The visible light of argon plasma produced by the electron cyclone resonance ion source (ECRIS) with wavelength from 300 to 900 nm has been detected by Spec-pro 500i, a grating spectrometer. A great amount of the char...The visible light of argon plasma produced by the electron cyclone resonance ion source (ECRIS) with wavelength from 300 to 900 nm has been detected by Spec-pro 500i, a grating spectrometer. A great amount of the character lines were emitted when the arc starting. Most of these lines can be identified and were from argon atom and ions with lower charge states such as 1+, 2+ or 3+. A small fraction of unknown lines was possibly from argon ions with higher charge states which needs to be investigated later. Fig.1 shows part of the results, and the referring lines are compared with the up-to-date data from NIST (the National Institute of Standards and Technology) in Table 1.展开更多
A new aqueous chemical growth method for generation of ZnO flowerlike and spindlelike nanostructures, transformed from layered basic zinc acetate (LBZA) nanobelts, is developed. The novel as-synthesized ZnO flowerlike...A new aqueous chemical growth method for generation of ZnO flowerlike and spindlelike nanostructures, transformed from layered basic zinc acetate (LBZA) nanobelts, is developed. The novel as-synthesized ZnO flowerlike and spindlelike nanostructures are mainly due to the pH. They are characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The X-ray diffraction peaks indicate that these ZnO nanostructures prefer to grow along the C-axis. Photoluminescence (PL) measurements show that the ZnO flowerlike nanostructures have strong ultraviolet (UV) emission properties at 380 nm, while no defect-related visible emission can be detected. The good performance for photoluminescence emission makes the ZnO flowerlike nanostructures to be promising candidates for photonic and electronic device applications.展开更多
文摘The visible light of argon plasma produced by the electron cyclone resonance ion source (ECRIS) with wavelength from 300 to 900 nm has been detected by Spec-pro 500i, a grating spectrometer. A great amount of the character lines were emitted when the arc starting. Most of these lines can be identified and were from argon atom and ions with lower charge states such as 1+, 2+ or 3+. A small fraction of unknown lines was possibly from argon ions with higher charge states which needs to be investigated later. Fig.1 shows part of the results, and the referring lines are compared with the up-to-date data from NIST (the National Institute of Standards and Technology) in Table 1.
基金supported by the National High Technology Research and Development Program of China (Nos.2007AA030112 and2009AA032708)
文摘A new aqueous chemical growth method for generation of ZnO flowerlike and spindlelike nanostructures, transformed from layered basic zinc acetate (LBZA) nanobelts, is developed. The novel as-synthesized ZnO flowerlike and spindlelike nanostructures are mainly due to the pH. They are characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The X-ray diffraction peaks indicate that these ZnO nanostructures prefer to grow along the C-axis. Photoluminescence (PL) measurements show that the ZnO flowerlike nanostructures have strong ultraviolet (UV) emission properties at 380 nm, while no defect-related visible emission can be detected. The good performance for photoluminescence emission makes the ZnO flowerlike nanostructures to be promising candidates for photonic and electronic device applications.
