We demonstrate an optical unstable phase for a laser driven erbium ion ensemble. The transmitted light through erbium-doped yttrium orthosillicate crystal becomes dynamically when illuminated by strong continuous-wave laser. Transient net gain was recorded if the passes sample twice. experimental results are understood in framework of many-body system interacting with classical field, where ion...

We report on the first laser cooling of a bunched beam of multiply charged C ions performed at the ESR (GSI) at a beam energy of E = 1.47GeV. Moderate bunching provided a force counteracting the decelerating laser force of one counterpropagating laser beam. This versatile type of laser cooling lead to longitudinally space-charge dominated beams with an unprecedented momentum spread of ∆p/p ≈ 10...

We investigate theoretically the high-order harmonic spectrum extension and numerical generation of an intense isolated attosecond pulse from He+ ion irradiated by a two-color laser field. Our simulation results show that the chirp of the fundamental field can control HHG cutoff position. Also, these results show that the envelope forms of two fields are important factors for controlling the re...

The ECLISSE experiment proved in 2002 the possibility to couple a Laser Ion Source (LIS) with an Electron Cyclotron Resonance Ion Source (ECRIS) in order to obtain ion beams from refractory metals with a cw beam structure. The use of a LIS inside the ECRIS plasma chamber may permit to increase the beam current and the ion charge state. The use of 3 generation ECRIS may extend the capabilities o...

Intense heavy ion beams from the Gesellschaft für Schwerionenforschung ~GSI, Darmstadt, Germany! accelerator facilities, together with two high energy laser systems: petawatt high energy laser for ion experiments ~PHELIX! and nanosecond high energy laser for ion experiments ~NHELIX! are a unique combination to facilitate pioneering beam-plasma interaction experiments, to generate and probe high...

The effects of laser fluence on ion formation in MALDI were studied using a tandem TOF mass spectrometer with a Nd-YAG laser and alpha-cyano hydrocinnamic acid matrix. Leucine enkephalin ionization and fragmentation were followed as a function of laser fluence ranging from the threshold of ion formation to the maximum available, that is, about 280-930 mJ/mm2. The most notable finding was the ap...

A cryogenically cooled linear electrostatic ion beam trap for use in photoelectron-photofragment coincidence (PPC) spectroscopy is described. Using this instrument, anions created in cold, low-duty-cycle sources can be stored for many seconds in a ~20 K environment to cool radiatively, removing energetic uncertainties due to vibrationally excited precursor anions. This apparatus maintains a wel...

Experiments have been carried out to characterize furlher the properties of a new laser-ablation-assisted-plasma-discharge source of metallic aluminium ions. Laser ablation is accomplished by focusing a KrF excimer laser (e 1.2 J, 40 ns, 248 nm) onto a solid aluminium target with a fluence of approximately 10 J m i 2 . Through gated optical emission spectroscopy, the laser ablation plume optica...