نتایج جستجو برای: hollow cathode lamp

تعداد نتایج: 39438  

سبحانیان, صمد, صادقی, نادر, نقش‌آرا, حمید,

In this paper, the resonance optical absorption method, is used to measure the Cu atoms number density in different power levels of power supply. Atoms are sputtered from a Cu target during plasma magnetron sputtering deposition. For the light source, a commercial Cu hollow cathode lamp is used. For measurement of gas temperature, a small percentage of N2 is added to the gas mixture and the gas...

2010

This paper discusses the parameters which influence the operation of hollow cathode and deuterium lamps. Examples are given of how parameters can be selected in order to improve the quality of analytical results. Aspects of deuterium lamp operation for background correction are also covered.

ژورنال: :پژوهش فیزیک ایران 0
حمید نقش آرا h naghshara tabriz universityدانشگاه تبریز صمد سبحانیان s sobhanian tabriz universityدانشگاه تبریز نادر صادقی n sadeghi universite joseph fourier-grenobleدانشگاه گرونوبل فرانسه

در این مقاله چگالی اتم های مس که به عنوان هدف انتخاب شده است با روش طیف نگاری جذبی تشدیدی برای فشارهای مختلف گاز کاری و توان های مختلف منبع تغذیه سیستم پلاسما اندازه گیری شده است. به عنوان منبع نور برای طیف نگاری جذبی تشدیدی از یک لامپ کاتد توخالی مس (cu hollow cathode lamp) استفاده شده است. ضمنا با اضافه کردن درصد مناسبی از نیتروژن به گاز کاری آرگون با استفاده از طیف دورانی مولکول نیتروژن و با...

2016
Duo Pan Xiaobo Xue Haosen Shang Bin Luo Jingbiao Chen Hong Guo

The Faraday anomalous dispersion optical filter (FADOF), which has acquired wide applications, is mainly limited to some gaseous elements and low melting-point metals before, for the restriction of the attainable atomic density. In conventional FADOF systems a high atomic density is usually achieved by thermal equilibrium at the saturated vapor pressure, hence for elements with high melting-poi...

Seventeen two-photon transitions for neon have been observed in the 580- 635 nm spectral region for use in the spectroscopic study of its higher excited levels, which are not accessible by one-photon absorption. To compare the two and one-photon absorption signals originating from the same lower level, an effort was made to record single-photon optogalvanic spectrum in the available wavele...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2004
Tariq M Naeem Hideyuki Matsuta Kazuaki Wagatsuma

A novel atomic emission spectrometry comprising laser ablation as a sampling source and hollow cathode plasma for the excitation of ablated sample atoms is proposed. In this arrangement, a conventional Grimm-type discharge lamp is employed, but the polarity of the power supply is reversed so that the cylindrical hollow tube acts as a cathode and the glow discharge plasma is produced within this...

Journal: :Journal of The Optical Society of America B-optical Physics 2021

We report a robust method of stabilizing laser to the frequency an atomic transition using hollow cathode lamp. In contrast standard dichroic vapor lock (DAVLL) method, which uses dichroism induced by longitudinal magnetic field, we employ birefringence transversal field. applied this $(5s^2)\ {}^{1}S_{0} - (5s5p)\ {}^{1}P_{1}$ (461 nm) Sr. Although is made ferromagnetic material, successfully ...

Journal: :Journal of Physics B: Atomic, Molecular and Optical Physics 2018

Journal: :Journal of Physics B: Atomic, Molecular and Optical Physics 2018

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