搜索结果: 1-9 共查到“物理学 VUV”相关记录9条 . 查询时间(0.093 秒)
采用高温固相法制备了Cu掺杂天然方钠石光致发光粉末。使用电子探针能谱分析（EDS）和微区分析（EPMA）测出了天然方钠石所含的主要化学成分。用X射线衍射（XRD）研究了Cu掺杂对方钠石结构的影响。室温下测量了真空紫外-紫外-可见光光谱。结果表明，激发光谱中171 nm处的激发带属于基质吸收；202，255，280，290 nm左右的激发带是Cu+离子的3d10→3d94s跃迁引起的。Cu在方钠石晶...
目前，离子迁移谱是现场快速检测痕量爆炸物的主要方法，然而，传统放射性电离源限制了离子迁移谱的推广应用，迫切需要研制开发高电离效率、结构简单、性能稳定的非放射性电离源。
VUV Fourier-transform absorption study of the Lyman and Werner bands in D2
VUV Fourier-transform absorption Lyman and Werner bands D2 Atomic Physics
2012/4/24
An extensive survey of the D2 absorption spectrum has been performed with the high-resolution VUV Fourier-transform spectrometer of the DESIRS beamline at the SOLEIL synchrotron. The frequency range o...
Rare-gas clusters in intense VUV, XUV and soft x-ray pulses: Signatures of the transition from nanoplasma-driven cluster expansion to Coulomb explosion in ion and electron spectra
VUV XUV soft x-ray pulses
2010/11/16
We investigate the wavelength dependent ionization, heating, and expansion dynamics of medium-sized rare-gas clusters (Ar$_{923}$) under intense femtosecond short-wavelength free electron laser pulse...
SrBPO5:Ce3+的VUV光谱
发光 硼磷酸锶 铈 真空紫外光谱
2009/7/3
研究了Ce3+离子激活的SrBPO5在130—400nm波长范围的光谱性质.在VUV激发光谱上指认了Ce3+的5个4f1→4f05d1跃迁激发带.发现在SrBPO5中Ce3+的5d轨道能级重心位于43.2×103cm－1,这在氧化物基质中是比较高的.此外,还报道和讨论了SrBPO5的基质吸收带和Ce3+的5d轨道在SrBPO5中的晶体场劈裂及SrBPO5:Ce3+在VUV-UV激发下的发射光谱.
在真空紫外光激发下,六万结构的NaGdF4:Eu3+中的Gd3+离子吸收一个光子,将能量分两步传递给Eu3+离子,发生红色双光子发射.立方结构的NaGdF4:Eu3+中存在一定量的氧离子取代缺陷,使Gd3+离子4f-5d跃迁移到177nm附近,这与惰性气体放电产生的VUV光波长一致,并且其荧光色纯度较高.在VUV激发下,GdBaB9O16中的Gd3+离子发生双光子(紫外和红色或远红外)发射.
VUV Spectral Line Emission Measurements in the TCABR Tokamak
VUV spectrometry higher diffraction order spectra tokamak ion temperature multi-channel detector
2010/7/5
The study of tokamak plasma light emissions in the vacuum ultraviolet (VUV) region is an important subject since many impurity spectral emissions are present in this region. These spectral emissions c...
采用高温固相反应合成磁铅矿型(Sr, Ba)Al12O19∶RE3+(RE=Ce, Tb)发光材料，X射线衍射结果证明生成单一磁铅矿型结构。Ce3+产生302 nm的发射峰和340 nm左右的不太明显的肩，分别对应于5d→2F5/2和5d→2F7/2跃迁；激发光谱显示两个宽带峰，158 nm峰对应于基质吸收，260 nm峰是由4f-5d跃迁引起的。Tb3+的发射光谱显示特征的5D3→7Fj(j=2...
Photoabsorption and Photoionization Studies of the Amino Acid Proline in the VUV Region
Photoabsorption and Photoionization the Amino Acid Proline the VUV Region
2010/10/15
Ionic fragmentation of the sublimated amino acid DL-proline has been studied using time-of-flight mass spectrometry and synchrotron radiation. Total ion yield and mass spectra were recorded in the 13 ...