Now showing items 570-589 of 813

    • R Aquarii: First Detection of Circumstellar SiO Maser Proper Motions 

      Boboltz, D. A.; Diamond, P. J.; Kemball, A. J. (IOP PUBLISHING LTD, 1997-10)
      We have made the first detection of circumstellar SiO maser proper motions in the envelope of a late-type star. Using the Very Long Baseline Array (VLBA), we have obtained observations at four epochs of the 43 GHz, upsilon ...
    • Radial velocity offsets due to mass outflows and extinction in active galactic nuclei 

      Crenshaw, D. M.; Schmitt, H. R.; Kraemer, S. B.; Mushotzky, R. F.; Dunn, J. P. (IOP Publishing Ltd., 2010-01)
      We present a study of the radial velocity offsets between narrow emission lines and host galaxy lines (stellar absorption and Hi 21 cm emission) in Seyfert galaxies with observed redshifts less than 0.043. We find that 35% ...
    • Radiative and Auger Decay Data for Modeling Nickel K Lines 

      Palmeri, P.; Quinet, P.; Mendoza, C.; Bautista, M. A.; Garcia, J.; Witthoeft, M. C.; Kallman, T. R. (IOP PUBLISHING LTD, 2008-12)
      Radiative and Auger decay data have been calculated for modeling the K lines in ions of the nickel isonuclear sequence, from Ni(+) up to Ni(27+). Level energies, transition wavelengths, radiative transition probabilities, ...
    • Radiative transition rates and collision strengths for Si II 

      Bautista, M. A.; Quinet, P.; Palmeri, P.; Badnell, N. R.; Dunn, J.; Arav, Nahum (EDP SCIENCES, 2009-12)
      Aims. This work reports on radiative transition rates and electron impact excitation collision strengths for levels of the 3s(2)3p, 3s3p(2), 3s(2)4s, and 3s(2)3d configurations of Si II. Methods. The radiative data were ...
    • Raman studies of sol-gel alumina - finite-size effects in nanocrystalline ALO(OH) 

      Doss, C. J.; Zallen, Richard H. (American Physical Society, 1993-12-01)
      A systematic Raman-scattering investigation has been carried out on sol-gel alumina prepared by the hot-water hydrolysis and condensation of AI(OC4H9)3, the Yoldas process, as a function of process variables such as the ...
    • Raman-scattering and optical studies of argon-etched GaAs surfaces 

      Feng, G. F.; Zallen, Richard H.; Epp, J. M.; Dillard, J. G. (American Physical Society, 1991-04)
      We have studied the structual damage in low-energy argon-ion-bombarded (ion-etched) GaAs using Raman scattering and ultraviolet reflectivity. When combined with post-bombardment sequential chemical etching, the Raman results ...
    • Raman-scattering depth profile of the structure of ion-implanted GaAs 

      Holtz, M.; Zallen, Richard H.; Brafman, O.; Matteson, S. (American Physical Society, 1988-03)
      We have carried out an extensive Raman-scattering investigation of the structure of beryllium-implanted gallium arsenide. Single-crystal GaAs was bombarded with 45-keV Be+ ions, and backscattering Raman measurements were ...
    • Raman_scattering studies of silicon_implanted gallium arsenide: The role of amorphicity 

      Holtz, Mark; Zallen, Richard H.; Geissberger, Art E.; Sadler, R. A. (American Institute of Physics, 1986-03-15)
      A series of Raman_scattering experiments were carried out on GaAsimplanted with Si+ and with SiF+ 3 ions, both before and after annealing, for samples subjected to fluences spanning a wide range. The implantation_induced ...
    • Random walks with imperfect trapping in the decoupled-ring approximation 

      Aspelmeier, T.; Magnin, J.; Graupner, W.; Täuber, Uwe C. (Springer-Verlag, 2002-08-01)
    • Ratchet Model of Baryogenesis 

      Takeuchi, T.; Minamizaki, A.; Sugamoto, A. (World Scientific Publ Co Pte Ltd, 2011-01-01)
    • RBSC-NVSS Sample. I. Radio and Optical Identifications of a Complete Sample of 1556 Bright X-Ray Sources 

      Bauer, F. E.; Condon, J. J.; Thuan, T. X.; Broderick, John J. (IOP PUBLISHING LTD, 2000-08)
      We cross-identified the ROSAT Bright Source Catalog (RBSC) and the NRAO VLA Sky Survey (NVSS) to construct the RBSC-NVSS sample of the brightest X-ray sources (greater than or equal to0.1 counts s(-1)similar to 10(-12) ...
    • Reaction-controlled diffusion 

      Trimper, S.; Täuber, Uwe C.; Schutz, G. M. (Amer Physical Soc, 2000-11-01)
    • Reaction-controlled diffusion: Monte Carlo simulations 

      Reid, Beth A.; Täuber, Uwe C.; Brunson, Jason C. (American Physical Society, 2003-10)
      We study the coupled two-species nonequilibrium reaction-controlled diffusion model introduced by Trimper [Phys. Rev. E 62, 6071 (2000)] by means of detailed Monte Carlo simulations in one and two dimensions. Particles of ...
    • Reaction-controlled diffusion: Monte Carlo simulations 

      Reid, Beth A.; Täuber, Uwe C.; Brunson, Jason C. (Amer Physical Soc, 2003-10-01)
      We study the coupled two-species non-equilibrium reaction-controlled diffusion model introduced by Trimper et al. [Phys. Rev. E 62, 6071 (2000)] by means of detailed Monte Carlo simulations in one and two dimensions. ...
    • Reactor (nu)over-bar(e) disappearance in the Double Chooz experiment 

      Abe, Y.; Aberle, C.; dos Anjos, J. C.; Barriere, J. C.; Bergevin, M.; Bernstein, A.; Bezerra, T. J. C.; Bezrukhov, L.; Blucher, E.; Bowden, N. S.; Buck, C.; Busenitz, J.; Cabrera, A.; Caden, E.; Camilleri, L.; Carr, R.; Cerrada, M.; Chang, P. J.; Chimenti, P.; Classen, T.; Collin, A. P.; Conover, E.; Conrad, J. M.; Crespo-Anadon, J. I.; Crum, K.; Cucoanes, A.; D'Agostino, M. V.; Damon, E.; Dawson, J. V.; Dazeley, S.; Dietrich, D.; Djurcic, Z.; Dracos, M.; Durand, V.; Ebert, J.; Efremenko, Y.; Elnimr, M.; Etenko, A.; Fallot, M.; Fechner, M.; von Feilitzsch, F.; Felde, J.; Franco, D.; Franke, A. J.; Franke, M.; Furuta, H.; Gama, R.; Gil-Botella, I.; Giot, L.; Goger-Neff, M.; Gonzalez, L. F. G.; Goodman, M. C.; Goon, J. T. M.; Greiner, D.; Haag, N.; Hagner, C.; Hara, T.; Hartmann, F. X.; Haser, J.; Hatzikoutelis, A.; Hayakawa, T.; Hofmann, M.; Horton-Smith, G. A.; Hourlier, A.; Ishitsuka, M.; Jochum, J.; Jollet, C.; Jones, C. L.; Kaether, F.; Kalousis, L. N.; Kamyshkov, Y.; Kaplan, D. M.; Kawasaki, T.; Keefer, G.; Kemp, E.; de Kerret, H.; Kibe, Y.; Konno, T.; Kryn, D.; Kuze, M.; Lachenmaier, T.; Lane, C. E.; Langbrandtner, C.; Lasserre, T.; Letourneau, A.; Lhuillier, D.; Lima, H. P.; Lindner, M.; Lopez-Castano, J. M.; LoSecco, J. M.; Lubsandorzhiev, B. K.; Lucht, S.; McKee, D.; Maeda, J.; Maesano, C. N.; Mariani, Camillo; Maricic, J.; Martino, J.; Matsubara, T.; Mention, G.; Meregaglia, A.; Miletic, T.; Milincic, R.; Miyata, H.; Mueller, T. A.; Nagasaka, Y.; Nakajima, K.; Novella, P.; Obolensky, M.; Oberauer, L.; Onillon, A.; Osborn, A.; Ostrovskiy, I.; Palomares, C.; Pepe, I. M.; Perasso, S.; Perrin, P.; Pfahler, P.; Porta, A.; Potzel, W.; Reichenbacher, J.; Reinhold, B.; Remoto, A.; Rohling, M.; Roncin, R.; Roth, S.; Sakamoto, Y.; Santorelli, R.; Sato, F.; Schonert, S.; Schoppmann, S.; Schwetz, T.; Shaevitz, M. H.; Shimojima, S.; Shrestha, D.; Sida, J. L.; Sinev, V.; Skorokhvatov, M.; Smith, E.; Spitz, J.; Stahl, A.; Stancu, I.; Stokes, L. F. F.; Strait, M.; Stuken, A.; Suekane, F.; Sukhotin, S.; Sumiyoshi, T.; Sun, Y.; Svoboda, R.; Terao, K.; Tonazzo, A.; Toups, M.; Thi, H. H. T.; Valdiviesso, G.; Veyssiere, C.; Wagner, S.; Watanabe, H.; White, B.; Wiebusch, C.; Winslow, L.; Worcester, M.; Wurm, M.; Yermia, F.; Zimmer, V.; Double Chooz, Collaboration (American Physical Society, 2012-09-18)
      The Double Chooz experiment has observed 8249 candidate electron antineutrino events in 227.93 live days with 33.71 GW-ton-years (reactor power X detector mass X live time) exposure using a 10.3 m(3) fiducial volume detector ...
    • 'Real' versus 'imaginary' noise in diffusion-limited reactions 

      Howard, M. J.; Täuber, Uwe C. (1997-11-21)
    • Real-time moire interferometry using a Fabry-Perot cavity with a phase conjugate mirror 

      Indebetouw, G.; Lo, K. P. (Optical Society of America, 1989-11)
      We describe a self-referencing interferometer in which the wavefront and its complex conjugate are generated in a Fabry-Perot cavity having one phase conjugate mirror (PCM). The finite response time of the PCM allows one ...
    • Reevaluating reactor antineutrino anomalies with updated flux predictions 

      Berryman, Jeffrey M.; Huber, Patrick (2020-01-14)
      Hints for the existence of a sterile neutrino at nuclear reactors are reexamined using two updated predictions for the fluxes of antineutrinos produced in fissions. These new predictions diverge in their preference for the ...
    • Reflections on the anomalous ANITA events: the Antarctic subsurface as a possible explanation 

      Shoemaker, Ian M.; Kusenko, Alexander; Munneke, Peter Kuipers; Romero-Wolf, Andrew; Schroeder, Dustin M.; Siegert, Martin J. (Cambridge University Press, 2020-03-30)
      The Antarctic Impulsive Transient Antenna (ANITA) balloon experiment was designed to detect radio signals initiated by high-energy neutrinos and cosmic ray (CR) air showers. These signals are typically discriminated by the ...
    • Regulatory targets of quorum sensing in Vibrio cholerae: evidence for two distinct HapR-binding motifs 

      Tsou, Amy M.; Cai, Tao; Liu, Zhi; Zhu, Jun; Kulkarni, Rahul V. (2009-05)
      The quorum-sensing pathway in Vibrio cholerae controls the expression of the master regulator HapR, which in turn regulates several important processes such as virulence factor production and biofilm formation. While HapR ...