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The energy deposition of intense pulsed ion beam (IPIB) in stainless steel was studied with ion beam generated by a magnetically insulated diode (MID). By taking space charge limitation approximation with Child–Langmuir (C–L) Law, combining with the time-of-flight (TOF) method, the temporal structure of the energy spectrum of IPIB was analyzed. When comparing with the experimental data, the dynamic...
As observed in many studies, craters may appear on the surfaces of metals after irradiation of intense pulsed ion beams (IPIB). These craters limit the utilization of IPIB as a novel method for surface processing in some cases. In this work, taking stainless steel as an example, the hydrodynamic behavior of molten surface formed by IPIB was taken into consideration, by taking IPIB-induced heat transfer...
A two-dimensional calorimetric diagnostic technique with infrared imaging method has been developed. The technique, which enables the measuring of two-dimensional energy density distribution of intense pulsed ion beam (IPIB) and intense pulsed electron beam (IPEB) with particle energy typically of hundreds of keV, is applicable for the diagnostics of IPIB and IPEB for material treatment purpose such...
Er 3+ -doped TiO 2 thin films were prepared by RF magnetron sputtering. The effects of Er 3+ concentration and annealing conditions upon up-conversion fluorescence were studied. The result shows that 490 nm green emission and 670 nm red emission can be obtained from Er 3+ -doped TiO 2 thin films excited by 980 nm lasers. TiO 2 thin films with 1.0 mol%...
Nitrogen-doped titanium dioxide thin films with visible light photoresponse were prepared by oxidation of sputtered TiN x films, whose nitrogen contents can be easily changed by controlling the volume ratio of N 2 /(Ar+N 2 ) during reactive direct current (DC) magnetron sputtering process. The reference TiO 2 sample was also deposited by the same method under Ar/O ...
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