A5026283674- Archaeology and ancient environmental studies
- Nuclear physics research studies
- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- Geology and Paleoclimatology Research
- Astronomical and nuclear sciences
- Ancient and Medieval Archaeology Studies
- Astrophysics and Cosmic Phenomena
- Marine and environmental studies
- Dark Matter and Cosmic Phenomena
- Building materials and conservation
- Cultural Heritage Materials Analysis
- Ancient Mediterranean Archaeology and History
- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Ionosphere and magnetosphere dynamics
- Nuclear Materials and Properties
- Geophysics and Gravity Measurements
- Quantum Chromodynamics and Particle Interactions
- Pleistocene-Era Hominins and Archaeology
- Advanced Chemical Physics Studies
- Forensic Anthropology and Bioarchaeology Studies
- Paleopathology and ancient diseases
- Computational Physics and Python Applications
- Conservation Techniques and Studies
Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
2014-2025
ASTRA National Museum Complex
2019
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2014
CEA Cadarache
2014
Direction des énergies
2014
University of Bucharest
2008-2012
FZI Research Center for Information Technology
2009
The recent high-precision measurements of alpha-particle induced reaction data below the Coulomb barrier (B) make possible understanding limits and improvement a previous optical model potential (OMP) for alpha-particles on nuclei within mass number range 45<A<209 [M. Avrigeanu et al., Phys. Rev. C 82, 014606 (2010)]. An updated version this is given in present work concerning mainly an increased surface imaginary depth well B A>130. Moreover, underestimation cross sections well-deformed...
The stone Ensemble from Corbii de Piatrǎ Romania arouses a continuous scientific interest, with the final goal being to obtain an exhaustive and multidisciplinary package of results that will become support extensive restoration project. cave painting stands out as most important affected by advanced degradation among historical monuments in Romania. This article provides for first time radiocarbon dating forms establishing age mortar/plaster used pictorial support. Being very complex...
In the frame of refined prompt neutron emission models used for evaluation purposes, partition total excitation energy (TXE) between fully accelerated fission fragments plays an important role. this work TXE complementary is obtained by taking into account components at scission. The method consists two steps: calculation additional deformation energies nascent (which are relaxed full acceleration) and available scission (obtained subtracting calculated from TXE) assuming statistical...
The activation cross sections for production of $^{51}\mathrm{Cr}$, $^{52,54,56}\mathrm{Mn}$, $^{59}\mathrm{Fe}$, and $^{55,56,57,58}\mathrm{Co}$ radioisotopes in deuteron-induced reactions on natural Fe were measured at deuteron energies up to 20 MeV. Then, within an extended analysis interactions with ${}^{\mathrm{nat}}$Fe, all processes from elastic scattering until the evaporation fully equilibrated compound system have been taken into account. Following available elastic-scattering data...
The muon charge ratio of the lateral density distributions in single EAS is studied by simulations, context recent proposals to measure this observable coincidence with observations. While effects hadronic interaction do not lead significant differences total μ+ and μ− content, azimuthal variation densities opposite charges appear be very much pronounced, dependent on direction incidence. This due influence geomagnetic field which induces related radio emission from extended air showers.
As output of the Point by model (taking into account entire fission fragment range) and most probable fragmentation approach (working with one average values parameters) not only prompt neutron quantities are provided but also γ-ray energy as a function Eγ(A) total <Eγ>. The almost linear behaviour <Eγ> multiplicity was observed experimentally in incident range where first chance is involved. This parameterised Z A fissioning nucleus. parameterisation validated calculations frame approach....
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...
An updated optical potential is thus provided for α-particles on nuclei within the mass number range 45≤A≤209, below Coulomb barrier (B), basis of recent high-precision measurements α-particle induced reaction data B that made possible understanding actual limits and improvement optical-model potentials. The main revision concerns actually only surface imaginary depth at lowest energies well B, in fact above A∼130. A further regional point underestimation cross sections rare-earth by using...
An extended analysis of the nuclear reaction mechanisms involved within deuteron interaction with nuclei, namely breakup, stripping, pick-up, pre-equilibrium emission, and evaporation from fully equilibrated compound nucleus, is presented in order to highlight importance direct still neglected deuteron-induced surrogate reactions. Particularly, dominance breakup mechanism at low energies around Coulomb barrier should be considered case (d,x) reactions on actinide target nuclei.
ABSTRACT We present a comparative study on 700-yr sequence of dendrochronologically ordered tree-rings Pinus cembra originating from Eastern Carpathians for the period AD 1009–1709. This covers solar minima Little Ice Age. The aim this was to assess accuracy our radiocarbon ( 14 C) determinations interpreted IntCal13 calibration data and observe any apparent offsets. C measurements single double were “wiggle-matched” secure dendrochronology cross-matching all wood pieces. results showed very...
A competition of the low-energy Coulomb excitation (CE) with compound nucleus (CN) formation in $α$-induced reactions below barrier has been assumed by Rauscher [Phys. Rev. Lett. 111, 061104 (2013)] order to use same optical model (OM) potential for description latter and alpha-particle emission as well. In this Comment we show that corresponding partial waves integration radii provide evidence distinct account CE cross section OM total-reaction section.
Datarea radiocarbon prin metoda spectrometriei de masǎ cu ioni acceleraţi AMS, folositǎ din 2012 la IFIN-HH Mǎgurele, a oferit recent cadrul ştiinţific pentru un studiu interdisciplinar, atât punct vedere arheologic cât şi arheometric, aplicat unor materiale lemn sau derivaţi ai lemnului. Primele rezultate calibrate obţinute pe şase eşantioane prelevate Mǎguricea Branului în 2021 au plasat majoritatea probelor într-un interval jurul secolului al XIII-lea, unele diferenţe putând fi explicate...
We have started working on describing the chronological and cultural Neolithic-Chalcolithic sequence in northern Dobrudja during French-Romanian archaeological mission "Archéologie du delta Danube" (Danube Delta Archaeology) alongside Associated International Laboratory (IRP GOCHE). Currently, these attempts are focused studying again ancient collections publishing them as monographs. After 20212, Gumelnița culture, with study of Carcaliu Trestenic sites. More recently, we resulting from...
A competition of the low-energy Coulomb excitation (CE) with compound nucleus (CN) formation in α-induced reactions below barrier has recently been assumed order to make possible description latter as well α-particle emission by same optical model (OM) potential. However, we show present work that corresponding partial waves and integration radii provide evidence for distinct account CE cross section OM total-reaction σR. Thus largest contribution comes far from larger than ones contributing...
Abstract The preventive archaeological researches of 2011 led to sensational discoveries. These include evidence for the extraction radiocarbon data. We analyze new from periods: neolithic and eneolithic (Turdaş culture), (Petreşti culture) classical dacian period (1st century AD).
The present work concerns two successful models used today: Point by (PbP) and the Monte Carlo approaches. description of PbP model extended Los Alamos for higher energies that takes into account secondary chains ways is given in Chapter II. In this chapter are also examples most probable fragmentation approach calculations various quantities which characterize prompt emission: multi-parametric matrices, as a function fragment mass, TKE total average quantities, different spontaneous neutron...