POLARIZATION OF STABLE AND RADIOACTIVE NOBLE GAS NUCLEI BY SPIN EXCHANGE WITH LASER PUMPED ALKALI ATOMS

1985 ◽  
Vol 46 (C1) ◽  
pp. C1-261-C1-267
Author(s):  
W. Happer
Keyword(s):  
Spin Exchange ◽  
Noble Gas ◽  
Alkali Atoms

Versuche zur Spinpolarisation der schwereren Elem ente der Stickstoff-Gruppe durch Spinaustausch mit optisch gepumpten Alkalien: Spinpolarisation von 121Sb durch Spinaustausch mit optisch gepumptem 133Cs / Experiments on spin polarization of the heavier Nitrogen group elements by spin exchange with optically pumped alkali atoms: Spin polarization of 121Sb by spin exchange with optically pumped 133Cs

1974 ◽  
Vol 29 (6) ◽  
pp. 947-948
Author(s):  
R. Tilgner ◽  
E. Lüscher
Keyword(s):  
Spin Polarization ◽  
Spin Exchange ◽  
Optically Pumped ◽  
Alkali Atoms ◽  
Uv Lamp

The molecules of a Sb-vapour were dissociated by irradiating them with an UV-lamp. The three outer electrons of the atoms were spinpolarized in a He buffer atmosphere by spin exchange with optically pumped Cs. For the 121Sb-isotope the polarization was monitored by inducing rf-transitions between the Zeeman sublevels of the F=4 hyperfine niveau.

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.

scholarly journals NOBLE GAS, ALKALI AND ALKALINE ATOMS INTERACTING WITH A GOLD SURFACE

2010 ◽  
Vol 25 (11) ◽  
pp. 2337-2344 ◽  
Author(s):  
GRZEGORZ ŁACH ◽  
MAARTEN DEKIEVIET ◽  
ULRICH D. JENTSCHURA
Keyword(s):  
Noble Gas ◽  
Gold Surface ◽  
Perfect Conductor ◽  
Interaction Potentials ◽  
Atomic Systems ◽  
Electromagnetic Interactions ◽  
Alkali Atoms ◽  
Explicitly Correlated ◽  
Realistic Representation ◽  
Dynamic Polarizabilities

The attractive branch of the interaction potentials with the surface of gold have been computed for a large variety of atomic systems: the hydrogen atom, noble gases ( He , Ne , Ar , Kr , Xe ), alkali atoms ( Li , Na , K , Rb , Cs ) and alkaline atoms ( Be , Mg , Ca , Sr , Ba ). The results include highly accurate dynamic polarizabilities for the helium atom calculated using a variational method and explicitly correlated wavefunctions. For other atoms considered we used the data available in the literature. The interaction potentials include both the effects of retardation of the electromagnetic interactions and a realistic representation of the optical response function of gold (beyond the approximation of a perfect conductor). An explicit comparison of our result to the interaction between an atom and a perfect conductor is given.

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