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Search: WFRF:(Huller S.)

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1.
  • Mahata, K., et al. (author)
  • Study of dipole excitations and the single particle structure of neutron rich Ni isotopes
  • 2008
  • In: AIP Conference Proceedings. - 1551-7616 .- 0094-243X. ; 1012, s. 389-391 453
  • Conference paper (peer-reviewed)abstract
    • An experiment was performed using the FRS-LAND setup at GSI to study the dipole strength distributions above neutron separation threshold for neutron-rich Ni isotopes. Measurements, using the same experimental setup, were also carried out to extract single particle occupancies via knockout reactions to investigate the structure and magicity of the neutron-rich Ni isotopes. The status of the data analysis and preliminary results are presented.
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2.
  • Hergott, JF, et al. (author)
  • XUV interferometry using high-order harmonics: Application to plasma diagnostics
  • 2001
  • In: Laser and Particle Beams. - 0263-0346. ; 19:1, s. 35-40
  • Journal article (peer-reviewed)abstract
    • In this paper, we present and compare the two different XUV interferometric techniques using high-order harmonics that have been developed so far. The first scheme is based on the interference between two spatially separated phase-locked harmonic sources while the second uses two temporally separated harmonic sources. These techniques have been applied to plasma diagnostics in feasibility experiments where electron densities up to a few 1020 e[minus sign/cm3 have been measured with a temporal resolution of 200 fs. We present the main characteristics of each technique and discuss their respective potentials and limitations.
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3.
  • Merdji, H., et al. (author)
  • Coherence properties of high-order harmonics : Application to high-density laser-plasma diagnostic
  • 2000
  • In: Laser and Particle Beams. - 0263-0346. ; 18:3, s. 495-502
  • Journal article (peer-reviewed)abstract
    • We present two interferometry schemes in the extreme ultraviolet, based on either the wave-front division of a unique harmonic beam (1st scheme) or two spatially separated, phase-locked harmonic sources (2nd scheme). In the first scheme using a Fresnel bimirror interferometer, we measure the degree of spatial coherence of the 13 th harmonic generated in xenon, as a function of different parameters. A high degree of coherence, larger than 0.5, is found for the best conditions in almost the full section of the beam. Then, we demonstrate that the second scheme can be used for interferometry measurements with an ultrahigh time resolution. The 11th harmonic is used to study the spatial variation of the electron density of a laser-produced plasma. Electronic densities higher than 2.10 20 cm -3 are measured.
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  • Result 1-3 of 3

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