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I examine recent fittings of luminous supernovae (LSNe) with extra energy sources of magnetar and helium burning and find that in about half of these LSNe the fitting parameters have some problems. In some LSNe the total energy of these two…

高能天体物理现象 · 物理学 2022-08-31 Noam Soker

In this paper, we demonstrate external control over the magnetization direction in ferromagnetic (FM) In_{1-x}Mn_{x}As/GaSb heterostructures. FM ordering with T_C as high as 50 K is confirmed by SQUID magnetization, anomalous Hall effect…

We examine four candidate mechanisms that could explain the high surface temperatures of magnetars. (1) Heat flux from the liquid core heated by ambipolar diffusion. It could sustain the observed surface luminosity $L_s\approx 10^{35}$…

高能天体物理现象 · 物理学 2016-12-28 Andrei M. Beloborodov , Xinyu Li

In this paper I introduce a precise constraint on primordial magnetogenesis, for a generic class of single-field inflationary model followed by small field excursion below the Planck scale. I also establish a connection between the magnetic…

高能物理 - 理论 · 物理学 2014-06-24 Sayantan Choudhury

We use inelastic neutron scattering to measure the magnetic excitations in the underdoped superconductor La2-xSrxCuO4 (x=0.085, Tc=22 K) over energy and temperatures ranges 5 < E < 200 meV and 5 < T < 300 K respectively. At high temperature…

超导电性 · 物理学 2009-04-23 O. J. Lipscombe , B. Vignolle , T. G. Perring , C. D. Frost , S. M. Hayden

Spectral studies of quiescent emission and bursts of magnetar candidates using XMM-Newton, Chandra and Swift data are presented. Spectra of both the quiescent emission and the bursts for most magnetar candidates are reproduced by a…

天体物理学 · 物理学 2015-05-13 Yujin E. Nakagawa , Atsumasa Yoshida , Kazutaka Yamaoka , Noriaki Shibazaki

Liquid Xenon (LXe) is an excellent material for experiments designed to detect dark matter in the form of Weakly Interacting Massive Particles (WIMPs). A low energy detection threshold is essential for a sensitive WIMP search. The…

仪器与探测器 · 物理学 2010-04-06 A. Manzur , A. Curioni , L. Kastens , D. N. McKinsey , K. Ni , T. Wongjirad

It is well known that Brunel's vacuum heating mechanism is operative for laser energy absorption when the target plasma density rises sharply. For non-relativistic laser intensities and planar targets it is also necessary that the laser…

等离子体物理 · 物理学 2017-10-25 Chandrasekhar Shukla , Amita Das

This note aims at understanding the maximum allowable temperature at the hot spot during a quench in Nb3Sn accelerator magnets, through the analysis of experimental results previously presented.

加速器物理 · 物理学 2014-01-17 G. Ambrosio

In line with the studies presented in the parts I and II of this paper, the structure of a laminar rich premixed methane flame doped with cyclopentene has been investigated. The gases of this flame contains 15.3% (molar) of methane, 26.7%…

In the present work, accurate determination of single-particle ignition is focused on using high-speed optical diagnostics combined with machine learning approaches. Ignition of individual particles in a laminar flow reactor are visualized…

机器学习 · 计算机科学 2024-12-06 Tao Li , Zhangke Liang , Andreas Dreizler , Benjamin Böhm

Many models of gamma-ray bursts suggest a common central engine: a black hole of several solar masses accreting matter from a disk at an accretion rate from 0.01 to 10 M_\sun / s. The inner region of the disk is cooled by neutrino emission…

天体物理学 · 物理学 2009-11-13 Yi Xie , Chang-Yin Huang , Wei-Hua Lei

Engineering features are known to cause jets of ablator material to enter the fuel hot-spot in inertial confinement fusion implosions. The Biermann battery mechanism wraps them in self-generated magnetic field. We show that higher-Z jets…

等离子体物理 · 物理学 2020-08-26 James D. Sadler , Hui Li , Brian M. Haines

We propose a laser-driven near-solid density nano-structured micro-reactor concept operating with mixed nuclear fusion fuels. The micro-reactor is capable of making use of a range of neutronic and aneutronic fuels. Its core parts consists…

等离子体物理 · 物理学 2022-04-26 Hartmut Ruhl , Georg Korn

Projectile like fragments emerging from heavy ion collision have an excitation energy which is often labeled by a temperature. This temperature was recently calculated using a geometric model. We expand the geometric model to include also…

核理论 · 物理学 2015-06-17 S. Mallik , S. Das Gupta , G. Chaudhuri

The magnetic moment and magnetization in GaAs/Ga$_{0.84}$In$_{0.16}$As/GaAs heterostructures with Mn deluted in GaAs cover layers and with atomically controlled Mn $\delta$-layer thicknesses near GaInAs-quantum well ($\sim$3 nm) in…

Application of an external kilo-tesla-level magnetic field, which can be generated using high-intensity laser, to a target is a promising scheme to reduce spray angle of a laser-driven relativistic electron beam (REB) for enhancing the…

等离子体物理 · 物理学 2025-06-10 Hiroki Morita , Atsushi Sunahara , Yasunobu Arikawa , Hiroshi Azechi , Shinsuke Fujioka

The quantum tunneling of the magnetization vector between excited levels are studied theoretically in single-domain ferromagnetic nanoparticles with biaxial crystal symmetry placed in an external magnetic field at an arbitarily directed…

介观与纳米尺度物理 · 物理学 2009-10-31 Rong Lu , Su-Peng Kou , Jia-Lin Zhu , Lee Chang , Bing-Lin Gu

This paper presents a new chemical kinetic model developed for the simulation of auto-ignition and combustion of engine surrogate fuel mixtures sensitized by the presence of NOx. The chemical mechanism is based on the PRF auto-ignition…

化学物理 · 物理学 2009-03-26 Jörg Anderlohr , A. Pires Da Cruz , Roda Bounaceur , Frédérique Battin-Leclerc

The linear motor driving the target for the Muon Ionisation Cooling Experiment has been redesigned to improve its reliability and performance. A new coil-winding technique is described which produces better magnetic alignment and improves…