Search Results - (Author, Cooperation:R. W. Falcone)

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  1. 1
    Staff View
    Publication Date:
    2012-01-27
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2018-12-15
    Publisher:
    American Physical Society (APS)
    Print ISSN:
    0031-9007
    Electronic ISSN:
    1079-7114
    Topics:
    Physics
    Keywords:
    Condensed Matter: Structure, etc.
    Published by:
    http://www.aps.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    J. E. Katz ; X. Zhang ; K. Attenkofer ; K. W. Chapman ; C. Frandsen ; P. Zarzycki ; K. M. Rosso ; R. W. Falcone ; G. A. Waychunas ; B. Gilbert
    American Association for the Advancement of Science (AAAS)
    Published 2012
    Staff View
    Publication Date:
    2012-09-08
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Staff View
    ISSN:
    1089-7674
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Details of schemes for two tabletop size x-ray lasers that require a high-intensity short-pulse driving laser are discussed. The first is based on rapid recombination following optical-field ionization. Analytical and numerical calculations of the output properties are presented. Propagation in the confocal geometry is discussed and a solution for x-ray lasing in Li-like N at 247 A(ring) is described. Since the calculated gain coefficient depends strongly on the electron temperature, the methods of calculating electron heating following field ionization are discussed. Recent experiments aimed at demonstrating lasing in H-like Li at 135 A(ring) are discussed along with modeling results. The second x-ray laser scheme is based on the population inversion obtained during inner-shell photoionization by hard x rays. This approach has significantly higher-energy requirements, but lasing occurs at very short wavelengths (λ≤15 A(ring)). Experiments that are possible with existing lasers are discussed.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.870936

    Articles: DFG German National Licenses
  5. 5
    Wülker, C. ; Theobald, W. ; Gnass, D. R. ; Schäfer, F. P. ; Bakos, J. S. ; Sauerbrey, R. ; Gordon, S. P. ; Falcone, R. W.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1996
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The interaction of subpicosecond KrF-laser pulses with polished and colloidal metal surfaces at an intensity of 8×1015 W/cm2 was investigated experimentally. The measurements with spectral and temporal resolution for the colloidal targets showed a higher energy conversion efficiency into soft x rays and an increase in x-ray pulse lengths. © 1996 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.115927

    Articles: DFG German National Licenses
  6. 6
    Murnane, M. M. ; Kapteyn, H. C. ; Falcone, R. W.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1990
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We have developed an x-ray streak camera system with a temporal response of 2 ps (full width at half maximum). The response of the camera was measured using soft x rays in the 30 eV to 1 keV energy range which were emitted from a plasma created by a high-intensity, subpicosecond laser pulse. A single shot, resolution-limited, relative timing precision of 0.2 ps was demonstrated for x-ray emission events.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.103031

    Articles: DFG German National Licenses
  7. 7
    Zigler, A. ; Underwood, J. H. ; Zhu, J. ; Falcone, R. W.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1987
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The spacing of layers in a sputtered, multilayer structure was rapidly and permanently increased by heating with a nanosecond laser pulse. During laser heating, the Bragg angle decreased and the peak reflectivity increased for diffraction of soft x-ray radiation at 4.4 nm. Measurements were made using a time and space resolving x-ray streak camera detector.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.98496

    Articles: DFG German National Licenses
  8. 8
    Murnane, M. M. ; Kapteyn, H. C. ; Gordon, S. P. ; Bokor, J. ; Glytsis, E. N. ; Falcone, R. W.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1993
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We demonstrate a new technique for enhancing the absorption of high-intensity, ultrashort-duration laser pulses by solids. Targets consisting of gold gratings and gold clusters were found to absorb greater than 90% of the incident high-intensity laser light. This is in contrast to less than 10% absorption by flat surfaces. As a result of this strong coupling of the laser to a high-density plasma, conversion efficiency of laser energy to x rays of greater than 1% was observed for x rays above 1 keV. Efficiency of nearly 25% was observed for emissions greater than 30 eV. These conversion efficiencies are more than an order of magnitude greater than those measured from flat targets.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.108797

    Articles: DFG German National Licenses
  9. 9
    Staff View
    ISSN:
    1432-0649
    Keywords:
    52.25.Nr ; 34.80.Kw ; 52.40.Nk ; 52.50Jm
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract In this paper, we discuss recent advances in ultrashort-pulse X-ray technology. Femtosecond laser-plasma based X-ray sources can now generate sub-pico-second soft X-ray pulses, with photon energies from ≈ 10 eV to ≈ 106 eV, and with a high conversion efficiency of incident laser light to broadband X-rays. Recent advances in high-speed X-ray detectors and soft X-ray optics make it practical to use such sources as experimental tools for time-resolved X-ray science. Other possible generation techniques, such as laser-electron-beam scattering, promise to further expand the experimental capabilities in this area.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01081318

    Articles: DFG German National Licenses