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We present a new approach for calculating electromagnetic excitation of nuclei as well as probabilities of emission and distributions of neutrons from decays of excited nuclear systems for ultrarelativistic, ultraperipheral heavy ion…

核理论 · 物理学 2015-06-17 Mariola Klusek-Gawenda , Michal Ciemala , Wolfgang Schafer , Antoni Szczurek

The inclusive energy distributions of fragments (4$\leq$Z$\leq$7) emitted in the reactions $^{16}$O (116 MeV) + $^{27}$Al, $^{28}$Si, $^{20}$Ne (145 MeV) + $^{27}$Al, $^{59}$Co have been measured in the angular range $\theta_{lab} $=…

We compute the collisional energy loss for a heavy quark above the critical temperature in Quantum ChromoDynamics (QCD). We work in the semi Quark-Gluon Plasma, which assumes that this region is dominated by the non-trivial holonomy of the…

高能物理 - 唯象学 · 物理学 2015-06-18 Shu Lin , Robert D. Pisarski , Vladimir V. Skokov

Transverse momentum (mass) spectra of positively and negatively charged pions, positively and negatively charged kaons, protons and antiprotons produced at mid-(pseudo)rapidity in various collisions at high energies are analyzed in this…

高能物理 - 唯象学 · 物理学 2020-06-16 Li-Li Li , Fu-Hu Liu , Muhammad Waqas , Rasha Al-Yusufi , Altaf Mujear

Two-particle rapidity (or pseudorapidity) correlation function $C(y_1, y_2)$ was used in analysing fluctuation of particle density distribution in rapidity in high-energy heavy-ion collisions. In our research, we argue that for a centrality…

核理论 · 物理学 2017-05-22 Ronghua He , Jing Qian , Lei Huo

From the data on baryon production in heavy-ion collisions it is shown that a set of measurable functions exist, one for each baryon type, that depend exponentially on transverse momenta up to the maximum values detected for all collision…

高能物理 - 唯象学 · 物理学 2023-06-22 Lilin Zhu , Hua Zheng , Ke Da , Huanjing Gong , Zhizhen Ye , Guiqi Liu , Rudolph C. Hwa

Calorimetric and coalescence techniques have been employed to probe equilibration for hot nuclei produced in heavy ion collisions of 35 to 55 MeV/u projectiles with medium mass targets. Entrance channel mass asymmetries and energies were…

A multifactor parameterization is described to permit the efficient calculation of collision efficiency (E) between electrically charged aerosol particles and neutral cloud droplets in numerical cloud and climate models. The four parameter…

大气与海洋物理 · 物理学 2015-10-28 S. N. Tripathi , S. Vishnoi , S. Kumar , R. G. Harrison

Hydrodynamic simulations are used to make predictions for the integrated elliptic flow coefficient v_2 in sqrt(s)=5.5 TeV lead-lead and sqrt(s)=14 TeV proton-proton collisions at the LHC. We predict a 10% increase in v_2 from RHIC to Pb+Pb…

核理论 · 物理学 2010-01-24 Matthew Luzum , Paul Romatschke

We show that a Gaussian Process model can be combined with a small number (of order 100) of scattering calculations to provide a multi-dimensional dependence of scattering observables on the experimentally controllable parameters such as…

化学物理 · 物理学 2015-08-19 Jie Cui , Roman V. Krems

We evaluate the full opacity dependence of collective flow in high-energy heavy-ion collisions within a microscopic kinetic description based on the Boltzmann equation in the conformal relaxation time approximation. By comparing kinetic…

高能物理 - 唯象学 · 物理学 2023-05-24 Victor E. Ambrus , S. Schlichting , C. Werthmann

We calculate the decoherence time of the ground state wave function of a nucleus in a high energy heavy ion collision. We define this time as the decay time of the ratio Tr D^2 / (Tr D)^2 of traces of the density matrix D. We find that this…

高能物理 - 唯象学 · 物理学 2008-11-26 Berndt Muller , Andreas Schafer

Time-dependent close-coupling calculations of the ionization and excitation cross section for antiproton collisions with molecular hydrogen ions are performed in an impact-energy range from 0.5 keV to 10 MeV. The Born-Oppenheimer and…

原子物理 · 物理学 2015-05-13 Armin Lühr , Alejandro Saenz

Hadron colliders offer a unique opportunity to test perturbative QCD because, rather than producing events at a specific beam energy, the dynamics of the hard scattering is probed simultaneously at a wide range of momentum transfers. This…

高能物理 - 唯象学 · 物理学 2008-11-26 W. T. Giele , E. W. N. Glover , J. Yu

Background: The cross section for forming a heavy evaporation residue in fusion reactions depends on the capture cross section, the fusion probability, PCN, i.e., the probability that the projectile-target system will evolve inside the…

核实验 · 物理学 2013-06-18 R. Yanez , W. Loveland , J. S. Barrett , L. Yao , B. B. Back , S. Zhu , T. L. Khoo

Emission lines from highly-excited states (n >= 5) of H- and He-like ions have been detected in astrophysical sources and fusion plasmas. For such excited states, R-matrix or distorted wave calculations for electron-impact excitation are…

天体物理仪器与方法 · 物理学 2016-08-17 L. Fernandez-Menchero , G. Del Zanna , N. R. Badnell

The role of the exchange-correlation potential and the exchange-correlation kernel in the calculation of excitation energues from time-dependent density functional theory is studied. Excitation energies of the He and Be atoms are…

材料科学 · 物理学 2007-05-23 Martin Petersilka , E. K. U. Gross , Kieron Burke

We present a detailed comparison of coalescence and thermal-statistical models for the production of (anti-)(hyper-)nuclei in high-energy collisions. For the first time, such a study is carried out as a function of the size of the object…

高能物理 - 唯象学 · 物理学 2019-06-05 Francesca Bellini , Alexander Philipp Kalweit

Energy dependence of quark transverse flow carries information about dynamical properties (equation of state, initial conditions) of deconfined matter produced in heavy ion collisions. We assume quark-antiquark matter formation in Pb+Pb…

核理论 · 物理学 2009-11-10 P. Csizmadia , P. Levai

It is the aim of this paper to discuss the impact of nuclear fusion on the EOS. This is a timely subject given the expected availability of increasingly exotic beams at rare isotope facilities\,\cite{balantekin2014}. In practice, we focus…