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The radiative acceleration of particles and the electrostatic potential fields that arise in low density plasmas hit by radiation produced by a transient, compact source are investigated. We calculate the dynamical evolution and asymptotic…

Astrophysics · Physics 2009-11-07 L. Zampieri , R. Turolla , L. Foschini , A. Treves

It is shown that the two-flavor neutrino oscillation equations admit an exact analytic solution for arbitrarily chosen normalized electron neutrino population, provided the electron plasma density is adjusted in a certain way. The…

Plasma Physics · Physics 2014-01-14 Fernando Haas , José Tito Mendonça

For the model Hamiltonian describing the electron-nuclear dynamics of a quantum dot, we obtained an exact expression for the limiting nuclear polarization as a function of the number of groups of equivalent nuclei. It is shown that the…

Mesoscale and Nanoscale Physics · Physics 2008-01-10 G. G. Kozlov

The properties of nuclei embedded in an electron gas are studied within the relativistic mean-field approach. These studies are relevant for nuclear properties in astrophysical environments such as neutron-star crusts and supernova…

Nuclear Theory · Physics 2008-11-26 Thomas J. Buervenich , Igor N. Mishustin , Walter Greiner

Methods for reconstructing the spectral density of a vibrational environment from experimental data can yield key insights into the impact of the environment on molecular function. Although such experimental methods exist, they generally…

Chemical Physics · Physics 2025-09-11 Roosmarijn de Wit , Jonathan Keeling , Brendon W. Lovett , Alex W. Chin

Observations of synchrotron radiation across a wide range of wavelengths provide clear evidence that electrons are accelerated to relativistic energies in supernova remnants (SNRs). However, a viable mechanism for the pre-acceleration of…

Astrophysics · Physics 2007-05-23 M. E. Dieckmann , K. G. McClements , S. C. Chapman , R. O. Dendy , L. O'C. Drury

Modeling of dynamic processes in nuclear reactors is carried out, mainly, on the basis of the multigroup diffusion approximation for the neutron flux. The basic model includes a multidimensional set of coupled parabolic equations and…

Computational Engineering, Finance, and Science · Computer Science 2017-06-19 Alexander V. Avvakumov , Valery F. Strizhov , Petr N. Vabishchevich , Alexander O. Vasilev

For the first time a method is devised for non-iterative modeling of motion of a radiating, electrified pointlike mass that has an internal structure. New, supplementary kinetic constants of accelerated charged particles are defined, that…

General Physics · Physics 2010-05-24 Marijan Ribarič , Luka Šušteršič

Nuclear collisions can compress nuclear matter to densities achieved within neutron stars and within core-collapse supernovae. These dense states of matter exist momentarily before expanding. We analyzed the flow of matter to extract…

Nuclear Theory · Physics 2009-11-07 P. Danielewicz , R. Lacey , W. G. Lynch

We study the production of electron density waves by neutrinos propagating through a plasma. We treat this process in field theoretically as a Cerenkov emission of phonons (quanta of electron density waves) by neutrinos. We compute the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Subhendra Mohanty , Sarira Sahu , Srubabati Goswami

Nuclear reactors are one of the most intense, pure, controllable, cost-effective, and well-understood sources of neutrinos. Reactors have played a major role in the study of neutrino oscillations, a phenomenon that indicates that neutrinos…

High Energy Physics - Experiment · Physics 2015-04-30 Petr Vogel , Liangjian Wen , Chao Zhang

We investigate theoretically electron transfer in a doble dot in a situation where it is governed by nuclear magnetic field: This has been recently achieved in experiment. We show how to partially compensate the nuclear magnetic field to…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Oleg N. Jouravlev , Yuli V. Nazarov

Based on the Thomas-Fermi approach, we describe and distinguish the electron distributions around extended nuclear cores: (i) in the case that cores are neutral for electrons bound by protons inside cores and proton and electron numbers are…

Astrophysics · Physics 2016-11-15 M. Rotondo , R. Ruffini , S. -S. Xue

We revisit the exact microscopic equations (in differential, and equivalent integral form) ruling a relativistic cold plasma after the plane-wave Ansatz, without customary approximations. We show that in the Eulerian description the motion…

Mathematical Physics · Physics 2016-07-14 Gaetano Fiore

A techniques, describing electron dynamics for magnetic models closed to cyclical accelerators, is developed and applied to the analysis of electromagnetic radiation emitted by charged particles. Formulas for the angular characteristics of…

Accelerator Physics · Physics 2018-11-27 Oleg Shishanin

In this review we motivate ultrahigh energy neutrino searches and their connection to ultrahigh energy cosmic rays. We give an overview of neutrino production mechanisms and their potential sources. Several model-independent benchmarks of…

High Energy Astrophysical Phenomena · Physics 2025-02-18 Marco Stein Muzio

We consider a model of neutron-nuclear wave burning. The wave of nuclear burning of the medium is initiated by an external neutron source and is the basis for the new generation reactors -- the so-called "traveling-wave reactors". We…

Nuclear Theory · Physics 2020-12-23 V. V. Urbanevich , I. V. Sharph , V. A. Tarasov , V. D. Rusov

In nuclear-spin-polarization-induced quantum dots the electrons are confined through local nuclear spin polarization. The model electron confinement potential is time-dependent due to the nuclear spin diffusion and relaxation processes. It…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 B. F. Samsonov , Yu. V. Pershin

We present in this paper an original approach to compute the electrophoretic mobility of rigid nucleo-protein complexes like nucleosomes. This model allows to address theoretically the influence of complex position along DNA, as well as…

Biological Physics · Physics 2016-08-14 Martin Castelnovo , Sébastian Grauwin

Intense few-to-sub-femtosecond soft x-ray pulses can produce neutral, two-site excited double-core-hole states by promoting two core electrons to the same unoccupied molecular orbital. We theoretically investigate double nitrogen K-edge…

Chemical Physics · Physics 2023-06-28 Adam E. A. Fouda , Dimitris Koulentianos , Linda Young , Gilles Doumy , Phay J. Ho