نتایج جستجو برای: pixe
تعداد نتایج: 469 فیلتر نتایج به سال:
The TIARA facilities of JAEA in Takasaki is equipped with a several-MeV light-ion and a several-dozen-MeV heavy-ion microbeam formation systems of focusing type, and a several-hundred-MeV heavy-ion microbeam formation system of collimating type. The microbeams with a spot size of 1 μm or less in diameter are extensively utilized for the research in materials science and biotechnology. An in-air...
Abstract In this work, we tested a setup of X-ray fluorescence (XRF) excited by proton-induced quasi-monochromatic X-rays (proton-induced XRF (PIXRF)) as low-radiation dose analytical technique for precious cultural heritage samples. The low-dose performance the PIXRF is experimentally assessed in comparison with conventional XRF. For assessment, prepared test samples, which simulated original ...
An experimental setup used at the CENTA (Centre for Nuclear and Accelerator Technologies) laboratory to carry out IBA (Ion Beam Analysis) techniques is described. PIXE (Particle Induced X-ray Emission) technique offers a unique way of non-destructive elemental analysis using accelerated ion beams. The calibration instrumental constants (H-values) SDD BEGe detectors, in setup, described detail. ...
Supporting the knowledge of artworks, past times and civilizations by physics and, in general, sciences have been now recognised to be a very valuable possibility, even though scientific measurements cannot definetely replace historical archaeological studies. In this framework, small particle accelerators, i.e., low voltage electrostatic systems, can play an important role for both material an...
Five layers of GaAs:Te(n=2x 1018 cm' Alo.4GaQ.6As: Sn(n=5xWI6 em,3}. GaAs, Alo .• GaQ.6As: Ge(p=3xW17 em-3), GaM: GC(p= IXlO18cm 3) were grown by supercooled Liquid Phase Epilaxy on n-GaAs(IOO) substrate. The cooling rate of the furnace was SCI up With U. I"C/min al T=860°C. The firSI layer was grown at T=840°C and Ihe la sl one at T=827°C. The thi ckness were varied between 0.1 10 8,um b...
Imaging the morphology of the tissue in vivo and producing the correspondent elemental maps, whether in major, minor, or trace concentrations in real-time can be done using a focused beam of accelerated particles. This can be accomplished using different ion beam techniques simultaneously such as Scanning transmission ion microscopy (STIM), secondary electron imaging (SEI), Rutherford backscatt...
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