Results 71 to 80 of about 841,302 (182)
Wavelength dependent ac-Stark shift of the 1S0 - 3P1 transition at 657 nm in Ca
, 2004 We have measured the ac-Stark shift of the 4s2 1S0 - 4s4p 3P1 line in 40Ca for perturbing laser wavelengths between 780 nm and 1064 nm with a time domain Ramsey-Borde atom interferometer.
A.R. Edmonds +11 more
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Gaoya dianqi, 2007 介绍了直流输电工程采用的直流滤波器的类型与构成,分析了±800 kV特高压直流输电工程换流器在直流侧产生的谐波的特点,并与±500 kV高压直流输电工程做了比较。以实际的±800 kV特高压直流输电工程为例,对换流器在直流线路上产生的等效谐波干扰电流进行了计算,对不同直流滤波器设置方案下的滤波效果进行了比较,并以计算结果为依据提出了较为合理的±800 kV特高压直流输电工程直流滤波器设置方案,为最终确定实际工程直流滤波器方案具有一定的参考作用。
张万荣, 任军辉, 王蔚华
doaj
Response of Multi-strip Multi-gap Resistive Plate Chamber
, 2015 A prototype of Multi-strip Multi-gap Resistive Plate chamber (MMRPC) with active area 40 cm $\times$ 20 cm has been developed at SINP, Kolkata. Detailed response of the developed detector was studied with the pulsed electron beam from ELBE at Helmholtz ...
Basu, J. +14 more
core +1 more source
, 2010 Selection of "magic" trapping conditions with ultracold atoms or molecules, where pairs of internal states experience identical trapping potentials, brings substantial benefits to precision measurements and quantum computing schemes.
DeMille, David, Kotochigova, Svetlana
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Dianci bileiqi, 2016 目前±1 100 kV特高压直流系统还没有工程实际,但直流电压由±800 kV提高到±1100 kV后,±1 100 kV直流换流站直流场防雷可能会面临一些新问题。例如线路进线段杆塔比±800 kV更高,绕击和反击电流会更大,导致直流换流站直流场雷电侵入波过电压也会更高,而受设备制造、运输能力和高度的限制,换流站设备的内外绝缘水平并不是按比例线性增大的,这样对±1 100 kV直流换流站直流场的避雷器布置和保护水平提出了更严格的要求。本文依托准东-重庆±1 100 kV直流输电工程 ...
万磊, 范冕, 何慧雯
doaj
Vibration Model of ±800 kV Converter Transformers Under Varying Load Conditions
EnergiesUnderstanding the relationship between current harmonics and vibration is crucial for accurately modeling converter transformer vibrations, particularly under varying load conditions. In this study, vibrations of six converter transformers were monitored
Ning Wang, Jing Zheng, Yao Yuan
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Simulation of gain stability of THGEM gas-avalanche particle detectors
, 2017 Charging-up processes affecting gain stability in Thick Gas Electron Multipliers (THGEM) were studied with a dedicated simulation toolkit. Integrated with Garfield++, it provides an effective platform for systematic phenomenological studies of charging ...
Azevedo, C. D. R. +8 more
core +1 more source
, 2005 Terahertz (THz) radiation has been observed from multiferroic BiFeO$_3$ thin films via ultrafast modulation of spontaneous polarization upon carrier excitation with illumination of femtosecond laser pulses.
Kida, Noriaki +2 more
core +1 more source
Gaoya dianqi, 2006 由发电机出线直接升压到800 kV的变压器将在西北地区首次采用。该文将结合拉西瓦工程设计的要求,对一系列的技术问题加以研究与分析。根据工程设计和研究结果,变压器将采用三相组单相变压器,铁心采用三柱式,电压调压范围为800/!3-3×2.5%kV。由于GIS的断路器和隔离开关均设置分合闸电阻,使GIS产生的快速暂态过电压（VFTO）对变压器绝缘影响较小,以及我国800 kV系统过电压的限制水平,确定它的绝缘耐受能力。
阮全荣, 施围
doaj