کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9837855 | 1525285 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Heterodyne and homodyne detection in fluctuating smectic membranes by photon correlation spectroscopy at X-ray and visible wavelengths
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Heterodyne and homodyne detection in fluctuating smectic membranes by photon correlation spectroscopy at X-ray and visible wavelengths Heterodyne and homodyne detection in fluctuating smectic membranes by photon correlation spectroscopy at X-ray and visible wavelengths](/preview/png/9837855.png)
چکیده انگلیسی
We discuss heterodyne and homodyne detection in photon correlation spectroscopy (PCS) performed at X-ray and visible wavelengths. Fluctuating smectic membranes in a reflection geometry have been used as model systems. At X-ray wavelength (XPCS), under specular conditions a strong elastic signal is present that acts as a time-independent internal reference source. This leads to a transition from heterodyne detection at the specular ridge to homodyne detection off-specular giving rise to a difference in relaxation time of a factor 2. In addition by comparing similar propagating modes at the specular ridge (XPCS) and at off-specular positions (PCS with visible light), cos-like and cos2-like oscillations have been observed as expected for heterodyne and homodyne mixing, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 357, Issues 1â2, 28 February 2005, Pages 39-44
Journal: Physica B: Condensed Matter - Volume 357, Issues 1â2, 28 February 2005, Pages 39-44
نویسندگان
Wim H. de Jeu, Anders Madsen, Irakli Sikharulidze, Samuel Sprunt,