Journal ArticleDOI
Effective collinear optical pumping for nuclear spin polarization
Reads0
Chats0
TLDR
By numerically solving the density matrix equations, the laser frequency ramping method by means of position-dependent Zeeman splitting can efficiently polarize nuclear spin of atoms/ions in an accelerator beamline as discussed by the authors.Abstract:
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 radioactive nuclear spin polarization. We consider the Li8 atomic system interacting with two circularly polarized laser beams in the presence of time-dependent magnetic field. From numerical results, we find that optimum frequency ramping allows efficient optical pumping for a short interaction time, e.g., 2 μs.read more
Citations
More filters
Journal ArticleDOI
Optical pumping schemes for nuclear spin polarization of Ar 35
TL;DR: In the case of argon-35 atoms, this article showed that polarization degrees as high as 99.99% can be obtained within less than 140 ε-ensuremath{mu{s} s.
References
More filters
Journal ArticleDOI
Laser production of large nuclear-spin polarization in frozen xenon.
TL;DR: The potential for accumulating large samples with even higher polarizations makes laser-polarized Xe ice promising for a wid variety of new experiments.
Journal ArticleDOI
Optical pumping with two finite linewidth lasers
P. Tremblay,C. Jacques +1 more
TL;DR: A new theoretical model is presented to evaluate the pumping efficiency of two-laser pumping schemes, taking into account optical, ground and excited states hyperfine and Zeeman coherences, neighboring transitions, and fluctuating laser fields.
Journal ArticleDOI
Low-energy spin-polarized radioactive beams as a nano-scale probe of matter
R. F. Kiefl,R. F. Kiefl,W. A. MacFarlane,W. A. MacFarlane,G.D. Morris,P. Amaudruz,Donald J. Arseneau,H. Azumi,Richard Baartman,T. R. Beals,T. R. Beals,John Behr,C. Bommas,Jess H. Brewer,Kim H. Chow,E. Dumont,S. R. Dunsiger,S. Daviel,Laura Greene,Atsushi Hatakeyama,R. H. Heffner,Y. Hirayama,Bassam Hitti,S. R. Kreitzman,C. D. P. Levy,R. I. Miller,R. I. Miller,M. Olivo,R. Poutissou +28 more
TL;DR: In this paper, a polarized low-energy 8 Li ion beam line was used to probe the magnetic field distribution near the surface of a material by stopping a polarized 8 Li beam in a thin overlayer of Ag. The implantation energy can be continuously adjusted from 1 to 90 keV and the maximum polarization achieved thus far is 80%.
Journal ArticleDOI
Transient coherence oscillation induced by a detuned Raman field in a rubidium Λ system
TL;DR: In this paper, the temporal evolution of coherent population trapping (CPT) was observed in rubidium atomic vapor when sudden changes were made to the detuning of a weak Raman field, and the subsequent creation and destruction of CPT are caused by the temporal oscillations of optically induced Raman coherence, with their period depending on the Raman detuning.
Journal ArticleDOI
Polarized radioactive beam at ISAC
C. D. P. Levy,Atsushi Hatakeyama,Y. Hirayama,R. F. Kiefl,Richard Baartman,John Behr,H. Izumi,D. Melconian,G. D. Morris,R. Nussbaumer,M. Olivo,M. R. Pearson,R. Poutissou,G. W. Wight +13 more
TL;DR: In this article, the authors reported that the polarization of the 8Li beam using a dual frequency, standing wave Ti:sapphire laser is up to ∼80% with high polarization achieved by matching the laser bandwidth to the energy spread in the beam.
Related Papers (5)
Production of a nuclear spin polarized23Na-beam by optical pumping
Production of full intensity, highly nuclear spin polarized alkali-metal (23Na) beams by a double resonance technique☆
H. Bechtel,D. Fick +1 more