![]() ![]() The radioactive isotope cesium-3 is often used in X-ray irradiation for cancer treatment. ![]() Laboratories use cesium compounds for various functions in organic chemistry, such as the hydrogenation of organic compounds or, in the case of cesium fluoride, as a source of the fluorine anion. Oxygen-free metallic cesium can also be produced by the thermal decomposition of cesium azide (CsN45). The primary commercial source of metallic cesium is the mining of pollucite, while cesium radioisotopes are produced from waste from nuclear reactors. Bunsen and Kirchhoff gave the new element a name based on the Latin word Caesius (sky or celestial blue) for the two bright blue lines in its spectrum.Ĭesium is the most abundant element on earth and is found in the minerals pollucite, avogadrite, pezzottaite, londonite, rhodicite, beryl and some potassium ores. Cesium was also the first spectroscopically discovered element of the German scientists Robert Bunsen and Gustav Kirchhoff, who had invented the technology last year. Only one of the known isotopes of cesium is stable (133Cs), but with its 39 isotopes it is associated with xenon, the two elements with the largest amount of known isotopes. Mercury is the only element with a lower melting point. Cesium melts at 28 ° C, making it one of three elements (the others are gallium and mercury) that are liquid at or near room temperature. The heaviest of the stable alkali metals, cesium, has a silvery-golden appearance, is ductile and, with 0,2 on the Mohs scale, the softest element in the periodic table. Although cesium is only mildly toxic, it is considered hazardous because of its high reactivity and is usually packaged in glass ampoules in vacuo or under an inert gas such as argon. THE CONTRIBUTION OF THE ELECTRONIC POLARIZATION TO THE ELASTIC AND PIEZOELECTRIC CONSTANTS AND THE DIELECTRIC TENSOR FOR THE CALCIUM FLUORIDE CRYSTAL.With an electron in the sixth and outermost shell, cesium is the most electropositive of all stable elements in the periodic table: the metal is extremely pyrophoric, ignites spontaneously when in contact with air, and explodes violently in water or ice at any temperature above -116 ° C. SUN CHIA-CHUNG, CHIANG TUNG-CHEN, CHOU MO-YI, SHI AN-TON. MEASUREMENT OF THE DIELECTRIC CONSTANTS AND THE PERMEABILITIES OF MICROWAVE FERRITES. Acta Physica Sinica, RELAXATION BEHAVIORS OF THE DEPOLARIZATION CURRENT AND THE APPARENT DIELECTRIC CONSTANT OF α-LiIO 3 SINGLE CRYSTALS. Acta Physica Sinica, INFLUENCE OF Ag CONTENT ON OPTICAL PROPERTIES OF Ag-Cs2O THIN FILMS. Acta Physica Sinica, Xie Bin, Su Fang, Wang Wen-Lou. Acta Physica Sinica, Liu Fu-De, Ling Zhi-Yuan, Xiong Mao-Ren. Acta Physica Sinica, Su Fang, Xie Bin, Zhao Ming-Wen, Wu Xi-Jun. Acta Physica Sinica, High dielectric constant in CaCu3Ti4O12 bulk an d thin films. Acta Physica Sinica, Zhao Yan-Li, Jiao Zheng-Kuan, Gao Guang-Han. Non-ferroelectric single crystal of ultra-high dielectric constant. Acta Physica Sinica, Characterization and bonding configuration of SiCOH low-k films. Acta Physica Sinica, Wang Ting-Ting, Ye Chao, Ning Zhao-Yuan, Cheng Shan-Hua. Determination of the optical constants of porous anodic aluminum oxide films. Acta Physica Sinica, Wang Cheng-Wei, Wang Jian, Li Yan, Liu Wei-Min, Xu Tao, Sun Xiao-Wei, Li Hu-Lin. Effect of CH4-doping on configuration and dielectric properties of SiCOH low-k films. Acta Physica Sinica, Yu Xiao-Zhu, Wang Ting-Ting, Ye Chao, Ning Zhao-Yuan. The transmission properties of pairing structure of negative permittivity and negative permeability materials. Acta Physica Sinica, H-shaped structure of left-handed metamaterials with simultaneous negative permittivity and permeability. Acta Physica Sinica,ĭong Li-Juan, Jiang Hai-Tao, Yang Cheng-Quan, Shi Yun-Long. ![]() Liu Ya-Hong, Luo Chun-Rong, Zhao Xiao-Peng. Thermal stability of structure and properties of CHx doped SiCOH low dielectric constant films. Acta Physica Sinica, Dielectric and impedance performances of giant dielectric constant oxide CaCu3Ti4O12. Acta Physica Sinica,ĭu Jie, Ye Chao, Yu Xiao-Zhu, Zhang Hai-Yan, Ning Zhao-Yuan. Luo Xiao-Jing, Yang Chang-Ping, Song Xue-Ping, Xu Ling-Fang. Influence of air exposure on the structure and properties of cesium iodide film. Acta Physica Sinica, Gaussian oscillator model of the dielectric constant of SiO2 thin film in infrared range. Acta Physica Sinica,įan Long, Yang Zhi-Wen, Chen Tao, Li Jin, Li Yu-Kun, Cao Zhu-Rong. Liu Hua-Song, Yang Xiao, Wang Li-Shuan, Jiang Cheng-Hui, Liu Dan-Dan, Ji Yi-Qin, Zhang Feng, Chen De-Ying. Enhanced photonic spin Hall effect due to controllable permittivity of alloy film. Acta Physica Sinica, Wan Ting, Luo Zhao-Ming, Min Li, Chen Min, Xiao Lei. ![]() Enhanced nonlinear optical effects based on strong coupling between epsilon-near-zero mode and gap surface plasmons. Acta Physica Sinica, ![]()
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