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We implement an independent-atom and independent-electron model to investigate the collision systems of He$^{2+}$ and He$^{+}$ ion projectiles impinging on a neon dimer target. The dimer is set to be stationary at its equilibrium bond…

原子与分子团簇 · 物理学 2025-05-13 Darij Starko , Tom Kirchner

In order to interpret and predict the behavior and properties of fusion plasma, accurate cross sections for electronic processes in collisions between plasma impurities and atomic hydrogen are required. In this work, we investigate the…

原子物理 · 物理学 2024-12-30 C. C. Jia , Y. Y. Qi , J. J. Niu , Y. Wu J. G. Wang , A. Dubois , N. Sisourat , J. W. Gao

Interactions of protons with nuclei are modeled in a form that is suitable for Monte Carlo simulation of proton transport. The differential cross section (DCS) for elastic collisions of protons with neutral atoms is expressed as the product…

核理论 · 物理学 2020-06-24 Francesc Salvat , José Manuel Quesada

In the present paper, we study the uncertainties in modeling the collision of complex nuclei (heavy ions) resulting in capture of the nuclei into orbital motion. The effective interaction energy of the nuclei (effective potential) consists…

核理论 · 物理学 2023-05-02 I. I. Gontchar

The collision cross sections (CCS), momentum transfer cross sections (MTCS), or scattering cross sections (SCS) of an electron neutral pair are important components for computing the electric conductivity of a plasma gas. Larger collision…

等离子体物理 · 物理学 2023-10-18 Osama A. Marzouk

Centrality-dependent measurements of hadron and jet cross section attenuation in deep inelastic scattering on nuclei can shed new light on the physics of final-state interactions in the nuclear matter, including the path-length dependence…

高能物理 - 唯象学 · 物理学 2023-03-28 Hai Tao Li , Ze Long Liu , Ivan Vitev

Fully differential cross sections are calculated for the ionization of H$_2$ by fast charged projectiles using a semiclassical model developed previously for the ionization of atoms. The method is tested in case of 4 keV electron and 6 MeV…

原子物理 · 物理学 2009-12-07 F. Jarai-Szabo , K. Nagy-Pora , L Nagy

The collisions in four different reaction systems using $^{40,48}$Ca and $^{58,64}$Ni isotope beams and a Be target have been simulated using the Heavy Ion Phase Space Exploration and the Antisymmetrized Molecular Dynamics models. The…

核实验 · 物理学 2008-11-26 M. Mocko , M. B. Tsang , D. Lacroix , A. Ono , P. Danielewicz , W. G. Lynch , R. J. Charity

The impact of electron-capture (EC) cross sections on neutron-rich nuclei on the dynamics of core-collapse during infall and early post-bounce is studied performing spherically symmetric simulations in general relativity using a multigroup…

高能天体物理现象 · 物理学 2020-01-22 Aurélien Pascal , Simon Giraud , Anthea Fantina , Francesca Gulminelli , Jerome Novak , Micaela Oertel , Adriana Raduta

Continuing previous work, we have measured the projectile scattering-angle dependency for transfer excitation of fast protons (300-1200 keV/u) colliding with helium (p+He $\rightarrow$ H + He$^{+ *}$). Our high-resolution fully differential…

The independent atom and electron model [1] is introduced in a quantum context and associated approximations tentatively estimated. Confrontation of the model to measured ionization and excitation cross sections of small ionic carbon…

原子与分子团簇 · 物理学 2007-05-23 Ferid Mezdari , Karine Wohrer-Beroff , Marin Chabot

We apply a recently introduced model for an independent-atom-like calculation of ion-impact electron transfer and ionization cross sections to proton collisions from water, neon, and carbon clusters. The model is based on a geometrical…

原子与分子团簇 · 物理学 2018-12-20 Hans Jürgen Lüdde , Marko Horbatsch , Tom Kirchner

The purpose of this project is to investigate the use of charge couple devices (CCDs) to detect electrons directly. This can be done in transmission electron microscopy (TEM) for electrons over 100 KeV, but for space plasma instruments,…

仪器与探测器 · 物理学 2015-10-28 S. R. Mirfayzi

The differential cross sections for inclusive neutral pions as a function of transverse and longitudinal momentum in the very forward rapidity region have been measured at the Large Hadron Collider (LHC) with the Large Hadron Collider…

Fission fragment mass and angular distributions were measured from the ^{64}Ni+^{197}Au reaction at 418 MeV and 383 MeV incident energy. A detailed data analysis was performed, using the one-body dissipation theory implemented in the code…

核实验 · 物理学 2009-10-31 J. Velkovska , C. R. Morton , R. L. McGrath , P. Chung , I. Dioszegi

We show within the Color Glass Condensate framework that exclusive vector meson production at high energy is sensitive to the geometric deformation of the target nucleus at multiple length scales. Studying $e+$U collisions and varying the…

核理论 · 物理学 2023-08-16 Heikki Mäntysaari , Björn Schenke , Chun Shen , Wenbin Zhao

We test here the first stage of a route of modifications to be applied to the public GADGET2 code for dynamically identifying accretion centers during the collision process of two adjacent and identical gas cores. Each colliding core has a…

星系天体物理 · 物理学 2015-09-30 G. Arreaga-Garcia , J. Klapp

Two particle correlations are used to extract information about the characteristic size of the system for proton-proton collisions at 900 GeV measured by the ALICE (A Large Ion Collider experiment) detector at CERN. The correlation…

高能物理 - 实验 · 物理学 2011-02-18 Nicolas Bock

Heavy-ion collisions at center-of-mass nucleon collision energies 4.5--11.5 GeV are analyzed within the PHSD transport model. Spectator nucleons are separated, and the transfer of the initial angular momentum of colliding nuclei to the…

核理论 · 物理学 2023-05-19 N. S. Tsegelnik , E. E. Kolomeitsev , V. Voronyuk

Event classification by centrality is one of the key tasks of the MPD (Multi-Purpose Detector) experiment at the NICA collider. Centrality characterizes the initial geometry of heavy-ion collisions through the correlation of measured…

高能物理 - 实验 · 物理学 2026-05-26 D. Idrisov , F. Guber , N. Karpushkin , P. Parfenov