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Related papers: Collision Cascade-Driven Evolution of Vacancy Defe…

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We study the effects of rotation on the dynamics, energetics and Ni-56 production of Pair Instability Supernova explosions by performing rotating two-dimensional ("2.5-D") hydrodynamics simulations. We calculate the evolution of eight low…

High Energy Astrophysical Phenomena · Physics 2015-06-17 E. Chatzopoulos , J. C. Wheeler , S. M. Couch

Turbulence plays a key role for forming the complex geometry of the large-scale current sheet (CS) and fast energy release in a solar eruption. In this paper, we present full 3D high-resolution simulations for the process of a moderate…

Solar and Stellar Astrophysics · Physics 2023-08-21 Jing Ye , John C. Raymond , Zhixing Mei , Qiangwei Cai , Yuhao Chen , Yan Li , Jun Lin

Collisionless dissipation of macroscopic energy into heat is an unsolved problem of space and astrophysical plasmas, e.g., solar wind and Earth's magnetosheath. The most viable process under consideration is the turbulent-cascade of…

Plasma Physics · Physics 2021-10-04 Neeraj Jain , Jörg Büchner , Horia Comişel , Uwe Motschmann

The excellent mechanical properties of the Ni-based superalloy IN718 mainly result from coherent $\gamma''$ precipitates. Due to a strongly anisotropic lattice misfit between the matrix and the precipitate phase, the particles exhibit…

Materials Science · Physics 2020-02-26 Felix Schleifer , Markus Holzinger , Yueh-Yu Lin , Uwe Glatzel , Michael Fleck

The details of the physical mechanism that drives core-collapse supernovae (CCSNe) remain uncertain. While there is an emerging consensus on the qualitative outcome of detailed CCSN mechanism simulations in 2D, only recently have…

High Energy Astrophysical Phenomena · Physics 2018-10-10 Evan O'Connor , Sean Couch

We theoretically investigate the dynamics and stability of a temporal cavity soliton (CS) excited inside a silicon-based microresonator that exhibits free-carrier generation as a result of two-photon absorption (TPA). The optical…

Optics · Physics 2019-11-13 Ambaresh Sahoo , Samudra Roy

Use of amorphous silicon ($a$-Si) and hydrogenated amorphous silicon ($a$-Si:H) in photovoltaics has been limited by light-induced degradation (the Staebler-Wronski effect) and low hole mobilities, and voids have been implicated in both…

Materials Science · Physics 2020-02-19 Enrique Guerrero , David A. Strubbe

In the mean field limit, isolated gravitational systems often evolve towards a steady state through a violent relaxation phase. One question is to understand the nature of this relaxation phase, in particular the role of radial…

Astrophysics of Galaxies · Physics 2018-12-19 Anaelle Halle , Stephane Colombi , Sebastien Peirani

We review the current literature on the formation of Coherent Structures (CoSs) in strongly turbulent 3D magnetized plasmas. CoSs (Current Sheets (CS), magnetic filaments, large amplitude magnetic disturbances, vortices, and shocklets)…

High Energy Astrophysical Phenomena · Physics 2023-05-03 Loukas Vlahos , Heinz Isliker

Nonequilibrium states of quantum materials can exhibit exotic properties and enable unprecedented functionality and applications. These transient states are inherently inhomogeneous, characterized by the formation of topologically protected…

High entropy alloys (HEAs) have captured much attention in recent years due to their conceivably improved radiation resistance compared to pure metals and traditional alloys. However, among HEAs, there are millions of design possibilities…

Astrophysical explosions that contain dense and ram-pressure-dominated ejecta evolve through an interaction phase, during which a forward shock (FS), contact discontinuity (CD), and reverse shock (RS) form and expand with time. We describe…

High Energy Astrophysical Phenomena · Physics 2024-10-17 Eric R. Coughlin

Dynamics of central collisions of heavy nuclei in the energy range from few tens of MeV/nucleon to a couple of GeV/nucleon is discussed. As the beam energy increases and/or the impact parameter decreases, the maximum compression increases.…

Nuclear Theory · Physics 2009-09-25 P. Danielewicz

Single atom catalysts (SACs) present the ultimate level of catalyst utilization, which puts them in the focus of current research. For this reason, their understanding is crucial for the development of new efficient catalytic systems. Using…

Materials Science · Physics 2021-01-11 Aleksandar Z. Jovanović , Slavko V. Mentus , Natalia V. Skorodumova , Igor A. Pašti

The discovery of superconductivity under high pressure with $T_c$ exceeding 80 K in a bilayer nickelate La$_3$Ni$_2$O$_7$ has led to a strong desire to realize similar high $T_c$ phenomena at ambient pressure. As one possible path toward…

Superconductivity · Physics 2025-02-20 Masayuki Ochi , Hirofumi Sakakibara , Hidetomo Usui , Kazuhiko Kuroki

Collapse modes in compressed simple cubic (SC) and body-centered cubic (BCC) periodic arrangements of elastic frictionless beads were studied numerically using the discrete element method. Under pure hydrostatic compression, the SC…

Soft Condensed Matter · Physics 2020-09-23 Igor A. Ostanin , Artem R. Oganov , Vanessa Magnanimo

Observations of type Ia supernovae include information about the characteristic nucleosynthesis associated with these thermonuclear explosions. We consider observational constraints from iron-group elemental and isotopic ratios, to compare…

We present 3D hydrodynamic simulations of neutrino-driven supernovae (SNe) with the PROMETHEUS-HOTB code, evolving the asymmetrically expanding ejecta from shock breakout until they reach the homologous expansion phase after roughly one…

Solar and Stellar Astrophysics · Physics 2021-01-20 Michael Gabler , Annop Wongwathanarat , Hans-Thomas Janka

This work presents a multiscale and multiphysics framework to investigate the radiation-induced damage in nano-crystalline materials. The framework combines two methodologies, including molecular dynamics simulations with electronic effects…

Mesoscale and Nanoscale Physics · Physics 2023-03-22 Mohamed Hendy , Mauricio Ponga

The crystallization of amorphous solids under ultrafast laser irradiation represents a paradigm of non-equilibrium phase transitions, where the interplay between electromagnetic energy localization and atomic-scale dynamics remains largely…

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