Shaped Ultrafast Optical Pumping for NMR Applications
· using nuclear magnetic resonance and for sensitive spectroscopic measurements. Unfortu-nately for liquids, the polarization of such systems is terribly small{O(10 5). Continuous Wave (CW) optical pumping can increase the polarization of simple systems. For su ciently complicated molecules, determining a pumping scheme analytically is intractable.
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Measuring Optical Pumping of Rubidium Vapor
· clear angular momentum. The nuclear angular momen-tum quantum numbers for 85Rb and 87Rb are i= 5 2 and i= 3 2, respectively[2]. When combining jand ito de-termine the possible values for f, we nd that for 85Rb, f= 2;3 and that for 87Rb, f= 1;2. The g-factors found using equations (2) and (1) are 1 3 for 85Rb and 1 2 for 87Rb. 1.2. Optical Pumping
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OPTICAL PUMPING - galileo.phys.ia.edu
Optical pumping is a technique for producing spin alignment in a gas of suitable atoms. Circularly polarized light is applied at the frequency of an electronic transition from the ground state, causing transitions to an excited state. Each photon absorbed adds one quantum of angular momentum in the direction of the axis of the light beam to the ...
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【】Optical pumping of ...
· » » 【】Optical pumping of nuclear spins in diamond and GaAs 【】Optical pumping of nuclear spins in diamond and GaAs ： 14:27:00 ： ...
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Optical pumping for investigation of nuclear properties of ...
Optical Pumping (OP) is an efficient technique to produce oriented nuclei by absorption of polarized light by atoms. With the advent of tunable lasers, both resolution and sensitivity of the OP technique has greatly increased. The optically induced nuclear orientation produces changes in the angular distribution of nuclear emissions. The β-asymmetry or γ-anisotropy of the …
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Optical Pumping - University of British Columbia
· using optical pumping, and we will do that in this lab. 1 Prelab I 1.1 Rubidium's atomic energy level structure Rubidium in its atomic state has just one valence electron and can be well approximated by a one-electron-atom model. Its nuclear properties are dif-ferent from Hydrogen, however, and this will give it a different energy-level ...
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OPTICAL PUMPING OF RUBIDIUM VAPOR Introduction A …
· Optical Pumping 5 where Ehf = A(I +1=2) is the zero-magnetic field hyperfine splitting and we have ignored a small effect due to nuclear magnetic moment, see Ref. 2. The hyperfine energy splitting at zero magnetic field is Ehf = 3036 MHz for 85Rb and Ehf = 6835 MHz for 87Rb. Optical pumping The transition rules for the 5s Rb electron are similar to those …
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Optical pumping of Si nuclear spins in bulk silicon at ...
· Optical pumping of 29Si nuclear spins in bulk silicon at high magnetic field and liquid helium temperature Anne S. Verhulst,* Ileana G. Rau, and Yoshihisa Yamamoto† Quantum Entanglement Project, ICORP, JST, E.L. Ginzton Laboratory, Stanford University, Stanford, California 94305-4088, USA
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Optical pumping and spectroscopy of Cs vapor at high ...
· Optical pumping can produce high nuclear polarization in the Cs vapor due to perturbations of the hyperfine interaction during collisions with buffer-gas particles and depending on the pumping transition, radiation trapping can strongly influence the electronic and nuclear polarizations in the
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Optical Pumping - an overview | ScienceDirect Topics
Optical pumping had already been successfully applied to vapors of AMs and mercury to polarize the electronic and nuclear magnetic moments of such atoms [163], but it was not until 1960 that the technique was applied to the electronic 4 He 2 3 …
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Optical Pumping - University of Michigan
· Physics441/2 Optical Pumping 3 K =5/2 and 87Rb with K =3/2.The j =1/2 rubidium ground states for the two isotopes are split by the hyperfine interaction into doublets with F = K±1/2.The hyperfine interaction is the magnetic interaction of the nu-
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Effective collinear optical pumping for nuclear spin ...
By numerically solving the density matrix equations, we show that the laser frequency ramping method by means of position-dependent Zeeman splitting can efficiently polarize nuclear spin of atoms/ions in an accelerator beamline. This minimizes a quantum phenomenon, coherent population trapping, which limits the optical pumping efficiency in the polarized beamline for …
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OPT - Optical Pumping
· Observe di erent resonances for the two rubidium isotopes, 85Rb and 87Rb, and determine their nuclear spin Measure the ambient magnetic eld in the experimental apparatus Observe zero- eld transitions Observe Rabi oscillations Measure timescales for optical pumping
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Optical Pumping - TeachSpin
Optical Pumping is a widely used and powerful technique for exploring atomic energy states, atomic transitions, and atomic collisions using electromagnetism in the form of light, radio frequency, and uniform constant magnetic fields. TeachSpin's Optical Pumping apparatus explores the atomic physics of both isotopes of natural rubidium.
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Optical Pumping in 85Rb and 87 - University of San Diego
· the discovery and development of optical pumping. His work helped better understand the nuclear magnetic moment associated with the atom. Rubidium is the ideal atom for optical pumping because it has one valence electron. This makes it very similar to a hydrogen atom. The energy transitions associated with this experiment will be 2S 1=2 to 2P 1=2.
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Optical Pumping - MIT
· A. Kastler discovered optical pumping in the 1950's and received the Nobel Prize for his work in 1966. In this experiment you will explore the phenomenon of op-tical pumping and its application to fundamental mea-surements in atomic and nuclear physics with equipment originally built for the Junior Lab shortly after the pub-
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Optical Pumping on Rubidium - University of San Diego
· Optical Pumping on Rubidium E. Lance (Dated: March 27, 2011) By means of optical pumping the values of g f and nuclear spin for Rubidium were determined. For Rb85 g f was found to be .35. For Rb 87 g f was found to be .50. The nuclear spin for Rb 85 was found to be 2.35 with a theoretical value of 2.5, for Rb87 the nuclear spin was found to be ...
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Optical Pumping in Solid State Nuclear Magnetic …
· An important current trend in solid state nuclear magnetic resonance (NMR) is the growing exploitation of optical pumping of nuclear spin polarizations as a means of enhancing and localizing NMR signals. Recent work has been concentrated in two areas, namely optically pumped NMR in semiconductors and optical pumping of noble gases. Progress in these two …
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Electron spin dephasing and optical pumping of nuclear ...
· It increases drastically when an external magnetic field as small as 10 mT is applied. We extract a dispersion of the nuclear hyperfine field δ B n ∼ 4 mT, in agreement with calculations. We also demonstrate for the first time in GaN-based systems the optical pumping of nuclear spin yielding the buildup of a significant nuclear polarization.
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Optical pumping of Rubidium - High Energy Physics
· Optical Pumping of Rubidium Advanced Laboratory, Physics 407 University of Wisconsin Madison, WI 53706 Abstract A Rubidium high-frequency lamp is used as the pumping light source to excite Rubidium atoms in a sample cell. The pumping source light is filtered to transmit the D1 Rb line and polarizers are used to produce circular polarization.
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OPTICAL PUMPING OF RUBIDIUM - Department of Physics
· Optical pumping is the basis of all lasers; it is an important tool for studying collision and : y ... The nuclear spin is denoted by I, the interaction is again of the form p~, and the result is a Mer splitting of the energy levels called the Hyperfine Structure. This energy can be
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RB Optical Pumping in Rubidium - University of Toronto
· F is determined and hence the nuclear spin. In the method used, the technique of "optical pumping" produces a non equilibrium distribution of atoms among the Zeeman sublevels of the atomic ground state. A Magnetic resonance experiment is then performed to measure the frequency (energy) difference between adjacent sublevels. INTRODUCTION
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