نتایج جستجو برای: x ray fluorescence

تعداد نتایج: 760998  

2013
K. M. Dąbrowski P. Korecki

White-beam x-ray fluorescence holograms were recorded using a 50 watt x-ray tube for a Cu3Au single crystal. Element sensitivity for this model sample was explicitly demonstrated by measuring distinct holograms using Cu K and Au L x-ray fluorescence. The phase sensitivity of the recorded holograms enabled us to obtain projections of the local atomic structure and image the electron density with...

2005
W. M. Gibson

A focused beam total X-ray fluorescence technique was developed based on doubly curved crystal optics. This technique provides good detection sensitivity and spatial resolution for localized detection of surface deposits. Compact low power X-ray sources were used to demonstrate the benefit of the X-ray optics for focusing Cr Ka, Cu Ka and Mo Ka radiation. The detection capability of the focused...

Journal: :Current opinion in structural biology 2010
Martin D de Jonge Stefan Vogt

Hard X-ray fluorescence microscopy is well-suited to in-situ investigations of trace metal distributions within whole, unstained, biological tissue, with sub-parts-per-million detection achievable in whole cells. The high penetration of X-rays indicates the use of X-ray fluorescence tomography for structural visualization, and recent measurements have realised sub-500-nm tomography on a 10-μm c...

Journal: :Journal of Physics: Conference Series 2009

Journal: :Environmental Health Perspectives 1993

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