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The collective Raman cooling of a trapped two-component Fermi gas is analyzed. We develop the quantum master equation that describes the collisions and the laser cooling, in the festina lente regime, where the heating due to photon…

Condensed Matter · Physics 2009-11-07 Z. Idziaszek , L. Santos , M. Baranov , M. Lewenstein

The specific heat is a central property of condensed matter systems including polymers and oligomers in their condensed phases. Yet, predictions of this quantity from molecular simulations and successful comparisons to experimental data are…

Soft Condensed Matter · Physics 2021-06-30 Hongyu Gao , Tobias P. W. Menzel , Martin H. Mueser , Debashish Mukherji

We present 3D Particle-in-Cell (PIC) modeling of an ultra-intense laser experiment by the Extreme Light group at the Air Force Research Laboratory (AFRL) using the PIC code LSP. This is the first time PIC simulations have been performed in…

Using a kilojoule class laser, we demonstrate for the first time that high-contrast picosecond pulses are advantageous for ion acceleration. We show that a laser pulse with optimum duration and a large focal spot accelerates electrons…

Intense, pulsed ion beams locally heat materials and deliver dense electronic excitations that can induce materials modifications and phase transitions. Materials properties can potentially be stabilized by rapid quenching. Pulsed ion beams…

Applied Physics · Physics 2017-05-30 John J. Barnard , Thomas Schenkel

Interconnect is one of the main performance determinant of modern integrated circuits (ICs). The new technology of vertical ICs places circuit blocks in the vertical dimension in addition to the conventional horizontal plane. Compared to…

Materials Science · Physics 2013-05-15 Abderrazzak El Boukili

The cores of main sequence intermediate- and high-mass stars are convective. Mixing at the radiative-convective boundary, waves excited by the convection, and magnetic fields generated by convective dynamos all influence the main sequence…

Solar and Stellar Astrophysics · Physics 2023-08-02 Daniel Lecoanet , Philipp V. F. Edelmann

We analyze high cadence high resolution observations of a C3.2 flare obtained by AIA/SDO on August 1, 2010. The flare is a long duration event with soft X-ray and EUV radiation lasting for over four hours. Analysis suggests that magnetic…

Solar and Stellar Astrophysics · Physics 2015-06-03 Jiong Qiu , Wen-Juan Liu , Dana W. Longcope

A new, efficient, algorithmic approach to create illumination configurations for laser driven high energy density physics experiments is proposed. The method is applied to a polar direct drive solid target experiment at the National…

For the successful generation of ion-beam-driven high energy density matter and heavy ion fusion energy, intense ion beams must be transported and focused onto a target with small spot size. One of the successful approaches to achieve this…

Escape of $\alpha$-particles from a burning or an ignited burning deuterium-tritium (DT) fuel with temperature up to more than tens keV is very important in inertial confinement fusion, which can significantly influence not only the hot…

Plasma Physics · Physics 2020-01-08 Kai Li , Ke Lan

The design space for inertial confinement fusion (ICF) experiments is vast and experiments are extremely expensive. Researchers rely heavily on computer simulations to explore the design space in search of high-performing implosions.…

Machine Learning · Computer Science 2021-05-19 K. D. Humbird , J. L. Peterson , J. Salmonson , B. K. Spears

Despite the three-dimensional nature of core-collapse supernovae (CCSNe), simulations in spherical symmetry (1D) play an important role to study large model sets for the progenitor-remnant connection, explosion properties, remnant masses,…

High Energy Astrophysical Phenomena · Physics 2025-05-27 Liliya Imasheva , H. -Thomas Janka , Achim Weiss

Mixing, ignition and combustion behavior in a rapid compression and expansion machine operated under Premixed Charge Compression Ignition (PCCI) relevant conditions are investigated by combined passive optical and laser-optical high-speed…

Fluid Dynamics · Physics 2021-03-15 Ulrich Doll , Christophe Barro , Michele Todino , Konstantinos Boulouchos

We introduce a scheme to perform dissipation-assisted quantum information processing in ion traps considering realistic decoherence rates, for example, due to motional heating. By means of continuous sympathetic cooling, we overcome the…

Quantum Physics · Physics 2013-03-21 A. Bermudez , T. Schaetz , M. B. Plenio

Starting from the beginning of their research in the early 2000's, the ultracold plasmas were considered as a promising tool to achieve considerable values of the Coulomb coupling parameter for electrons. Unfortunately, this was found to be…

Plasma Physics · Physics 2023-12-29 Yurii V. Dumin , Anastasiia T. Lukashenko

Recent high-resolution cosmological hydrodynamic simulations run with a variety of codes systematically predict large amounts of entropy in the intra-cluster medium at low redshift, leading to flat entropy profiles and a suppressed…

Cosmology and Nongalactic Astrophysics · Physics 2023-02-10 Edoardo Altamura , Scott T. Kay , Richard G. Bower , Matthieu Schaller , Yannick M. Bahé , Joop Schaye , Josh Borrow , Imogen Towler

Core-collapse supernova explosions are driven by a central engine that converts a small fraction of the gravitational binding energy released during core collapse to outgoing kinetic energy. The suspected mode for this energy conversion is…

High Energy Astrophysical Phenomena · Physics 2017-12-25 Evan O'Connor , C. J. Horowitz , Zidu Lin , Sean Couch

Two different types of experiments were performed. In the first experiment, we studied the low-temperature condensation of vaporized graphite inside bulk liquid helium, while in the second experiment, we studied the condensation of single…

Atomic and Molecular Clusters · Physics 2018-05-07 S. A. Krasnokutski , M. Goulart , E. B. Gordon , A. Ritsch , C. Jäger , M. Rastogi , W. Salvenmoser , Th. Henning , P. Scheier

The role of flux-limited thermal conduction on the fusion performance of the uniaxially-driven targets studied by Derentowicz et al.; Jour. Tech. Phys. 18, 465 (1977) and Jour. Tech. Phys. 25, 135 (1977), is explored as part of a wider…

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