirrors with improved reflection and spectral selectivity for solar astronomy above 17Â nm wavelength Be/Al-based multilayer mirrors with improved reflection and spectral selectivity for solar astronomy above 17Â nm wavelength](/preview/png/5466100.png)
چکیده انگلیسی
It is shown that in the vicinity of 17Â nm wavelength, Be can be used as an optically contrasting material with Al in periodic multilayer mirrors. At the same time, due to the low absorption of both Be and Al, we can expect a unique combination of reflective characteristics: record high peak reflectivity and spectral selectivity simultaneously. Although the theoretical reflectivity of a Be/Al multilayer is 78% at normal incidence and at the 17.14Â nm wavelength, we recorded only 46% for a pure Be/Al structure. The introduction of 1Â nm Si on top of the Be layers in each period increases the reflection up to 61% at normal incidence. The increase of the reflection coefficient of Be/Si/Al multilayer mirrors is conditioned by smoothing the interfaces from root-mean-square value of 1.3Â nm in pure Be/Al structures to 0.6Â nm in Si-containing samples. We suppose that the smoothing effect is connected with the amorphization of Al films in the presence of Si.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 631, 1 June 2017, Pages 106-111
Journal: Thin Solid Films - Volume 631, 1 June 2017, Pages 106-111
نویسندگان
N.I. Chkhalo, D.E. Pariev, V.N. Polkovnikov, N.N. Salashchenko, R.A. Shaposhnikov, I.L. Stroulea, M.V. Svechnikov, Yu.A. Vainer, S.Yu. Zuev,