In Situ Spectral Magnetoellipsometry for Structural, Magnetic and Optical Properties of Me/Si (Me Mn, Fe) Nanolayers

In our work we present in-situ spectral magnetoellipsometer is equipped with sapphire manipulator. which allows us to carry out in-situ and in-time optical and magnetooptical measurements in the range from 10 K to 1500 K in spectral range 1.5 eV-4.0 eV (830 nm-300 nm), the range of magnetic fields is +/-0.4 T. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3555

Особенности характерных электромагнитных колебаний плазменных сгустков в длинном пробкотроне

The aim of this work was to study the spectrum of LF and HF oscillations generated by plasma bunches created and confined in the volume of a microwave cavity immersed in the magnetic field of a mirror trap. The registration of electrostatic oscillations in the plasma was carried out using two flat electrodes mounted diametrically opposite in the central part of the cavity close to its wall. This diagnostic showed the presence of low-frequency oscillations with frequencies of 130 kHz and 450 kHz. The oscillation spectrum in the microwave range was recorded at the minimum of the magnetic trap using a real-time spectrometer and a loosely coupled loop antenna. The registration of the spectra in the 40 MHz band revealed a regular change in the frequency of the fundamental oscillation mode of the cavity and the presence of two harmonics of the synchrotron radiation of the plasma bunch at frequencies of 2.25 GHz and 4.52 GHz, respectively. According to the obtained data, the parameters of the formed bunch (density, shape, volume, energy spectra of plasma components) can be restored.Целью данной работы являлось изучение спектра НЧ и ВЧ колебаний генерируемых плазменными сгустками, создаваемыми и удерживаемыми в рабочем объеме высокочастотного резонатора, находящегося в магнитном поле зеркальной ловушки. Регистрация электростатических колебаний в плазме осуществлялось при помощи двух плоских электродов установленных диаметрально противоположно в центральной части резонатора в его пристеночной области. Эта диагностика показала наличие низкочастотных колебаний с частотами 130 кГц и 450 кГц. Спектр колебаний в СВЧ диапазоне регистрировался в минимуме магнитной ловушки при помощи спектрометра реально времени и слабо связанной петлевой антенны. Регистрация спектров в полосе 40 МГц позволила выявить закономерное изменение частоты основной моды колебаний резонатора и наличие двух гармоник синхротронного излучения плазменного сгустка на частотах 2.25 ГГц и 4.52 ГГц соответственно. По полученным данным могут быть восстановлены параметры сформированного сгустка (плотность, форма, объем, энергетические спектры компонент плазмы)

The phenylation of 3βpicoline. Isolation and establishment of the structure of β-pyridyl-α-dehydropiperidine

It was established that the side product that is formed in substantial amounts in the phenylation of β-picoline by phenyllithium is 3-methyl-2-phenyl-5-(3-methyl-2-phenyl-3,4-dehydropiperidyl-6)pyridine - a structural analog of anabasine. Its structure was demonstrated by spectral methods and by chemical conversions. © 1985 Plenum Publishing Corporation

The phenylation of 3βpicoline. Isolation and establishment of the structure of β-pyridyl-α-dehydropiperidine

It was established that the side product that is formed in substantial amounts in the phenylation of β-picoline by phenyllithium is 3-methyl-2-phenyl-5-(3-methyl-2-phenyl-3,4-dehydropiperidyl-6)pyridine - a structural analog of anabasine. Its structure was demonstrated by spectral methods and by chemical conversions. © 1985 Plenum Publishing Corporation

10-Sila-2-azaanthracenes hydrogenated in the pyridine fragment

The corresponding 1,2,3,4,4a, 9,9a, 10-octahydro derivatives were obtained in the catalytic hydrogenation of 10,10-dimethyl- and 10-methyl-10-phenyl-9,10-dihydro-10-sila-2-azaanthracenes. The hydrogenation of 10,10-dimethyl-10-sila-2-azaanthrone also leads to a substituted octahydrosilaazaanthracene. Isomeric (with respect to the position of the double bond in the nitrogen-containing ring) hexahydrosilaaza-9-anthrols were isolated as a result of the reduction of the methiodide of this silaazaanthrone with sodium borohydride. © 1991 Plenum Publishing Corporation