Results 151 to 160 of about 473,738 (197)

Spin-Flip Raman Laser

Oyo Buturi, 1972
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Intermolecular Nuclear Spin Hyperpolarization Transfer via Cross-Relaxation Triggers RASER of Solute Molecules. [PDF]

Angew Chem Int Ed Engl
Trofimov IA, Yi AP, Salnikov OG, Pravdivtsev AN, de Maissin H, Chekmenev EY, Hövener JB, Schmidt AB, Koptyug IV.   +8 more
europepmc   +1 more source

SPIN FLIP CONDUCTANCE OF QUANTUM NANOCONTACTS [PDF]

Physics, Chemistry and Application of Nanostructures, 2005
The theory of nanosize point contacts made of ferromagnetic metals is developed. A general quantum scattering theory is applied to calculate conductance of the nanocontact with domain wall located in the constriction. Exact solution of the electron motion in the potential of the linear domain wall is used as a zero-order approximation.
Useinov A., Useinov N., Tagirov L.
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Spin-Flip Symmetry and Synchronization

Evolutionary Computation, 2002
In the context of optimization by evolutionary algorithms (EAs), epistasis, deception, and scaling are well-known examples of problem difficulty characteristics. The presence of one such characteristic in the representation of a search problem indicates a certain type of difficulty the EA is to encounter during its search for globally optimal ...
van Hoyweghen, Clarissa, Naudts, Bart, Goldberg, David E.   +2 more
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Field-induced spin-flip and spin-flip transitions in PrGa2

Journal of Magnetism and Magnetic Materials, 1994
Abstract A detailed neutron diffraction study of a single crystal of hexagonal PrGa 2 under an applied field is presented. The field is applied along the easy [100] direction of the hexagonal plane. The compound exhibits several field-induced magnetic structures and, in particular, an uncompensated long period commensurate antiphase structure ...
A.R. Ball, D. Gignoux, D. Schmitt, F.Y. Zhang, P. Burlet   +4 more
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Spin-flip and non spin-flip excitations in the (7Li,7Be) reaction

Nuclear Physics A, 1992
Abstract Spin-flip (ΔS = 1) and non spin-flip (ΔS = 0) excitations were investigated in the (7Li,7Be) reactions on 12C and 28Si at EL = 26 MeV/A and θL = 0° by measuring separately the (7Li,7Beg.s.) and (7Li,7Be0.43MeV) reaction channels with the 7Be-γ coincidence technique.
S. Nakayama, T. Yamagata, M. Tanaka, M. Inoue, K. Yuasa, T. Itahashi, H. Ogata, N. Koori, K. Shima, M.B. Greenfield   +9 more
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Spin flipping in RHIC

PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268), 2002
At the Relativistic Heavy Ion Collider (RHIC), polarized protons will be accelerated and stored for spin physics experiments. Two full helical snakes will be used to eliminate the depolarization due to imperfection and intrinsic spin resonances. Since no resonances are crossed in RHIC, the beam polarization remains fixed through acceleration.
Bai, M., Lehrach, A., Luccio, A., MacKay, W. W., Roser, T., Tsoupas, N.   +5 more
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Restricted active space spin-flip (RAS-SF) with arbitrary number of spin-flips

Phys. Chem. Chem. Phys., 2013
The restricted active space spin-flip (RAS-SF) approach is a multistate, spin-complete, variational and size consistent method applicable to systems featuring electronic (near-)degeneracies. In contrast to CASSCF it does not involve orbital optimizations and so avoids issues such as root-flipping and state averaging. This also makes RAS-SF calculations
Franziska, Bell, Paul M, Zimmerman, David, Casanova, Matthew, Goldey, Martin, Head-Gordon   +4 more
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Spin-flip excitations in a schematic model

Physical Review C, 1988
Several recent experiments using a proton beam have shown that nuclear-spin excitations in light nuclei appear relatively suppressed at low excitation energy but surprisingly enhanced at higher excitation. We present here a calculation based on energy-weighted sum rules which yields results consistent with spin-flip data in $^{40}\mathrm{Ca}$.
, Boucher, , Castel, , Okuhara, , Johnstone, , Wambach, , Suzuki   +5 more
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Single-Atom Spin-Flip Spectroscopy

Science, 2004
We demonstrate the ability to measure the energy required to flip the spin of single adsorbed atoms. A low-temperature, high–magnetic field scanning tunneling microscope was used to measure the spin excitation spectra of individual manganese atoms adsorbed on Al 2 O 3 islands on a NiAl ...
A J, Heinrich, J A, Gupta, C P, Lutz, D M, Eigler   +3 more
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