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Over the last decade, external seeded free electron lasers (FELs) have achieved significant advancements across various disciplines, progressively establishing themselves as indispensable tools in fields ranging from fundamental science to…

Accelerator Physics · Physics 2024-11-18 Li Zeng , Chao Feng , Xiaofan Wang , Huaiqian Yi , Weiqing Zhang

The temperature dependence of electron spin resonance (ESR) was studied in $EuFe_{2-x}Co_{x}As_2 $ (x = 0.0, 0.067, 0.1, 0.2, 0.25, 0.285, 0.35, 0.4 and 0.5). The ESR spectrum of all the samples indicates that the g factor and peak-to-peak…

Superconductivity · Physics 2009-08-04 J. J. Ying , T. Wu , Q. J. Zheng , Y. He , G. Wu , Q. J. Li , Y. J. Yan , Y. L. Xie , R. H. Liu , X. F. Wang , X. H. Chen

We conduct a series of measurements on the thermodynamic properties of an optically-trapped strongly interacting Fermi gas, including the energy $E$, entropy $S$, and sound velocity $c$. Our model-independent measurements of $E$ and $S$…

Other Condensed Matter · Physics 2009-11-13 Le Luo , John E. Thomas

The linewidth of a laser plays a pivotal role in ensuring the high fidelity of ion trap quantum processors and optical clocks. As quantum computing endeavors scale up in qubit number, the demand for higher laser power with ultra-narrow…

Quantum Physics · Physics 2024-05-14 Morteza Ahmadi , Tarun Dutta , Manas Mukherjee

The steep power-law dependence of element abundance enhancements on the mass-to-charge ratios [A/Q] of the ions in impulsive solar energetic-particle (SEP) events causes these enhancements to reflect the temperature-dependent pattern of Q…

Solar and Stellar Astrophysics · Physics 2015-10-05 Donald V. Reames , Edward W. Cliver , Stephen W. Kahler

High-gain Free Electron Laser (FEL) is one of the many electron-beam instabilities that have a number of common features linking the shot noise, the amplification and the saturation. In this paper, we present a new, model-independent…

Accelerator Physics · Physics 2015-05-19 Yichao Jing , Vladimir N. Litvinenko , Yue Hao , Gang Wang

Several past studies have described how absorption spectroscopy can be used to determine spatial temperature variations along the optical path by measuring the unique, nonlinear response to temperature of many molecular absorption…

Applied Physics · Physics 2021-08-18 Nathan Malarich , Greg Rieker

We present a systematic study of the temperature dependence of diffusive magnon spin transport, using a non-local device geometry. In our measurements, we detect spin signals arising from electrical and thermal magnon generation, and we…

Mesoscale and Nanoscale Physics · Physics 2016-11-09 Ludo J. Cornelissen , Bart J. van Wees

In this work, we have studied the effects from increasing the strength of the applied electric field on the charge transport of hydrogenated graphitic fibers. Resistivity measurements were carried out for direct currents in the nA - mA…

Materials Science · Physics 2020-05-19 Nadina Gheorghiu , Charles R. Ebbing , Timothy J. Haugan

We present a method for computing angle-resolved electron-energy-loss and gain spectroscopies for phonon and magnon excitations in transmission electron microscopy. Fractional scattering intensities are derived from the…

Materials Science · Physics 2025-01-30 José Ángel Castellanos-Reyes , Paul Zeiger , Ján Rusz

An electron beam has gained a maximum energy of 9 GeV per particle in a 1.3 m-long electron beam-driven plasma wakefield accelerator. The amount of charge accelerated in the spectral peak was 28.3 pC, and the root-mean-square energy spread…

From the radiation balance diagram illustrating the IPCC reports one can estimate the power received by Earth from the sun at Pin = 342 W/m2 and the power consumed, remitted and reflected by the earth and its atmosphere at Pout = 599 kW/m2.…

Atmospheric and Oceanic Physics · Physics 2008-11-04 Ahmed Boucenna

The temperature distribution of the emitting plasma is a crucial constraint when studying the heating of solar flare footpoints. However, determining this for impulsive phase footpoints has been difficult in the past due to insufficient…

Solar and Stellar Astrophysics · Physics 2015-06-15 D. R. Graham , I. G. Hannah , L. Fletcher , R. O. Milligan

Using low-photon energy angle-resolved photoemission (ARPES), we study the low-energy dispersion along the nodal (pi, pi) direction in Bi(2)Sr(2)CaCu(2)O(8+delta) (Bi2212) as a function of temperature. Less than 10 meV below the Fermi…

Superconductivity · Physics 2010-08-27 N. C. Plumb , T. J. Reber , J. D. Koralek , Z. Sun , J. F. Douglas , Y. Aiura , K. Oka , H. Eisaki , D. S. Dessau

An upper bound on the mixing efficiency is derived for a passive scalar under the influence of advection and diffusion with a body source. For a given stirring velocity field, the mixing efficiency is measured in terms of an equivalent…

Fluid Dynamics · Physics 2007-12-12 Jean-Luc Thiffeault , Charles R. Doering , John D. Gibbon

Tungsten surface enrichment of EUROFER steel by 250 eV deuterium sputtering is in-situ measured using low energy He$^{+}$ ion scattering spectroscopy. The samples are irradiated at various temperatures between 300 K and 800 K with a…

Materials Science · Physics 2019-10-18 H. R. Koslowski , S. R. Bhattacharyya , P. Hansen , Ch. Linsmeier , M. Rasiński , P. Ström

We show that antiferromagnetic susceptibility in ferritin increases with temperature between 4.2 K and 180 K (i. e. below the N\'{e}el temperature) when taken as the derivative of the magnetization at high fields ($30\times10^4$ Oe). This…

Strongly Correlated Electrons · Physics 2009-11-13 N. J. O. Silva , A. Millan , F. Palacio , E. Kampert , U. Zeitler , H. Rakoto , V. S. Amaral

The femtosecond optical pump-probe technique was used to study dynamics of photoexcited electrons and coherent optical phonons in transition metals Zn and Cd as a function of temperature and excitation level. The optical response in time…

Strongly Correlated Electrons · Physics 2009-11-11 Muneaki Hase , Kunie Ishioka , Jure Demsar , Kiminori Ushida , Masahiro Kitajima

In this study, variations with respect to temperature of the increments of enthalpy and Gibbs energy, arising in the dissolution of proteins in water, have been investigated by the methods of statistical thermodynamics. In this formalism,…

Statistical Mechanics · Physics 2007-05-23 G. Oylumluoglu , F. Buyukkilic , D. Demirhan

Thermoelectric power, electrical conductivity, and high field Hall effect were studied over a broad temperature range in ferromagnetic Ga(1-x)Mn(x)As epitaxial layers (0.015<x<0.06). Thermoelectric power analysis gives the information about…