References of "Garnir, Henri-Pierre"
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See detailRadiative lifetimes, branching fractions and transition probabilities in Ge I. Solar implications
Biémont, Emile ULg; Lynga, C.; Li, Z. S. et al

in Monthly Notices of the Royal Astronomical Society (1999), 303

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See detailAtomic Lifetimes and Transition Probabilities in Boron-like (Na VII) and Beryllium-like (Na VIII) Sodium Ions
Tordoir, Xavier ULg; Biémont, Emile ULg; Garnir, Henri-Pierre ULg et al

in European Physical Journal D -- Atoms, Molecules, Clusters & Optical Physics (1999), 6

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See detailRadiative lifetimes, branching ratios and transition probabilities in Ge I.
Biémont, Emile ULg; Doidge, P. S.; Garnir, Henri-Pierre ULg et al

Conference (1998, August)

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See detailAtomic Lifetimes of n=2 Levels of Boron-like Na
Tordoir, Xavier ULg; Biémont, Emile ULg; Garnir, Henri-Pierre ULg et al

Conference (1998, August)

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See detailThe Spectra Ne IV, Ne V ans Ne VI
Kramida, A. E.; Bastin, Thierry ULg; Biémont, Emile ULg et al

Conference (1998)

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See detailLifetimes and oscillator strengths for ultravilolet transitions in neutral sulfur
Biémont, Emile ULg; Garnir, Henri-Pierre ULg; Federman, S. R. et al

in Astrophysical Journal (1998), 502

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See detailDetermination of radiative lifetimes of neutral sulphur by time-resolved three-photon VUV laser spectroscopy
Li, Z. S.; Persson, A.; Svanberg, S. et al

in European Physical Journal D -- Atoms, Molecules, Clusters & Optical Physics (1998), 2

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See detailSpectroscopy of Ne IV in the wavelength Range 450–1100 Å
Bastin, Thierry ULg; Biémont, Emile ULg; Dumont, Paul-Dominique ULg et al

in Journal of the Optical Society of America. B, Optical Physics (1997), 14

An analysis of the Ne IV spectrum was undertaken in the 450–1100-Å spectral range. The spectra were produced by the beam–foil method with beam energies of 1.2 and 2.5 MeV, respectively. The resolution ... [more ▼]

An analysis of the Ne IV spectrum was undertaken in the 450–1100-Å spectral range. The spectra were produced by the beam–foil method with beam energies of 1.2 and 2.5 MeV, respectively. The resolution that was achieved, with a normal-incidence 2-m spectrometer, was sufficient to identify 53 new Ne IV lines and, consequently, to determine 18 new levels in the quartet and doublet systems and one sextet term. The energy values of 13 additional levels were also revised. The classification work was facilitated by the use of scaled relativistic Hartree–Fock calculations. [less ▲]

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See detailAutomatic external filling for the ion source gas bottle of a Van de Graaff accelerator
Bastin, Thierry ULg; Dehove, C.; Dumont, Paul-Dominique ULg et al

in Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms (1997), 129

We describe a fully automatic system we developed to fill, from an external gas bottle, the ion sourer terminal gas storage bottle of a 2 MV Van de Graaff accelerator without depressing the 25 bar ... [more ▼]

We describe a fully automatic system we developed to fill, from an external gas bottle, the ion sourer terminal gas storage bottle of a 2 MV Van de Graaff accelerator without depressing the 25 bar insulating gas. The system is based on a programmable automate ordering electropneumatical valves. The only manual operation is the connection of the external gas cylinder. The time needed for a gas change is reduced to typically 15 min (depending on the residual pressure wished for the gas removed from the terminal bottle). To check this system we study the ionic composition of the ion beam delivered by our accelerator after different gas changes. The switching magnet of our accelerator was used to analyse the ionic composition of the accelerated beams in order to verify the degree of elimination of the previous gases in the system. (C) 1997 Elsevier Science B.V. [less ▲]

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See detailThe Spectrum of Ne V
Bastin, Thierry ULg; Biémont, Emile ULg; Dumont, Paul-Dominique ULg et al

in Physica Scripta (1997), 55

A new investigation of the Ne V spectrum is reported. The beam-foil method has been used to produce spectra at two different energies (1.2 MeV and 2.5 MeV) between 450 and 11OOA Sixty-five lines of Ne V ... [more ▼]

A new investigation of the Ne V spectrum is reported. The beam-foil method has been used to produce spectra at two different energies (1.2 MeV and 2.5 MeV) between 450 and 11OOA Sixty-five lines of Ne V have been newly identified. Fifty levels have been determined for the first time and energies have been revised for seven levels. [less ▲]

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See detailDye Laser Wavelength Scanning
Carapelle, Alain ULg; Bastin, Thierry ULg; Garnir, Henri-Pierre ULg et al

Poster (1996)

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See detailNew Level Determinations in Ne V
Bastin, Thierry ULg; Biémont, Emile ULg; Dumont, Paul-Dominique ULg et al

Poster (1996)

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See detailThe Spectrum of Ne V
Bastin, Thierry ULg; Biémont, Emile ULg; Dumont, Paul-Dominique ULg et al

Poster (1996)

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See detailNew Studies and Progress in Ne IV, V and VI Term Analysis
Bastin, Thierry ULg; Biémont, Emile ULg; Dumont, Paul-Dominique ULg et al

in Proceedings of the 5th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas (1996)

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See detailLifetime Measurement by Beam-Foil Spectroscopy
Garnir, Henri-Pierre ULg; Bastin, Thierry ULg; Dumont, Paul-Dominique ULg

in Phys. Scr. (1996), T65

The beam-foil source can produce spectra of almost every ion and allows easy measurement of atomic lifetimes of excited levels. Beam-foil spectra have some unique characteristics that made them valuable ... [more ▼]

The beam-foil source can produce spectra of almost every ion and allows easy measurement of atomic lifetimes of excited levels. Beam-foil spectra have some unique characteristics that made them valuable tool for the term analysis of highly charged ions. As an example, we will describe the work undertaken at Liège on Ne IV and Ne V. Beam-foil is still the only general method for measuring the lifetime of atomic levels in highly charged ions. However, the accuracy of the classical beam-foil method is limited by the non-selective broadband excitation in the foil that populates almost all excitation levels up to very high energy and corrupts by cascading phenomena the normal single-exponential decay curves. We will describe some techniques that have been invented to obviate this infamous “cascading effect”, especially the beam-foil-laser spectroscopy method recently developed in our laboratory. We will present an overview of the beam-foil spectroscopy research performed at the University of Liège together with other recent trends in the field of fast-beam spectroscopy. [less ▲]

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See detailA computer controlled PIGE setup for the analysis of thin samples
Strivay, David ULg; Garnir, Henri-Pierre ULg; Weber, Georges

in Nuclear Instruments & Methods in Physics Research Section B (1996), 113(1-4), 407-410

A computer controlled PIGE setup has been improved by adding a beam energy disperser which whips out most of the structure of the proton excitation functions and allows better analysis of thin samples.

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