n.abdallah

أ. د. نبيل نور الدين عبداللاه

استاذ - رئيس جامعة سوهاج السابق

كلية العلوم

العنوان: سوهاج -

3

إعجاب
2015 | الكلمات المفتاحية
EOS of Neutron Matter and Neutron Star Properties
The Equation of State (EOS) of pure neutron matter at zero temperature is calculated up to five saturation densities within the Brueckner theory with the inclusion of three-body forces. Three different realistic and accurate two-body forces are considered to evaluate the G-matrix effective interaction for nuclear matter. These models are the chiral N3LO, the CD-Bonn and the Argonne V18, which ... إقراء المزيد

2013 | الكلمات المفتاحية The emulsion,
Multiplicity distributions of shower particles and target fragments in Li-Em collisions at 3 A GeV/c.
Multiplicity distributions of shower particles and target fragments in Li-Em (emulsion) collisions at 3 A GeV/c are experimentally studied. In the framework of the multisource thermal model, the multicomponent Erlang distribution is used to describe the experimental multiplicity distributions of shower particles, grey fragments, black fragments, and heavily ionized fragments. The correlations between these multiplicities are experimentally reported. With the ... إقراء المزيد

2013 | الكلمات المفتاحية The emulsion, multiplicity,
Multiplicity distributions of shower particles and target fragments in 7Li–Em collisions at 3 A GeV/c
Multiplicity distributions of shower particles and target fragments in 7Li–Em (emulsion) collisions at 3 A GeV/c are experimentally studied. In the framework of the multisource thermal model, the multicomponent Erlang distribution is used to describe the experimental multiplicity distributions of shower particles, grey fragments, black fragments, and heavily ionized fragments. The correlations between these multiplicities are experimentally reported. With the ... إقراء المزيد

2011 | الكلمات المفتاحية The emulsion, event Fluctuations,
Unified Description of Event-by-event Fluctuations in Some Global Observables in Nucleus-nucleus Collisions at High Energies
Event-by-event fluctuations in global observables are an important topic in nucleus-nucleus collisions at high energies. These observables include the multiplicity, total transverse energy, mean transverse energy, mean transverse momentum, etc. Fluctuations in different interacting systems have different strengths and shapes. Interacting systems with different incident nuclei and energies are expected to have different fluctuations. Especially, for systems with different interacting ... إقراء المزيد

2011 | الكلمات المفتاحية black, grey,
Various flows of black and grey particles produced in Mg-emulsion collisions at 4.5 A GeV/c
Various flow phenomena of black particles (b-particles) and grey particles (g-particles) produced in magnesium-emulsion (Mg-Em) collisions at 4.5 A GeV/c are reported. These flows are directed and elliptic transverse flows (v 1 and v 2) related by the azimuthal angle (phgr), directed and elliptic reaction plane flows (v R1 and v R2) related by the projected angle (ψ) on the ... إقراء المزيد

2010 | الكلمات المفتاحية dijet, an enhancement,
Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at  √ s NN = 2.76     TeV  with the ATLAS Detector at the LHC
By using the ATLAS detector, observations have been made of a centrality-dependent dijet asymmetry in the collisions of lead ions at the Large Hadron Collider. In a sample of lead-lead events with a per-nucleon center of mass energy of 2.76 TeV, selected with a minimum bias trigger, jets are reconstructed in fine-grained, longitudinally segmented electromagnetic and hadronic calorimeters. The transverse ... إقراء المزيد

2010 | الكلمات المفتاحية cross sections,
Combined measurement and QCD analysis of the inclusive e ± p scattering cross sections at HERA
A combination is presented of the inclusive deep inelastic cross sections measured by the H1 and ZEUS Collaborations in neutral and charged current unpolarised _e_±_p_scattering at HERA during the period 1994-2000. The data span six orders of magnitude in negative four-momentum-transfer squared, _Q_2, and in Bjorken _x_. The combination method used takes the correlations of systematic uncertainties into account, resulting ... إقراء المزيد

2009 | الكلمات المفتاحية the unusual fluctuation,
Intermittency of Target Fragments in 24Mg-AgBr Interactions at 4.5 A GeV/c
Intermittency is a power law of the scaled factorial moments (SFMs) with decreasing phase space bin size, which was introduced by Bialas and Peschanski [1, 2] to resolve the unusual fluctuation in a cosmic ray event observed by the JACEE Collaboration [3]. It is capable of extracting non-statistical fluctuations after elimination of the statistical part and revealing self-similarity and indicating ... إقراء المزيد

2009 | الكلمات المفتاحية inelastic scattering,
Deep inelastic scattering with leading protons or large rapidity gaps at HERA
The dissociation of virtual photons, γ⋆p→Xp, in events with a large rapidity gap between X and the outgoing proton, as well as in events in which the leading proton was directly measured, has been studied with the ZEUS detector at HERA. The data cover photon virtualities Q2>2 GeV2 and γ⋆p centre-of-mass energies 40X>2 GeV, where MX is the mass of ... إقراء المزيد

2008 | الكلمات المفتاحية black fragment,
Target black fragment flows in magnesium-emulsion collisions at 4.5 A GeV/c
The experimental results of polar, azimuthal, and projected angular distributions of target black fragments produced in magnesium-emulsion collisions at 4.5_A_ GeV/_c_ (the Dubna synchrophasotron momentum) are reported. The flow characteristics are obtained. The azimuthal and projected angular distributions as well as some relationships between flows and angles depend on the size of target in the case of considering both light ... إقراء المزيد