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2010年10月28日，中国科学院武汉物理与数学研究所科研人员成功拍摄到高空80-110km 钠层人造激光导星。钠激光导星由高性能激光激发80-110 km高空钠原子发出共振荧光，形成一个悬在空中的“人造星星”，对该光源进行探测或成像，可开展大气光学研究，如用于自适应光学大气湍流光学矫正系统，在高清晰天文成像、空间目标识别、激光武器、高速自由空间激光通信等领域有重要应用，是国内外大气光学研究的热点...
Phase stability and structural temperature dependence in sodium niobate: A high resolution powder neutron diffraction study
Phase stability structural temperature dependence high resolution powder neutron diffraction
2010/11/24
We report investigation of structural phase transitions in technologically important material sodium niobate as a function of temperature on heating over 300-1075 K. Our high resolution powder neutron...
Simultaneous aluminum, silicon, and sodium coordination changes in 6 GPa sodium aluminosilicate glasses
NMR aluminosilicate glass high pressure coordination aluminum silicon sodium
2014/4/8
We present the first direct observation of high-coordinated Si and Al occurring together in a series
of high-pressure sodium aluminosilicate glasses, quenched from melts at 6 GPa. Using
29
Si MAS...
Absorption and Recurrence Spectra of Sodium Rydberg Atom in a Strong
External Magnetic Field
closed orbit theory photoabsorption spectra recurrence
spectra core-scattered effects
2007/8/15
2004Vol.42No.5pp.757-762DOI:
Absorption and Recurrence Spectra of Sodium Rydberg Atom in a Strong
External Magnetic Field
WANG De-Hua1 and LIN Sheng-Lu2
1 Department of ...
期刊信息
篇名
Diffraction properties of transmission photorefracive volune gratings in cerium-doped potassium sodium strontium niobate crystal
语种
英文
撰写或编译
作者
Bao lai Liang,Zhaoqi Wang,Guoguang Mu
第一作者单位
刊物名...
Study of the Structure and Some Physical Properties of Sodium-Boro-Phosphate Glasses Containing Antimony and Iron Oxides
Glass structure Physical properties of glass Glass containing antimony and iron oxides
2010/4/13
Boro-phosphate glasses containing transition metal oxides are of special interest. Hence, some sodium-Boro-phosphate glasses containing iron and antimony oxides were prepared and investigated. The str...
Effect of the Oxygen/Halogen Ratio on the Physical Properties of Some Sodium-Boro-Vanadate Glasses
Physical Properties of glass Glass containing halogen ions Glass structure
2010/4/13
Four different glass systems of the sodium boro-vanadate type containing halogen ions, were prepared by melting at 1000°C for three hours and annealed at 300°C. These glasses were investigated using d...