First-principles dynamics treatment of light emission in collisions between alkali-metal atoms and noble-gas atoms at10keV

2006 ◽  
Vol 74 (6) ◽  
Author(s):  
Alexander B. Pacheco ◽  
Andrés Reyes ◽  
David A. Micha
Keyword(s):  
Alkali Metal ◽  
First Principles ◽  
Light Emission ◽  
Noble Gas ◽  
Metal Atoms

Alkali Metal and Alkaline Earth Encapsulated Silicene-Like Nanotubes

2011 ◽  
Vol 320 ◽  
pp. 410-414 ◽  
Author(s):  
Chuan Hui Zhang ◽  
Qiong Ran ◽  
Jiang Shen
Keyword(s):  
Electronic Structure ◽  
Alkali Metal ◽  
Band Gap ◽  
Electronic Properties ◽  
Structural Stability ◽  
Structure Analysis ◽  
First Principles ◽  
Alkaline Earth ◽  
Experimental Studies ◽  
Metal Atoms

The structural stability and electronic properties of silicene-like nanotubes by metal atoms encapsulated were studied by first-principles. The calculations demonstrate that all the structures of nanotubes are stable, expect beryllium doped. Some nanotubes are semiconductor with small value of band gap while others are conductor, because the interaction and hybridizations decrease the band gap. Our electronic structure analysis shows that metal atoms gain electrons and Si atoms lose electrons as a whole, some electrons transferred from Si to metal atoms. We hope that our calculations will provide help to further experimental studies.

scholarly journals A Synchronous Spin-Exchange Optically Pumped NMR-Gyroscope

2020 ◽  
Vol 10 (20) ◽  
pp. 7099
Author(s):  
Susan S. Sorensen ◽  
Daniel A. Thrasher ◽  
Thad G. Walker
Keyword(s):  
Alkali Metal ◽  
Noble Gases ◽  
Spin Exchange ◽  
Noble Gas ◽  
Navigation Systems ◽  
Optically Pumped ◽  
Orientation Measurement ◽  
Metal Atoms ◽  
Optically Pumped Nmr ◽  
Measurement Units

Inertial navigation systems generally consist of timing, acceleration, and orientation measurement units. Although much progress has been made towards developing primary timing sources such as atomic clocks, acceleration and orientation measurement units often require calibration. Nuclear Magnetic Resonance (NMR) gyroscopes, which rely on continuous measurement of the simultaneous Larmor precession of two co-located polarized noble gases, can be configured to have scale factors that depend to first order only on fundamental constants. The noble gases are polarized by spin-exchange collisions with co-located optically pumped alkali-metal atoms. The alkali-metal atoms are also used to detect the phase of precession of the polarized noble gas nuclei. Here we present a version of an NMR gyroscope designed to suppress systematic errors from the alkali-metal atoms. We demonstrate rotation rate angle random walk (ARW) sensitivity of 16μHz/Hz and bias instability of ∼800 nHz.

Adsorption of alkali metal atoms on germanene: A first-principles study

2014 ◽  
Vol 314 ◽  
pp. 15-20 ◽  
Author(s):  
Qing Pang ◽  
Chun-ling Zhang ◽  
Long Li ◽  
Zhi-qiang Fu ◽  
Xiu-mei Wei ◽  
...  
Keyword(s):  
Alkali Metal ◽  
First Principles ◽  
First Principles Study ◽  
Metal Atoms

Polarization of the nuclear spins of noble-gas atoms by spin exchange with optically pumped alkali-metal atoms

1984 ◽  
Vol 29 (6) ◽  
pp. 3092-3110 ◽  
Author(s):  
W. Happer ◽  
E. Miron ◽  
S. Schaefer ◽  
D. Schreiber ◽  
W. A. van Wijngaarden ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Spin Exchange ◽  
Noble Gas ◽  
Nuclear Spins ◽  
Optically Pumped ◽  
Metal Atoms

First-principles simulations on the new hybrid phases of germanene with alkali metal atoms coverage

2016 ◽  
Vol 360 ◽  
pp. 707-714 ◽  
Author(s):  
Jianmei Yuan ◽  
Chan Tang ◽  
Jianxin Zhong ◽  
Yuliang Mao
Keyword(s):  
Alkali Metal ◽  
First Principles ◽  
Metal Atoms

Monolayer GaN functionalized with alkali metal and alkaline earth metal atoms: A first-principles study

2019 ◽  
Vol 130 ◽  
pp. 428-436 ◽  
Author(s):  
Keat Hoe Yeoh ◽  
Tiem Leong Yoon ◽  
Thong Leng Lim ◽  
Rusi ◽  
Duu Sheng Ong
Keyword(s):  
Alkali Metal ◽  
First Principles ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
First Principles Study ◽  
Metal Atoms
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