Now showing items 483-502 of 757

    • Radiative Decay Rates in Hg+ from Observations of Quantum Jumps in a Single Ion 

      Itano, Wayne M.; Bergquist, J.C.; Hulet, Randall G.; Wineland, D.J. (1987)
      Radiative decay rates connecting the lowest four energy levels of Hg+198 have been derived solely from an analysis of the fluctuations (quantum jumps) of the laser-induced fluorescence of the 194-nm first resonance transition ...
    • Radiative lifetime of the 2P state of lithium 

      McAlexander, W.I.; Abraham, E.R.I.; Hulet, R.G. (1996)
      We determine the radial dipole moment between the 2S and 2P states of atomic lithium by analyzing the long-range vibrational eigenenergies of the singly excited diatomic molecule. The result can be expressed in terms of ...
    • Rapidity distributions in exclusive Z+jet and γ+jet events in pp collisions at √s=7  TeV 

      Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2013)
      Rapidity distributions are presented for events containing either a Z boson or a photon with a single jet in proton-proton collisions produced at the CERN LHC. The data, collected with the CMS detector at √s=7  TeV, ...
    • Ratios of dijet production cross sections as a function of the absolute difference in rapidity between jets in proton–proton collisions at √s=7 TeV 

      CMS Collaboration; Adair, A.; Boulahouache, C.; Cuplov, V.; Ecklund, K.M.; Geurts, F.J.M.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2012)
      A study of dijet production in proton–proton collisions was performed at √s=7~TeV for jets with p T>35 GeV and |y|<4.7 using data collected with the CMS detector at the LHC in 2010. Events with at least one pair of jets ...
    • RCM-E and AMIE studies of the Harang reversal formation during a steady magnetospheric convection event 

      Yang, Jian; Toffoletto, Frank; Lu, Gang; Wiltberger, Michael (2014)
      This paper presents the results of a modeling study on the formation of the Harang reversal (HR) during a steady magnetospheric convection event. The Harang reversal is identified as the boundary of the northward and ...
    • RCM-E simulation of a thin arc preceded by a north-south-aligned auroral streamer 

      Yang, Jian; Toffoletto, Frank R.; Wolf, Richard A. (2014)
      The Time History of Events and Macroscale Interactions during Substorms (THEMIS) all-sky imager data have recently revealed a repeatable sequence that occurs during many auroral substorms, in which a newly formed thin arc ...
    • RCM-E simulation of bimodal transport in the plasma sheet 

      Yang, Jian; Wolf, Richard A.; Toffoletto, Frank R.; Sazykin, Stanislav; Wang, Chih-Ping (2014)
      Plasma sheet transport is bimodal, consisting of both large-scale adiabatic convection and intermittent bursty flows in both earthward and tailward directions. We present two comparison simulations with the Rice Convection ...
    • Realization of a measurement of a ‘‘weak value’’ 

      Ritchie, N.W.M.; Story, J.G.; Hulet, Randall G. (1991)
      We present the first realization of a measurement of a ‘‘weak value,’’ a concept recently introduced by Aharonov, Albert, and Vaidman (AAV). Our experiment uses a birefringent crystal to separate the two linear-polarization ...
    • Renormalized energies of superfluorescent bursts from an electron-hole magnetoplasma with high gain in InxGa1−xAs quantum wells 

      Kim, J.-H.; Lee, J.; Noe, G.T.; Wang, Y.; Wojcik, A.K.; McGill, S.A.; Reitze, D.H.; Belyanin, A.A.; Kono, J. (2013)
      We study light emission properties of a population-inverted 2D electron-hole plasma in a quantizing magnetic field. We observe a series of superfluorescent (SF) bursts, discrete both in time and energy, corresponding to the ...
    • Robust Helical Edge Transport in Gated InAs/GaSb Bilayers 

      Du, Lingjie; Knez, Ivan; Sullivan, Gerard; Du, Rui-Rui (2015)
      We have engineered electron-hole bilayers of inverted InAs/GaSb quantum wells, using dilute silicon impurity doping to suppress residual bulk conductance. We have observed robust helical edge states with wide conductance ...
    • Robust Subnanometric Plasmon Ruler by Rescaling of the Nonlocal Optical Response 

      Teperik, T.V.; Nordlander, P.; Aizpurua, J.; Borisov, A.G. (2013)
      We present the optical response of two interacting metallic nanowires calculated for separation distances down to angstrom range. State-of-the-art local and nonlocal approaches are compared with full quantum time-dependent ...
    • Rydberg Atoms in "Circular" States 

      Hulet, Randall G.; Kleppner, Daniel (1983)
      The population of a beam of lithium atoms has been transferred from a low angular momentum Rydberg state to a state with |m|=n−1, with nearly 100% efficiency. Selective field ionization is employed to detect the high |m| ...
    • Rydberg blockade effects at n∼300 in strontium 

      Zhang, X.; Dunning, F.B.; Yoshida, S.; Burgdörfer, J. (2015)
      Rydberg blockade at n∼300, is examined using strontium nF31 Rydberg atoms excited in an atomic beam in a small volume defined by two tightly focused crossed laser beams. The observation of blockade for such states is ...
    • Scaling properties of the plateau transitions in the two-dimensional hole gas system 

      Wang, Xuebin; Liu, Haiwen; Zhu, Junbo; Shan, Pujia; Wang, Pengjie; Fu, Hailong; Du, Lingjie; Pfeiffer, L.N.; West, K.W.; Xie, X.C.; Du, Rui-Rui; Lin, Xi (2016)
      The behavior of phase coherence is studied in two-dimensional hole gas through the integer quantum Hall plateau-to-plateau transition. From the plateau transition as a function of temperature, scaling properties of multiple ...
    • Scanning-Ion Microscopy with Polarization Analysis (Simpa) 

      Zheng, N.J.; Rau, C. (1993)
      We have developed a novel, high-resolution magnetic imaging technique, scanning-ion microscopy with polarization analysis (SIMP A). In SIMP A, a highly-focused, scanning Ga+ ion beam is used to excite spin-polarized electrons ...
    • Scattering Spectra of Single Gold Nanoshells 

      Nehl, Colleen L.; Grady, Nathaniel K.; Goodrich, Glenn P.; Tam, Felicia; Halas, Naomi J.; Hafner, Jason H. (2004-11-04)
    • A search for a doubly-charged Higgs boson in pp collisions at √s=7 TeV 

      CMS Collaboration; Adair, A.; Boulahouache, C.; Ecklund, K.M.; Geurts, F.J.M.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2012)
      A search for a doubly-charged Higgs boson in pp collisions at √s=7 TeV is presented. The data correspond to an integrated luminosity of 4.9 fb−1, collected by the CMS experiment at the LHC. The search is performed using ...
    • Search for a fermiophobic Higgs boson in pp collisions at √s=7 TeV 

      CMS Collaboration; Adair, A.; Boulahouache, C.; Ecklund, K.M.; Geurts, F.J.M.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2012)
      Combined results are reported from searches for a fermiophobic Higgs boson in the γγ, WW, and ZZ decay modes in proton-proton collisions at √s=7 TeV. The explored Higgs boson mass range is 110–300 GeV. The data sample ...
    • Search for a Higgs boson decaying into a b-quark pair and produced in association with b quarks in proton–proton collisions at 7 TeV 

      CMS Collaboration; Adair, A.; Akgun, B.; Boulahouache, C.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2013)
      A search for a neutral Higgs boson decaying to a pair of b quarks, and produced in association with at least one additional b quark, is presented. Multijet final states with three jets identified as originating from b ...
    • Search for a Higgs boson decaying into a Z and a photon in pp collisions at √s=7 and 8 TeV 

      CMS Collaboration; Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Padley,B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2013)
      A search for a Higgs boson decaying into a Z boson and a photon is described. The analysis is performed using proton–proton collision datasets recorded by the CMS detector at the LHC. Events were collected at center-of-mass ...