Simultaneous Determination of the Spin Polarizations of Noble-Gas and Alkali-Metal Atoms Based on the Dynamics of the Spin Ensembles

2020 ◽  
Vol 13 (4) ◽  
Author(s):  
Kai Wei ◽  
Tian Zhao ◽  
Xiujie Fang ◽  
Hairong Li ◽  
Yueyang Zhai ◽  
...  
1998 ◽  
Vol 47 (7) ◽  
pp. 389-395 ◽  
Author(s):  
Toshimitsu OKAMOTO ◽  
Kazuo TAKAYAMA ◽  
Masaru IKEDA ◽  
Hisomu NAGASHIMA

2020 ◽  
Vol 10 (20) ◽  
pp. 7099
Author(s):  
Susan S. Sorensen ◽  
Daniel A. Thrasher ◽  
Thad G. Walker

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.


1984 ◽  
Vol 29 (6) ◽  
pp. 3092-3110 ◽  
Author(s):  
W. Happer ◽  
E. Miron ◽  
S. Schaefer ◽  
D. Schreiber ◽  
W. A. van Wijngaarden ◽  
...  

1989 ◽  
Vol 39 (3) ◽  
pp. 1526-1529 ◽  
Author(s):  
R. W. Berends ◽  
W. Kedzierski ◽  
W. E. Baylis ◽  
L. Krause

1974 ◽  
Vol 10 (4) ◽  
pp. 1131-1140 ◽  
Author(s):  
Robert W. Molof ◽  
Henry L. Schwartz ◽  
Thomas M. Miller ◽  
Benjamin Bederson

2007 ◽  
Vol 76 (3) ◽  
pp. 607-611 ◽  
Author(s):  
Artur Stasikowski ◽  
Marek Moneta ◽  
Tomasz M. Gwizdałła

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