Icks, M. 2008. Images of Elagabalus. PhD thesis, Radboud University Nijmegen, 339 p. Promotores: prof.dr. L. de Blois, prof.dr. E.M. Moormann, prof.dr. S.A. Levie, Radboud University Nijmegen.

Icks, Martijn

doi:10.1163/002670710x12604263128363

Cited by 2 publications

(4 citation statements)

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“…In particular, pulsed streamers have been shown to have the ability to be very efficient for remediation of small amounts of impurities in gases due to the efficient production of reactive species and radicals [3]. As streamers are filaments which are highly transient in time, have a minimum diameter of the order of 100 µm [4] and are produced randomly in space, their physical properties have mainly been investigated by imaging, emission spectroscopy and electrical characterization [5][6][7]. During the propagation phase of the streamer, the electrons in the head of the streamer have high energies which drive both the ionization and dominate the production of excited species and thus the emission of the streamer.…”

Section: Introductionmentioning

confidence: 99%

Electron densities and energies of a guided argon streamer in argon and air environments

Hübner¹,

Hofmann²,

Veldhuizen³

et al. 2013

Plasma Sources Sci. Technol.

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In this study we report the temporally and spatially resolved electron densities and mean energies of a guided argon streamer in ambient argon and air obtained by Thomson laser scattering. The plasma is driven by a positive monopolar 3.5 kV pulse, with a pulse width of 500 ns and a frequency of 5 kHz which is synchronized with the high repetition rate laser system. This configuration enables us to use the spatial and temporal stability of the guided streamer to accumulate a multitude of laser/plasma shots by a triple grating spectrometer equipped with an ICCD camera and to determine the electron parameters. We found a strong initial n e -overshoot with a maximum of 7 × 10 19 m −3 and a mean electron energy of 4.5 eV. This maximum is followed by a fast decay toward the streamer channel. Moreover, a 2D distribution of the electron density is obtained which exhibits a peculiar mushroom-like shape of the streamer head with a diameter significantly larger than that of the emission profile. A correlation of the width of the streamer head with the expected pre-ionization channel is found.

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Section: Introductionmentioning

confidence: 99%

Electron densities and energies of a guided argon streamer in argon and air environments

Hübner¹,

Hofmann²,

Veldhuizen³

et al. 2013

Plasma Sources Sci. Technol.

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“…The experimental set up allows an efficient reconstruction of these events [13]. As demonstrated in figure 1, the Z distribution of fragments from the reaction 32 S (45 MeV/nucleon)+ 112 Sn calculated via the DIT+SMM model framework (without the FAUST detector filtering) deviates from the experimental data for fragments larger than Z = 8.…”

Section: Methodsmentioning

confidence: 96%

“…Events were considered where the total charge of the reconstructed quasiprojectile was equal to that of the beam, Z = 16. This constraint has been shown to produce a single well-defined equilibrated source [12][13][14]. For the study presented in this paper, further constraints were placed on the source selection for better comparison with the theoretical model framework DIT+SMM (deep-inelastic transfer and statistical multifragmentation model, see below).…”

Section: Methodsmentioning

confidence: 99%

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Multifragmentation of reconstructed quasi-projectiles in the mass region A ∼ 30

Soisson¹,

Botvina²,

Souliotis³

et al. 2012

J. Phys. G: Nucl. Part. Phys.

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The production of fragments from a broad range of reconstructed quasiprojectiles obtained in the interaction of 32 S (45 MeV/nucleon) with 112 Sn was studied. A good description of the experimental data on the multifragmentation of these light quasi-projectiles with a model framework based on deep inelastic transfer followed by SMM (statistical multifragmentation model) was obtained. The charge and mass distributions of the observed fragments show that the break-up of a given quasi-projectile source is highly correlated to its isospin composition. The sensitivity of the hot primary fragments to the symmetry energy was investigated in detail. It was found that for the present light systems (A∼30), a good description of the experimental data on the charge distributions, the N/Z distributions and the isotopic distributions of the fragments is obtained by the SMM calculations involving the standard (C sym = 25 MeV), as well as, a reduced value of the symmetry energy (C sym = 8 MeV). However, the reduced value of the symmetry energy appears to provide a better description of the isotopic distributions in most of the cases. This is in agreement with an overall reduction of the symmetry energy of primary fragments indicated by a number of multifragmentation studies of heavier systems.

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Icks, M. 2008. Images of Elagabalus. PhD thesis, Radboud University Nijmegen, 339 p. Promotores: prof.dr. L. de Blois, prof.dr. E.M. Moormann, prof.dr. S.A. Levie, Radboud University Nijmegen.

Cited by 2 publications

References 0 publications

Electron densities and energies of a guided argon streamer in argon and air environments

Electron densities and energies of a guided argon streamer in argon and air environments

Multifragmentation of reconstructed quasi-projectiles in the mass region A ∼ 30

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