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Our Galaxy is the largest nuclear interaction experiment which we know, because of the interaction between cosmic ray particles and the interstellar material. Cosmic rays are particles, which have been accelerated in the Galaxy or in…

Astrophysics · Physics 2011-04-15 Peter L. Biermann

This contribution is a brief introduction to nonthermal effects related to modifications of the interatomic potential upon ultrafast excitation of the electronic system of solids, primarily focusing on the swift heavy ion track problem. We…

Materials Science · Physics 2023-12-29 N. Medvedev , R. Voronkov , A. E. Volkov

The physical mechanism of nuclear reactions at low energies caused by spatial extension of electron is considered. Nuclear reactions of this type represent intra-electronic processes, more precisely, the processes occurring inside the area…

General Physics · Physics 2007-05-23 V. P. Oleinik , Yu. D Arepjev

We have investigated temporal and spectral properties of a large sample of thermonuclear bursts with oscillations from eight different sources with spin frequencies varying from 270 to 620 Hz. For our sample we chose those bursts, for which…

High Energy Astrophysical Phenomena · Physics 2017-12-27 Manoneeta Chakraborty , Yunus Emre Bahar , Ersin Göğüş

We have spent 50 years in heated discussion over which populations of solar energetic particles (SEPs) are accelerated at flares and which by shock waves driven out from the Sun by coronal mass ejections (CMEs). The association of the large…

Solar and Stellar Astrophysics · Physics 2017-09-19 Donald V. Reames

We present systematic investigations on the shock responses of nanoporous aluminum (np-Al) by nonequilibrium molecular dynamics simulations. The dislocation nucleation sites are found to concentrate in low latitude region near the equator…

Computational Physics · Physics 2016-10-14 Meizhen Xiang , Junzhi Cui , Yantao Yang , Yi Liao , Kun Wang , Yun Chen , Jun Chen

Under sufficiently high electric field gradients, electron behaviour within exactly perpendicular shocks is unstable to the so-called trajectory instability. We extend previous work paying special attention to shortiscale, high amplitude…

Solar and Stellar Astrophysics · Physics 2013-04-18 V. See , R. F. Cameron , S. J. Schwartz

For decades, the detection of phosphorus-bearing molecules in the interstellar medium was restricted to high-mass star-forming regions (as e.g. SgrB2 and Orion KL) and the circumstellar envelopes of evolved stars. However, recent…

Astrophysics of Galaxies · Physics 2018-08-08 Izaskun Jimenez-Serra , Serena Viti , David Quenard , Jonathan Holdship

Direct modeling of porous materials under shock is a complex issue. We investigate such a system via the newly developed material-point method. The effects of shock strength and porosity size are the main concerns. For the same porosity,…

Materials Science · Physics 2015-05-13 Aiguo Xu , Guangcai Zhang , X. F. Pan , Jianshi Zhu

Nuclear quantum effects (NQE) tend to generate delocalized molecular dynamics due to the inclusion of the zero point energy and its coupling with the anharmonicities in interatomic interactions. Here, we present evidence that NQE often…

Photoionization by high-energy photons creates nonthermal electrons with a broad range of energies that heat and chemically transform the atmospheres of planets. The specifics of the interactions are notably different when the gas is atomic…

Earth and Planetary Astrophysics · Physics 2025-06-17 Antonio García Muñoz , Ewan Bataille

A fast ion penetrating a solid creates a track of excitations. This can produce displacements seen as an etched track, a process initially used to detect energetic particles but now used to alter materials. From the seminal papers by…

Materials Science · Physics 2009-11-07 E. M. Bringa , R. E. Johnson

We investigate the evolution of intracluster medium during a cluster merger, explicitly considering the relaxation process between the ions and electrons by N-body and hydrodynamical simulations. When two subclusters collide each other, a…

Astrophysics · Physics 2009-10-31 Motokazu Takizawa

Starting from a Huxley-type model for an agitated vibrational mode, we propose an embedding of standard active particle models in terms of two-temperature processes. One temperature refers to an ambient thermal bath, and the other…

Statistical Mechanics · Physics 2024-07-02 Faezeh Khodabandehlou , Christian Maes

The system made by a charged particle interacting with a single electrostatic wave which propagates perpendicularly to the magnetic field, at a frequency larger than the cyclotron one, has been extensively studied in literature due to its…

Plasma Physics · Physics 2025-12-23 F. Sattin. L. Martinelli

In order to study the heating process of water by the microwaves of 2.5-20GHz frequencies, we have performed molecular dynamics simulations by adopting a non-polarized water model that have fixed point charges on rigid-body molecules. All…

Materials Science · Physics 2009-11-11 Motohiko Tanaka , Motoyasu Sato

Energy correlators characterize the asymptotic energy flow in scattering events produced at colliders, from which the microscopic physics of the scattering can be deduced. This view of collisions is akin to analyses of the Cosmic Microwave…

High Energy Physics - Phenomenology · Physics 2025-01-23 Ankita Budhraja , Wouter J. Waalewijn

Structural glasses formed by quenching a melt possess a population of soft quasilocalized excitations --- often called `soft spots' --- that are believed to play a key role in various thermodynamic, transport and mechanical phenomena. Under…

Soft Condensed Matter · Physics 2020-04-08 Geert Kapteijns , David Richard , Edan Lerner

Questions regarding energy dissipation in astrophysical jets are open to date, despite of numerous attempts to limit the diversity of models. Some of the most popular models assume that energy is transferred to particles via internal…

High Energy Astrophysical Phenomena · Physics 2023-04-24 Patryk Pjanka , Camilia Demidem , Alexandra Veledina

The pattern of radiation energy deposition in substances at the microscopic level of lattice, molecule size, or the cell's nucleus is not uniform. The energy of radiation is transferred to the substance medium in the form of discrete,…

Medical Physics · Physics 2022-10-14 Elsayed K. Elmaghraby , Mohamed Bahaaeldin-Afifi