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O'Neal, Claire |
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Title |
A project guide to rocks and minerals |
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2010 |
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Mitchell Lane Publishers |
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1-47 |
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children |
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1147 |
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Author |
Czerny, Carl; Germer, Heinrich |
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Title |
Selected pianoforte-studies. Edition nr. 300 |
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1900 |
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children, music, piano, learning, school |
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Hansen |
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no |
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1845 |
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Author |
Калмыков, Б.; Фридкин, Г. |
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Title |
Сольфеджио. Часть 2. Двухголосие |
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1970 |
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children, music, piano, school, learning |
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Музыка |
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Москва |
Editor |
Дурандина, Е. |
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1844 |
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Author |
Churikov, Victor M.; Kopp, Victor I.; Genack, Azriel Z. |
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Title |
Chiral diffraction gratings in twisted microstructured fibers |
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Journal Article |
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Year |
2010 |
Publication |
Optics Letters |
Abbreviated Journal |
Opt. Lett. |
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35 |
Issue |
3 |
Pages |
342-344 |
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chiral diffracion gratings, optical fiber gratings, from chiralphotonics |
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Abstract |
We observed dips in transmission spectra of uniformly twisted pure-silica microstructured fibers. The spectral positions of the dips and their insensitivity to the surrounding medium are consistent with Bragg diffraction from the helical structure. The reproducibility of the variation of the dip wavelength with temperature up to 1000°C makes the chiral diffraction grating suitable for high-temperature sensing. |
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853 |
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Author |
Hoeffgen, S.K.; Kuhnhenn, J.; Weinand, U. |
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Title |
High radiation sensitivity of chiral long period gratings |
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Journal Article |
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Year |
2010 |
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IEEE Trans. Nucl. Sci. |
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57 |
Issue |
5 |
Pages |
2915 - 2922 |
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chiral fiber gratings, chiral gratings, chiral LPG, from chiralphotonics |
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Abstract |
The radiation sensitivity of chiral long period gratings was investigated for the first time. After a Co-60 gamma dose of 100 kGy they show radiation-induced changes of their transmission dip wavelength of up to 10 nm, which is 100 to 1000 times higher than the radiation-induced wavelength shift of different fiber Bragg grating types. They can therefore be used as radiation sensors down to doses of 10 Gy or even below, but not for accurate dose measurements since the size of the wavelength shift after a certain dose still depends on the radiation dose rate. Chiral gratings made of eight single mode fiber types with differences of their radiation-induced attenuation of several orders of magnitude were investigated in order to look for a correlation between dip wavelength shift and fiber attenuation. However, the dip wavelength curves do not show exactly the same order as the fiber attenuation curves. A theory that can exactly predict all properties of the chiral gratings might enable us to specify from our results an optimized fiber for the production of gratings that can also be used for radiation dosimetry. |
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848 |
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