Results 61 to 70 of about 29,739 (303)

Repumping and spectroscopy of laser-cooled Sr atoms using the (5s5p)3P2 - (5s4d)3D2 transition

, 2009
We describe repumping and spectroscopy of laser-cooled strontium (Sr) atoms using the (5s5p)3P2 - (5s4d)3D2 transition. Atom number in a magneto-optical trap is enhanced by driving this transition because Sr atoms that have decayed into the (5s5p)3P2 ...
A J Traverso, B J DeSalvo, Bernath P, M Yan, P Anzel, P G Mickelson, S B Nagel, T C Killian, Y N Martinez de Escobar   +8 more
core   +1 more source

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +1 more source

Setup and Application of Luminescent Property Measuring System for Materials Excited by Radioactive Sources

Journal of Isotopes
Radio-luminescence from radioactive isotopes has important applications in special fields. To accurately measure the luminescence characteristics of luminescent materials in specific light-emitting directions under radioactive source excitation，a ...
Yuqing YANG, Yisong LEI, Yebing LIU, Xiaoling XIONG, Gang LI, Shuming PENG   +5 more
doaj   +1 more source

Degenerate quantum gases of strontium

, 2014
Degenerate quantum gases of alkaline-earth-like elements open new opportunities in research areas ranging from molecular physics to the study of strongly correlated systems. These experiments exploit the rich electronic structure of these elements, which
Killian, Thomas C., Schreck, Florian, Stellmer, Simon   +2 more
core   +1 more source

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

Advanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost, Lionel Presmanes, Soléna Colin, Marie Vidal, Sophie Guillemet‐Fritsch   +4 more
wiley   +1 more source

Recent Advances Concerning the ⁸⁷Sr Optical Lattice Clock at the National Time Service Center

Applied Sciences, 2018
We review recent experimental progress concerning the 87Sr optical lattice clock at the National Time Service Center in China. Hertz-level spectroscopy of the 87Sr clock transition for the optical lattice clock was performed, and closed-loop operation of
Yebing Wang, Xiaotong Lu, Benquan Lu, Dehuan Kong, Hong Chang   +4 more
doaj   +1 more source

Ultracold Neutral Plasmas

, 2004
Ultracold neutral plasmas are formed by photoionizing laser-cooled atoms near the ionization threshold. Through the application of atomic physics techniques and diagnostics, these experiments stretch the boundaries of traditional neutral plasma physics ...
A D Saenz, C E Simien, Killian T C, Killian T C, Metcalf H J, Morozov I V, P G Mickelson, P Gupta, Pohl T, Pohl T Pattard T Rost J M, S B Nagel, S Laha, Siegman A E, T C Killian, Van Horn H M, Y C Chen, Y N Martinez, Zwicknagel G   +17 more
core   +1 more source

Interaction of Ladle Slag With Varying SiO2 Content and Recyclate‐Based MgO–C Refractories

Advanced Engineering Materials, EarlyView.
Ladle slags (CaO/Al2O3 = 1) with 1–20 wt% SiO2 were investigated in contact with industrial MgO–C refractories fabricated from fresh magnesia and 50 wt% recyclate. The sessile drop method at 1600°C reveals intensive gas formation, delayed slag infiltration in recyclate‐based samples, and, under high‐SiO2 slag, formation of a dense MgAl2O4‐rich ...
Anton Yehorov, Eldar Salpagarov, Anhelina Mospan, Till Manon Jannis Stadtmüller, Thomas Schemmel, Christos Georgios Aneziris, Olena Volkova   +6 more
wiley   +1 more source

Optical pumping of 5s4d^{1}D_{2} strontium atoms for laser cooling and imaging

Physical Review Research
We present a faster repumping scheme for strontium magneto-optical traps operating on the broad 5s^{2}^{1}S_{0}−5s5p^{1}P_{1} laser cooling transition. Contrary to existing repumping schemes, we directly address lost atoms that spontaneously decayed to ...
Jens Samland, Shayne Bennetts, Chun-Chia Chen (陳俊嘉), Rodrigo González Escudero, Florian Schreck, Benjamin Pasquiou   +5 more
doaj   +1 more source

Monte-Carlo simulations of superradiant lasing

New Journal of Physics, 2018
We simulate the superradiant dynamics of ensembles of atoms in the presence of collective and individual atomic decay processes. We apply the Monte-Carlo wave-function method and identify quantum jumps in a reduced Dicke state basis, which reflects the ...
Yuan Zhang, Yu-Xiang Zhang, Klaus Mølmer   +2 more
doaj   +1 more source