A5037105711- Laser-Plasma Interactions and Diagnostics
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Nuclear Physics and Applications
- Laser-induced spectroscopy and plasma
- Laser Design and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Atomic and Molecular Physics
- High-pressure geophysics and materials
- Advanced Optical Sensing Technologies
- Ion-surface interactions and analysis
- Nuclear physics research studies
- Atomic and Subatomic Physics Research
- Semiconductor materials and devices
- Solid-state spectroscopy and crystallography
- Organic and Molecular Conductors Research
- Electron and X-Ray Spectroscopy Techniques
- Optical Systems and Laser Technology
- Dark Matter and Cosmic Phenomena
- Heavy metals in environment
- Copper Interconnects and Reliability
- Nonlinear Optical Materials Research
- Radioactive contamination and transfer
- Advanced X-ray Imaging Techniques
Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
2009-2025
Extreme Light Infrastructure - Nuclear Physics
2018-2025
Institute for Physics
2024
Institutul de Fizică Atomică
2023-2024
Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes
2004-2015
Universidade de Santiago de Compostela
2014
European Organization for Nuclear Research
2011
National Institute of Materials Physics
2007
Paul Scherrer Institute
2007
Centre National de la Recherche Scientifique
2005
High power lasers have proven being capable to produce high energy gamma rays, charged particles and neutrons induce all kinds of nuclear reactions. At ELI, the studies with will enter for first time into new domains intensities.
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High-power laser systems have opened new frontiers in scientific research and revolutionized various fields, offering unprecedented capabilities for understanding fundamental physics allowing unique applications. This paper details the successful commissioning of 1 PW experimental area at Extreme Light Infrastructure–Nuclear Physics (ELI-NP) facility Romania, using both available arms. The setup featured a short focal parabolic mirror to accelerate protons through target normal sheath...
The DIRAC experiment at CERN has achieved a sizeable production of $\pi^+\pi^-$ atoms and significantly improved the precision on its lifetime determination. From sample 21227 atomic pairs, 4% measurement S-wave $\pi\pi$ scattering length difference $|a_0-a_2| = (.0.2533^{+0.0080}_{-0.0078}|_\mathrm{stat}.{}^{+0.0078}_{-0.0073}|_\mathrm{syst})M_{\pi^+}^{-1}$ been attained, providing an important test Chiral Perturbation Theory.
The production of neutron beams having short temporal duration is studied using ultraintense laser pulses. Laser-accelerated protons are spectrally filtered a laser-triggered microlens to produce pulse via nuclear reactions induced in converter material (LiF). This produces $\ensuremath{\sim}3\text{ }\text{ }\mathrm{ns}$ with ${10}^{4}\text{ }\mathrm{n}/\mathrm{MeV}/\mathrm{sr}/\mathrm{shot}$ at 0.56 m from the laser-irradiated proton source. large spatial separation between and source...
An atomic clock based on x-ray fluorescence yields has been used to estimate the mean characteristic time for fusion followed by fission in reactions $^{238}\mathrm{U}+^{64}\mathrm{Ni}$ at $6.6\text{ }\text{ }\mathrm{MeV}/\mathrm{A}$. Inner shell vacancies are created during collisions electronic structure of possibly formed $Z=120$ compound nuclei. The filling these accompanied a emission with energies can take place only if transitions occur before nuclear fission. Therefore, yield united...
The results of a search for hydrogen-like atoms consisting $\pi^{\mp}K^{\pm}$ mesons are presented. Evidence $\pi K$ atom production by 24 GeV/c protons from CERN PS interacting with nickel target has been seen in terms characteristic pairs their breakup the same ($178 \pm 49$) and Coulomb final state interaction ($653 42$). Using these analysis yields first value lifetime $\tau=(2.5_{-1.8}^{+3.0})$ fs model-independent measurement S-wave isospin-odd scattering length...
The observation of hydrogenlike πK atoms, consisting π^{-}K^{+} or π^{+}K^{-} mesons, is presented. atoms are produced by 24 GeV/c protons from the CERN PS accelerator, interacting with platinum nickel foil targets. breakup (ionization) in same targets yields characteristic pairs, called "atomic pairs," small relative momenta Q pair center-of-mass system. upgraded DIRAC experiment observed 349±62 such atomic corresponding to a signal 5.6 standard deviations. This first statistically...
Laser-driven neutron sources are routinely produced by the interaction of laser-accelerated protons with a converter. They present complementary characteristics to those conventional accelerator-based (e.g. short pulse durations, enabling novel applications like radiography). We here results from an experiment aimed at performing global characterization neutrons using Titan laser Jupiter Laser Facility (Livermore, USA), where were accelerated 23 $\mathrm {\mu }$ m thick plastic targets and...
We present evidence for the first observation of electromagnetically bound $\pi^\pm K^\mp$-pairs ($\pi K$-atoms) with DIRAC experiment at CERN-PS. The $\pi K$-atoms are produced by 24 GeV/c proton beam in a thin Pt-target and $\pi^\pm$ $K^\mp$-mesons from atom dissociation analyzed two-arm magnetic spectrometer. observed enhancement low relative momentum corresponds to production 173 $\pm$ 54 K$-atoms. mean life is related s-wave K$-scattering lengths, measurement which goal experiment. From...
After observing and investigating the double-exotic (a atom is a bound system, in which both oppositely charged components are unstable particles like μ,π,K,…) π+π− with ground state lifetime τ of about 3×10−15 s, upgraded DIRAC experiment at CERN PS accelerator observes for first time long-lived states same lifetimes 10−11 s more. The number characteristic pion pairs resulting from breakup (ionisation) atoms amounts to 436±61, corresponding signal-to-error ratio better than 7 standard...
In the present work moss biomonitoring technique and combination of two analytical techniques - Particle Induced X-ray Emission (PIXE) [3] Inductively Coupled Plasma (ICP) [4] were applied for assessing environmental situation from point view air polluting along transect north to south Dambovita County. PIXE analysis at Tandem Accelerator FN-8 National Institute Nuclear Physics Horia Hulubei Magurele, Bucharest, allowed determination P, S, Cl, K, Ca, Mn, Fe, Ni, Cu, Zn, As, Sr, Cd Pb in...
After having announced the statistically significant observation (5.6~$\sigma$) of new exotic $\pi K$ atom, DIRAC experiment at CERN proton synchrotron presents measurement corresponding atom lifetime, based on full data sample: $\tau = (5.5^{+5.0}_{-2.8}) \cdot 10^{-15}s$. By means a precise relation ($<1\%$) between lifetime and scattering length, following value for S-wave isospin-odd length $a_0^{-}~=~\frac{1}{3}(a_{1/2}-a_{3/2})$ has been derived: $\left|a_0^-\right|...
Nowadays, it is possible to accelerate bunches of particles in the interaction ultrahigh intensity (UHI) laser pulses with matter. Electrons, protons, ions, and high-energy photon beams can be produced experiments reach kinetic energies close hundreds megaelectronvolts for protons gigaelectronvolts electrons associated Bremsstrahlung photons. At these energies, induce a large variety nuclear reactions, which detected studied using y-ray spectroscopy techniques. standard accelerator...
Abstract Simultaneous particle‐induced x‐ray emission (PIXE) and gamma‐ray (PIGE) measurements in the 0–270 keV range with a low‐energy hyperpure Ge detector have been performed on outer surface an inner section of dental composite filling extracted from patient. The biomaterial has identified as fluorine‐releasing Tetric Ceram composite. Compared to native material, evidenced changes occurring during vivo oral use. These included mainly Cl K accumulation loss Zr, Ba, Yb (by PIXE), F (in...
The target normal sheath acceleration is a robust mechanism for proton and ion from solid targets when irradiated by high power laser. Since its discovery extensive studies have been carried out to enhance the process either optimizing laser pulse delivered onto or utilizing with particular features. Targets different morphologies such as geometrical shape (thin foil, cone, spherical, foam-like, etc.), structures (multi-layer, nano- micro-structured periodic striations, rods, pillars, holes,...
We present a novel scheme for rapid quantitative analysis of debris generated during experiments with solid targets following relativistic laser-plasma interaction at high-power laser facilities. Experimental data indicates that predictions by available modelling non-mass-limited are reasonable, on the order hundreds ug-per-shot. detect first time several % is ejected directional target normal (rear- and side); confirm previous work found ejection in direction side to be larger than rear.
In this work the Coulomb effects (Coulomb correlations) in $\pi^+\pi^-$ pairs produced p + Ni collisions at 24 GeV/$c$, are studied using experimental pair distributions $Q$, relative momentum center of mass system (c.m.s), and its projections $Q_L$ (longitudinal component) $Q_t$ (transverse to direction laboratory (l.s.). The $Q_L$, {\sl pairs} c.m.s. have been simulated assuming they described by phase space modified known point-like correlation function $A_C(Q)$, corrected for small due...