نتایج جستجو برای: electron absorption

تعداد نتایج: 429342  

Journal: :Physical review 2021

We study a new class of signals where fermionic dark matter is absorbed by bound electron targets. Fermionic absorption in direct detection and neutrino experiments are sensitive to with sub-MeV mass, probing region parameter space which otherwise challenging detect. calculate the rate energy deposition spectrum xenon-based detectors, making projections for current future experiments. present t...

Journal: :international journal of nanoscience and nanotechnology 2015
m. najafi h. haratizadeh

europium (eu) doped zno microsphere based nano-sheets were synthesized through hydrothermal method. effects of different concentrations of europium on structural and optical properties of zno nano-sheets were investigated in detail. prepared un-doped and eu-doped zno samples were characterized using x-ray diffraction (xrd), energy dispersive x-ray spectroscopy (edx), scanning electron microscop...

Journal: :Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2007

In this article, the effects of Pr and Nd were investigated on the microstructure and absorption/desorption characteristics of MmNi5 hydrogen storage alloy. The alloys were prepared in Vacuum induction furnace and the microstructures and phases were analyzed using scanning electron microscopy (SEM) equipped with energy dispersive X-ray analysis (EDS) and X-ray diffraction (XRD). Hydrogen absorp...

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2008
Wei Xu Hailong Chen Yanfeng Wang Chuntao Zhao Xiyou Li Shuangqing Wang Yuxiang Weng

Two compounds containing a porphyrin dimer and a perylene tetracarboxylic diimide (PDI) linked by phenyl (1) or ethylene groups (2) are prepared. The photophysical properties of these two compounds are investigated by steady state electronic absorption and fluorescence spectra and lifetime measurements. The ground state absorption spectra reveal intense interactions between the porphyrin units ...

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