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Browsing Physics by Title

Now showing items 75-94 of 123

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    Photoionization and photofragmentation of singly charged positive and negative SC3N@C-80 endohedral fullerene ions 

    Mueller, A.; Martins, M.; Kilcoyne, A. L. D.; Phaneuf, R. A.; Hellhund, J.; Borovik, A.; Holste, K.; Bari, S.; Buhr, T.; Klumpp, S.; Perry-Sassmannshausen, A.; Reinwardt, S.; Ricz, S.; Schubert, K.; Schippers, S. (2019)
    Photoprocesses of the endohedral fullerene ions SC3N@C-80(+) and SC3N@ C-80(-) in the gas phase have been investigated in the photon energy ranges 30-50 eV and 280-420 eV. Single and double ionization as well as single ...

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    Photoionization and photofragmentation of the C-60(+) molecular ion 

    Baral, Kiran K.; Aryal, Nagendra B.; Esteves-Macaluso, David A.; Thomas, C. M.; Hellhund, J.; Lomsadze, R.; Kilcoyne, A. L. D.; Mueller, A.; Schippers, S.; Phaneuf, R. A. (2016)
    Cross-section measurements are reported for single and double photoionization of C-60(+) ions in the photon energy range 18-150 eV accompanied by the loss of zero to seven pairs of carbon atoms, as well as for fragmentation ...

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    Potential for a large earthquake near Los Angeles inferred from the 2014 La Habra earthquake 

    Donnellan, Andrea; Ludwig, Lisa G.; Parker, Jay W.; Rundle, John B.; Wang, Jun; Pierce, Marlon; Blewitt, Geoffrey; Hensley, Scott (2015)
    Tectonic motion across the Los Angeles region is distributed across an intricate network of strike-slip and thrust faults that will be released in destructive earthquakes similar to or larger than the 1933M6.4 Long Beach ...

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    Preface: Radiation from high energy density plasmas 

    Giuliani, John L.; Safronova, Alla S. (2016)

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    Progress toward a unified kJ-machine CANDY 

    Kitagawa, Yoneyoshi; Mori, Yoshitaka; Komeda, Osamu; Hanayama, Ryohei; Ishii, Katsuhiro; Okihara, Shinichiro; Fujita, Kazuhisa; Nakayama, Suisei; Sekine, Takashi; Sato, Nakahiro; Kurita, Takashi; Kawashima, Toshiyuki; Watari, Takeshi; Kan, Hirofumi; Nakamura, Naoki; Kondo, Takuya; Fujine, Manabu; Azuma, Hirozumi; Motohiro, Tomoyoshi; Hioki, Tatsumi; Kakeno, Mitsutaka; Nishimura, Yasuhiko; Sunahara, Atsushi; Sentoku, Yasuhiko; Miura, Eisuke; Arikawa, Yasunobu; Nagai, Takahiro; Abe, Yuki; Ozaki, Satoshi; Noda, Akira (2016)
    To construct a unified experimental machine CANDY using a kJ DPSSL driver in the fast -ignition scheme, the Laser for Fast Ignition Experiment (LFEX) at Osaka is used, showing that the laser-driven ions heat the preimploded ...

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    Progress Towards a Laser Produced Relativistic Electron-Positron Pair Plasma 

    Chen, Hui; Bonlie, J.; Cauble, R.; Fiuza, F.; Goldstein, W.; Hazi, A.; Keane, C.; Link, A.; Marley, E.; Nagel, S. R.; Park, J.; Shepherd, R.; Williams, G. J.; Meyerhofer, D. D.; Fiksel, G.; Barnak, D.; Chang, P. Y.; Nakai, Mitsuo; Arikawa, Yasunobu; Azechi, Hiroshi; Fujioka, Shinsuke; Kojima, Sadaoki; Miyanaga, Noriaki; Morita, T.; Nagai, Takahiro; Nishimura, Hiroaki; Ozaki, T.; Sakawa, Y.; Takabe, H.; Zhang, Z.; Kerr, S.; Fedosejevs, R.; Sentoku, Y.; Hill, M. P.; Hoarty, D. J.; Hobbs, L. M. R.; James, S. F. (2016)
    A set of experiments has been performed exploring unique characteristics of pair jets and plasmas at several energetic short-pulse laser facilities including Titan at Livermore and OMEGA EP in Rochester, as well as the ...

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    Proton imaging of an electrostatic field structure formed in laser-produced counter-streaming plasmas 

    Morita, T.; Kugland, N. L.; Wan, W.; Crowston, R.; Drake, R. P.; Fiuza, F.; Gregori, G.; Huntington, C.; Ishikawa, T.; Koenig, M.; Kuranz, C.; Levy, M. C.; Martinez, David A.; Meinecke, J.; Miniati, F.; Murphy, C. D.; Pelka, A.; Plechaty, C.; Presura, R.; Quiros-Aguilar, Nancy P.; Remington, B. A.; Reville, B.; Ross, J. S.; Ryutov, D. D.; Sakawa, Y.; Steele, L.; Takabe, H.; Yamaura, Y.; Woolsey, N.; Park, H.-S. (2016)
    We report the measurements of electrostatic field structures associated with an electrostatic shock formed in laser-produced counter-streaming plasmas with proton imaging. The thickness of the electrostatic structure is ...

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    Quantum Network of Atom Clocks: A Possible Implementation with Neutral Atoms 

    Kómár, Péter; Topcu, T.; Kessler, E. M.; Derevianko, Andrei; Vuletic, V.; Ye, J.; Lukin, Mikhail D. (2016)
    We propose a protocol for creating a fully entangled Greenberger-Horne-Zeilinger-type state of neutral atoms in spatially separated optical atomic clocks. In our scheme, local operations make use of the strong dipole-dipole ...

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    Relativistic configuration interaction plus linearized-coupled-cluster calculations of U2+ energies, g factors, transition rates, and lifetimes 

    Savukov, I.; Safronova, U. I.; Safronova, M. S. (2015)
    Excitation energies, term designations, g factors, transition rates, and lifetimes of U2+ are determined using a relativistic configuration interaction (CI) + linearized-coupled-cluster (LCC) approach. The CI-LCC energies ...

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    Relativistic many-body calculation of energies, lifetimes, polarizabilities, blackbody radiative shift, and hyperfine constants in Lu2+ 

    Safronova, U. I.; Safronova, M. S.; Johnson, W. R. (2016)
    Energy levels of 30 low-lying states of Lu2+ and allowed electric-dipole matrix elements between these states are evaluated using a relativistic all-order method in which all single, double, and partial triple excitations ...

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    Relativistic many-body calculation of energies, multipole transition rates, and lifetimes in tungsten ions 

    Safronova, U. I.; Safronova, M. S.; Nakamura, Nobuyuki (2017)
    Atomic properties of Cd-like W26+, In-like W25+, and Sn-like W24+ ions are evaluated by using a relativistic CI + all-order approach that combines configuration-interaction and the coupled-cluster methods. The energies, ...

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    Repetitive Solid Spherical Pellet Injection and Irradiation toward the Repetitive-mode Fast-Ignition Fusion mini-Reactor CANDY. 

    Hanayama, Ryohei; Komeda, Osamu; Nishimura, Yasuhiko; Mori, Yoshitaka; Ishii, Katsuhiro; Nakayama, Suisei; Okihara, Shinichiro; Fujita, Kazuhisa; Sekine, Takashi; Sato, Nakahiro; Kurita, Takashi; Kawashima, Toshiyuki; Kan, Hirofumi; Nakamura, Naoki; Kondo, Takuya; Fujine, Manabu; Azuma, Hirozumi; Hioki, Tatsumi; Kakeno, Mitsutaka; Motohiro, Tomoyoshi; Sunahara, Atsushi; Sentoku, Yasuhiko; Miura, Eisuke; Kitagawa, Yoneyoshi (2016)
    Pellet injection and repetitive laser illumination are key technologies for realizing inertial fusion energy[1-4]. Neutron generator using lasers also requires a repeating pellet target supplier. Here we present the first ...

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    Resonant interaction of trapped cold atoms with a magnetic cantilever tip 

    Monge, Cris A. M.; Valencia, Jose; Geraci, Andrew A.; Eardley, Matthew; Moreland, John; Hollberg, Leo; Kitching, John (2015)
    Magnetic resonance in an ensemble of laser-cooled trapped Rb atoms is excited using a microcantilever with a magnetic tip. The cantilever is mounted on a multilayer chip designed to capture, cool, and magnetically transport ...

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    Results from the 2014 November 15th Multi-Chord Stellar Occultation by the Tno (229762) 2007 Uk126 

    Benedetti-Rossi, G.; Sicardy, B.; Buie, M. W.; Ortiz, J. L.; Vieira-Martins, R.; Keller, Jennifer M.; Braga-Ribas, F.; Camargo, J. I. B.; Assafin, M.; Morales, N.; Duffard, R.; Dias-Oliveira, A.; Santos-Sanz, P.; Desmars, J.; Gomes-Junior, A. R.; Leiva, R.; Bardecker, J.; Bean, J. K.; Olsen, A. M.; Ruby, D. W.; Sumner, R.; Thirouin, A.; Gomez-Munoz, M. A.; Gutierrez, L.; Wasserman, L.; Charbonneau, D.; Irwin, J.; Levine, S.; Skiff, B. (2016)
    We present results derived from the first multi-chord stellar occultation by the trans-Neptunian object (229762) 2007 UK126, observed on 2014 November 15. The event was observed by the Research and Education Collaborative ...

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    Role of hydrogen bonding in hysteresis observed in sorption-induced swelling of soft nanoporous polymers 

    Chen, Mingyang; Coasne, Benoit; Guyer, Robert A.; Derome, Dominique; Carmeliet, Jan (2018)
    Hysteresis is observed in sorption-induced swelling in various soft nanoporous polymers. The associated coupling mechanism responsible for the observed sorption-induced swelling and associated hysteresis needs to be ...

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    Search for domain wall dark matter with atomic clocks on board global positioning system satellites 

    Roberts, Benjamin M.; Blewitt, Geoffrey; Dailey, Conner B.; Murphy, Mac; Pospelov, Maxim; Rollings, Alex; Sherman, Jeff; Williams, Wyatt; Derevianko, Andrei (2017)
    Cosmological observations indicate that dark matter makes up 85% of all matter in the universe yet its microscopic composition remains a mystery. Dark matter could arise from ultralight quantum fields that form macroscopic ...

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    Self-generated surface magnetic fields inhibit laser-driven sheath acceleration of high-energy protons 

    Nakatsutsumi, M.; Sentoku, Y.; Korzhimanov, A.; Chen, S. N.; Buffechoux, S.; Kon, A.; Atherton, B.; Audebert, P.; Geissel, M.; Hurd, L.; Kimmel, M.; Rambo, P.; Schollmeier, M.; Schwarz, J.; Starodubtsev, M.; Gremillet, L.; Kodama, Ryosuke; Fuchs, J. (2018)
    High-intensity lasers interacting with solid foils produce copious numbers of relativistic electrons, which in turn create strong sheath electric fields around the target. The proton beams accelerated in such fields have ...

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    Sensing short range forces with a nanosphere matter-wave interferometer 

    Geraci, Andrew A.; Goldman, Hart (2015)
    We describe a method for sensing short range forces using matter-wave interference in dielectric nanospheres. When compared with atom interferometers, the larger mass of the nanosphere results in reduced wave-packet ...

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    Sensitivity of Atom Interferometry to Ultralight Scalar Field Dark Matter 

    Geraci, Andrew A.; Derevianko, Andrei (2016)
    We discuss the use of atom interferometry as a tool to search for dark matter (DM) composed of virialized ultralight fields (VULFs). Previous work on VULF DM detection using accelerometers has considered the possibility ...

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    Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization 

    Grundmann, S.; Trinter, F.; Bray, A. W.; Eckart, S.; Rist, J.; Kastirke, Gregor; Metz, D.; Klumpp, S.; Viefhaus, J.; Schmidt, L. Ph H.; Williams, J. B.; Doerner, Reinhard; Jahnke, Till; Schoeffler, M. S.; Kheifets, A. S. (2018)
    We report on a kinematically complete measurement of double ionization of helium by a single 1100 eV circularly polarized photon. By exploiting dipole selection rules in the two-electron continuum state, we observed the ...