Results 51 to 60 of about 48,580 (193)

Collimated, single-pass atom source from a pulsed alkali metal dispenser for laser-cooling experiments

, 2004
We have developed an improved scheme for loading atoms into a magneto-optical trap (MOT) from a directed alkali metal dispenser in < 10^-10 torr ultra-high vacuum conditions.
Dan M. Stamper-Kurn, Kater W. Murch, Kevin L. Moore, Ramsey N. F., Roach T. M., Sabrina Leslie, Subhadeep Gupta, Thomas P. Purdy   +7 more
core   +1 more source

Improved Electrogeometric Model of UHV Transmission Line Based on Long Gap Discharge and Its Application

Frontiers in Energy Research, 2022
Based on long air gap discharge test data and lightning return stroke observation data, an improved electrogeometric model (EGM) considering terrain conditions is established and verified to analyze the lightning shielding performance of UHV transmission
Yuanchao Hu, Minghao Yang, Lu Qu, Yunzhu An, Jing Wang, Yan Cheng, Xiao Sha, Qingchen Wang, Chenghui Ma, Bingchen An, Dan Chen   +10 more
doaj   +1 more source

Classification of Light-Induced Desorption of Alkali Atoms in Glass Cells Used in Atomic Physics Experiments

, 2006
We attempt to provide physical interpretations of light-induced desorption phenomena that have recently been observed for alkali atoms on glass surfaces of alkali vapor cells used in atomic physics experiments.
A. Gozzini, F. Mango, J. H. Xu, G. Alzetta, F. Maccarrone, R. A. Bernheim, A. Hatakeyama, K. Enomoto, N. Sugimoto, T. Yabuzaki, A. Hatakeyama, K. Enomoto, T. Yabuzaki, Atsushi Hatakeyama, AUBIN S., B. P. Anderson, M. A. Kasevich, B. V. Yakshinskiy, T. E. Madey, D. Domí, E. B. Alexandrov, M. V. Balabas, D. Budker, D. English, D. F. Kimball, C.-H. Li, V. V. Yashchuk, J. Brewer, V. G. Bordo, M. J. Kasprowicz, H.-G. Rubahn, K. Nakagawa, Y. Suzuki, M. Horikoshi, J. B. Kim, Katsuyuki Fukutani, Markus Wilde, S. Du, M. B. Squires, Y. Imai, L. Czaia, R. A. Saravanan, V. Bright, J. Reichel, T. W. Hä, S. N. Atutov, R. Calabrese, V. Guidi, B. Mai, A. G. Rudavets, E, Scansani, L. Tomassetti, V. Biancalana, A. Burchianti, C. Marinelli, E. Mariotti, L. Moi, S. Veronesi, T. Jacob, D. Martin, F. Stietz, F. Trä, YAKSHINSKIY B V   +16 more
core   +1 more source

The influence mechanism of leakage inductance and distributed capacitance on nanosecond pulse transformer-type trigger

AIP Advances
The pulse trigger generator exerts a significant impact on the Marx generator’s output pulse (OP). In this paper, a pulse transformer (PT)-type trigger device is intended to give a pulse of front steepness below 30 ns, a half-width of more than 300 ns ...
Pengfei Lu, Hongshun Liu, Yifan Wang, Luyao Liu, Kuo Yan, Wei Jia, Ali Mohammed Ali Abdo   +6 more
doaj   +1 more source

Hybrid Model of Power Transformer Fault Classification Using C-set and MFCM – MCSVM

CSEE Journal of Power and Energy Systems
This paper aims to increase the diagnosis accuracy of the fault classification of power transformers by introducing a new off-line hybrid model based on a combination subset of the et method (C-set) & modified fuzzy C-mean algorithm (MFCM) and the
Ali Abdo, Hongshun Liu, Yousif Mahmoud, Hongru Zhang, Ying Sun, Qingquan Li, Jian Guo   +6 more
doaj   +1 more source

X-ray photoemission spectroscopy of La(0.67)Ca(0.33)MnO(3) films

, 1997
We have performed x-ray photoemission spectroscopy (XPS) on thin films of (001) and (200) oriented La(0.67)Ca(0.33)MnO(3) grown on (100) and (110) SrTiO(3) substrates by off-axis sputtering. The films were examined by XPS without exposing them to air. We
P.R Broussard, S.B Qadri, V.C Cestone, V.M Browning   +3 more
core   +1 more source

Fault section identification method for the UHV GIL-overhead hybrid line

The Journal of Engineering, 2019
GIL-overhead hybrid transmission line is an essential way for UHV waters crossing power transmission over long distance in china. The fault section identification of the UHV GIL-overhead hybrid line is a previous work for the protection selective ...
Botong Li, Tianfeng Gu, Zhongqing Li, Bin Li   +3 more
doaj   +1 more source

Atomic-scale structure of the SrTiO3(001)-c(6x2) reconstruction: Experiments and first-principles calculations [PDF]

, 2007
The c(6x2) is a reconstruction of the SrTiO3(001) surface that is formed between 1050-1100oC in oxidizing annealing conditions. This work proposes a model for the atomic structure for the c(6x2) obtained through a combination of results from transmission
Asta, M., Erdman, N., Kazimirov, A., Landree, E., Lanier, C. H., Marks, L. D., Poeppelmeier, K. R., van de Walle, A., Warschkow, O., Zegenhagen, J.   +9 more
core   +2 more sources

A Transformer Condition Assessment Method Based on Combined Deep Neural Network

CSEE Journal of Power and Energy Systems
Dissolved gas analysis (DGA) occupies an extremely important position in transformer condition assessment, and many conventional methods have been proposed based on dissolved gas in oil analysis.
Hongru Zhang, Fuqiang Ren, Jingjing Yang, Zhaoyang Kang, Qingquan Li, Hongshun Liu   +5 more
doaj   +1 more source

Study on partial discharge and charge accumulation characteristics of oil‐pressboard insulation under DC superimposed harmonic voltage

High Voltage, 2023
The oil‐pressboard insulation on the valve side of the converter transformer withstands pulsating square wave voltage. The voltage contains lots of DC components and high‐order harmonics, which is likely to cause insulation failures.
Shuqi Li, Qiang Wang, Dongxin He, Liangkai Wang, Qingquan Li, Wen Si   +5 more
doaj   +1 more source