Now showing items 106-122 of 122

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    Target Monitoring and Plasma Diagnosis using 2 omega probe beam for CANDY 

    Ishii, Katsuhiro; Mori, Yoshitaka; Hanayama, Ryohei; Nakayama, Suisei; Okihara, Shinichiro; Fujita, Kazuhisa; Sekina, Takashi; Sato, Nakahiro; Kurita, Takashi; Kawashima, Toshiyuki; Kan, Hirofumi; Komeda, Osamu; Nakamura, Naoki; Kondo, Takuya; Fujine, Manabu; Azuma, Hirozumi; Hioki, Tatsumi; Kakeno, Mitsutaka; Motohiro, Tomoyoshi; Nishimura, Yasuhiko; Sunahara, Atsushi; Sentoku, Yasuhiko; Miura, Eisuke; Kitagawa, Yoneyoshi (2016)
    We have developed the shadowgraph and interferometer with second-harmonic of heating pulses laser to observe target and plasma in highly-repetitive fusion reaction experiments. In the deuterated polystyrene ((C8D8) n double ...
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    The concept of transport capacity in geomorphology 

    Wainwright, John; Parsons, Anthony J.; Cooper, James R.; Gao, Peng; Gillies, John A.; Mao, Luca; Orford, Julian D.; Knight, Peter G. (2015)
    The notion of sediment-transport capacity has been engrained in geomorphological and related literature for over 50 years, although its earliest roots date back explicitly to Gilbert in fluvial geomorphology in the 1870s ...
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    The Two-Column Aerosol Project: Phase I-Overview and impact of elevated aerosol layers on aerosol optical depth 

    Berg, Larry K.; Fast, Jerome D.; Barnard, James C.; Burton, Sharon P.; Cairns, Brian; Chand, Duli; Comstock, Jennifer M.; Dunagan, Stephen; Ferrare, Richard A.; Flynn, Connor J.; Hair, Johnathan W.; Hostetler, Chris A.; Hubbe, John; Jefferson, Anne; Johnson, Roy; Kassianov, Evgueni I.; Kluzek, Celine D.; Kollias, Pavlos; Lamer, Katia; Lantz, Kathleen; Mei, Fan; Miller, Mark A.; Michalsky, Joseph; Ortega, Ivan; Pekour, Mikhail; Rogers, Ray R.; Russell, Philip B.; Redemann, Jens; Sedlacek, Arthur J.; Segal-Rosenheimer, Michal; Schmid, Beat; Shilling, John E.; Shinozuka, Yohei; Springston, Stephen R.; Tomlinson, Jason M.; Tyrrell, Megan; Wilson, Jacqueline M.; Volkamer, Rainer; Zelenyuk, Alla; Berkowitz, Carl M. (2016)
    The Two-Column Aerosol Project (TCAP), conducted from June 2012 through June 2013, was a unique study designed to provide a comprehensive data set that can be used to investigate a number of important climate science ...
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    Theoretical study of the g factor and lifetime of the 6s6 p P-3(0) state of mercury 

    Porsev, S. G.; Safronova, U. I.; Safronova, M. S. (2017)
    We calculate the g factor of the 6s6p (3) P-0 state of 199 and 201 mercury isotopes using a relativistic high-precision all-order method that combines the configuration interaction and the coupled-cluster approaches. Our ...
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    Towards a Mg Lattice Clock: Observation of the S-1(0)-P-3(0) Transition and Determination of the Magic Wavelength 

    Kulosa, A. P.; Fim, D.; Zipfel, K. H.; Ruehmann, S.; Sauer, S.; Jha, N.; Gibble, K.; Ertmer, W.; Rasel, E. M.; Safronova, M. S.; Safronova, U. I.; Porsev, S. G. (2015)
    We optically excite the electronic state 3s3p P-3(0) in Mg-24 atoms, laser cooled and trapped in a magic-wavelength lattice. An applied magnetic field enhances the coupling of the light to the otherwise strictly forbidden ...
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    Tracing intermolecular Coulombic decay of carbon-dioxide dimers and oxygen dimers after valence photoionization 

    Iskandar, W.; Gatton, A. S.; Gaire, B.; Sturm, F. P.; Larsen, K. A.; Champenois, E. G.; Shivaram, N.; Moradmand, A.; Williams, J. B.; Berry, B.; Severt, T.; Ben-Itzhak, I.; Metz, D.; Sann, H.; Weller, M.; Schoeffler, M.; Jahnke, Till; Doerner, Reinhard; Slaughter, D.; Weber, Th (2019)
    We have conducted an experimental study on the photo double ionization (PDI) of carbon-dioxide dimers at photon energies of 37 and 55 eV and oxygen dimers at photon energies of 38, 41.5, and 46 eV, while focusing on the ...
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    Transitions between the 4f-core-excited states in Ir16+, Ir17+, and Ir18+ ions for clock applications 

    Safronova, U. I.; Flambaum, V. V.; Safronova, M. S. (2015)
    Iridium ions near 4f - 5s level crossings are the leading candidates for a new type of atomic clocks with a high projected accuracy and a very high sensitivity to the temporal variation of the fine structure constant a. ...
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    Transport and spatial energy deposition of relativistic electrons in copper-doped fast ignition plasmas 

    Jarrott, L. C.; McGuffey, C.; Beg, F. N.; Solodov, A. A.; Theobald, W.; Qiao, B.; Stoeckl, C.; Betti, R.; Chen, H.; Delettrez, J. A.; Doppner, T.; Giraldez, E. M.; Glebov, V. Y.; Habara, H.; Iwawaki, T.; Key, M. H.; Luo, R. W.; Marshall, F. J.; McLean, H. S.; Mileham, C.; Patel, P. K.; Santos, J. J.; Sawada, H.; Stephens, R. B.; Yabuuchi, T.; Wei, M. S. (2017)
    Fast electron transport and spatial energy deposition are investigated in integrated cone-guided Fast Ignition experiments by measuring fast electron induced copper K-shell emission using a copper tracer added to deuterated ...
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    Tungsten Data for Current and Future Uses in Fusion and Plasma Science 

    Beiersdorfer, Peter; Clementson, Joel; Safronova, Ulyana I. (6/15/2015)
    We give a brief overview of our recent experimental and theoretical work involving highly charged tungsten ions in high-temperature magnetically confined plasmas. Our work includes X-ray and extreme ultraviolet spectroscopy, ...
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    Two-color monochromatic x-ray imaging with a single short-pulse laser 

    Sawada, H.; Daykin, T.; McLean, H. S.; Chen, H.; Patel, P. K.; Ping, Y.; Perez, F. (2017)
    Simultaneous monochromatic crystal imaging at 4.5 and 8.0 keV with x-rays produced by a single short-pulse laser is presented. A layered target consisting of thin foils of titanium and copper glued together is irradiated ...
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    Two-Particle Interference of Electron Pairs on a Molecular Level 

    Waitz, M.; Metz, D.; Lower, J.; Schober, C.; Keiling, M.; Pitzer, Martin; Mertens, K.; Martins, M.; Viefhaus, J.; Klumpp, S.; Weber, T.; Schmidt-Boecking, H.; Schmidt, L. Ph H.; Morales, F.; Miyabe, S.; Rescigno, T. N.; McCurdy, C. W.; Martin, F.; Williams, J. B.; Schoeffler, M. S.; Jahnke, Till; Doerner, Reinhard (2016)
    We investigate the photodouble ionization of H-2 molecules with 400 eV photons. We find that the emitted electrons do not show any sign of two-center interference fringes in their angular emission distributions if considered ...
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    Ultrafast Imaging of Laser Driven Shock Waves using Betatron X-rays from a Laser Wakefield Accelerator 

    Wood, J. C.; Chapman, D. J.; Poder, K.; Lopes, N. C.; Rutherford, M. E.; Whites, T. G.; Albert, F.; Behm, K. T.; Booth, N.; Bryant, J. S. J.; Foster, P. S.; Glanzer, S.; Hill, E.; Krushelnick, K.; Najmudin, Z.; Pollock, B. B.; Rose, S.; Schumaker, W.; Scott, R. H. H.; Sherlock, M.; Thomas, A. G. R.; Zhao, Z.; Eakins, D. E.; Mangles, S. P. D. (2018)
    Betatron radiation from laser wakefield accelerators is an ultrashort pulsed source of hard, synchrotron-like x-ray radiation. It emanates from a centimetre scale plasma accelerator producing GeV level electron beams. In ...
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    Unambiguous observation of F-atom core-hole localization in CF4 through body-frame photoelectron angular distributions 

    McCurdy, C. W.; Rescigno, T. N.; Trevisan, C. S.; Lucchese, R. R.; Gaire, B.; Menssen, A.; Schoeffler, M. S.; Gatton, A. S.; Neff, J.; Stammer, P. M.; Rist, J.; Eckart, S.; Berry, B.; Severt, T.; Sartor, J.; Moradmand, A.; Jahnke, Till; Landers, A. L.; Williams, J. B.; Ben-Itzhak, I.; Doerner, Reinhard; Belkacem, A.; Weber, Th (2017)
    A dramatic symmetry breaking in K-shell photoionization of the CF4 molecule in which a core-hole vacancy is created in one of four equivalent fluorine atoms is displayed in the molecular frame angular distribution of the ...
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    Understanding reliability and some limitations of the images and spectra reconstructed from a multi-monochromatic x-ray imager 

    Nagayama, Taisuke; Mancini, Roberto C.; Mayes, Daniel C.; Tommasini, R.; Florido, R. (2015)
    Temperature and density asymmetry diagnosis is critical to advance inertial confinement fusion (ICF) science. A multi-monochromatic x-ray imager (MMI) is an attractive diagnostic for this purpose. The MMI records the ...
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    Upgrade of repetitive fast-heating fusion driver HAMA to implode a shell target by using diode pumped solid state laser 

    Mori, Yoshitaka; Sekine, Takashi; Komeda, Osamu; Nishimura, Yasuhiko; Sunahara, Atsushi; Miura, Eisuke; Nakayama, Suisei; Hanayama, Ryohei; Ishii, Katsuhiro; Sato, Nakahiro; Kurita, Takashi; Kawashima, Toshiyuki; Kan, Hirofumi; Nakamura, Naoki; Kondo, Takuya; Fujine, Manabu; Azuma, Hirozumi; Hioki, Tatsumi; Kakeno, Mitsutaka; Kajino, Tsutomu; Motohiro, Tomoyoshi; Sentoku, Yasuhiko; Kitagawa, Yoneyoshi (2016)
    The HAMA is 1-Hz fast heating fusion driver pumped by a 10 J second-harmonic of diode-pumped Nd:glass laser: KURE-1. We have upgraded HAMA to realize an implosion of spherical shell target by using a remaining fundamental ...
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    Visible transitions in Ag-like and Cd-like lanthanide ions 

    Murata, Shunichi; Nakajima, Takayuki; Safronova, Marianna S.; Safronova, Ulyana I.; Nakamura, Nobuyuki (2017)
    We present visible spectra of Ag-like (4d(10)4f) and Cd-like (4d(10)4f(2)) ions of Ho (atomic number Z = 67), Er (68), and Tm (69) observed with a compact electron beam ion trap. For Ag-like ions, prominent emission ...
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    Zeptonewton force sensing with nanospheres in an optical lattice 

    Ranjit, Gambhir; Cunningham, Mark S.; Casey, Kirsten; Geraci, Andrew A. (2016)
    Optically trapped nanospheres in high vacuum experience little friction and hence are promising for ultrasensitive force detection. Here we demonstrate measurement times exceeding 10(5) s and zeptonewton force sensitivity ...