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The pressure dependence, up to 11.3 kbar, of basic parameters of the superconducting state, such as the critical temperature (Tc), the lower and the upper critical fields, the coherence length, the penetration depth, and their anisotropy,…

Superconductivity · Physics 2016-11-11 J Pietosa , D J Gawryluk , R Puzniak , A Wisniewski , J Fink-Finowicki , M Kozlowski , M Berkowski

A solar flare releases magnetic energy by reconnecting field lines across a current sheet, thereby allowing their relaxation to a lower energy state. The maximum possible energy is released if all field lines relax to a current-free…

Solar and Stellar Astrophysics · Physics 2025-11-03 Drake Osaben , Jiong Qiu , Dana W. Longcope

Nearly continuous, densely sampled, space-based photometry allows us to recover the finest details in the light variations of stars. The number of such light curves have been increasing rapidly in the last few years thanks to the extended…

Solar and Stellar Astrophysics · Physics 2023-12-18 E. Plachy

Electron sheaths are commonly found near Langmuir probes collecting the electron saturation current. The common assumption is that the probe collects the random flux of electrons incident on the sheath, which tacitly implies that there is…

The solenoid scan is a widely used method for the in-situ measurement of the thermal emittance in a photocathode gun. The popularity of this method is due to its simplicity and convenience since all rf photocathode guns are equipped with an…

A Temperature mapping (T-map) system for Superconducting Radio Frequency (SRF) cavities consists of a thermometer array positioned precisely on an exterior cavity wall, capable of detecting small increases in temperature; therefore it is a…

Accelerator Physics · Physics 2015-08-11 M. Ge , G. Hoffstaetter , F. Furuta , E. Smith , M. Liepe , S. Posen , H. Padamsee , D. Hartill , X. Mi

In this work, a recent theoretically predicted phenomenon of enhanced permittivity with electromagnetic waves using lossy materials is investigated for t he analogous case of mass density and acoustic waves, which represents inertial…

Materials Science · Physics 2014-09-19 Matthew D. Guild , Victor M. Garcia-Chocano , Weiwei Kan , Jose Sanchez-Dehesa

We propose a new mechanism to explain the radio Arc and threads in the Galactic Center by current sheets produced by local magnetic shears due to interaction of a moving cloud and the vertical field based on three-dimensional…

Astrophysics · Physics 2015-06-24 Yoshiaki Sofue , Hiromitsu Kigure , Kazunari Shibata

We present new observations of the transiting system TrES-3 obtained from 2009 to 2011 at several observatories. The orbital parameters of the system were re- determined and a new linear ephemeris was calculated. The best quality light…

Solar and Stellar Astrophysics · Physics 2015-06-15 M. Vanko , G. Maciejewski , M. Jakubik , T. Krejcova , J. Budaj , T. Pribulla , J. Ohlert , St. Raetz , S. Parimucha , L. Bukowiecki

Radio detection of air showers in the current era has progressed immensely to effectively extract the properties of these air showers. Primary cosmic rays with energies of hundreds of PeV have been successfully measured with the method of…

Instrumentation and Methods for Astrophysics · Physics 2019-10-23 Aswathi Balagopal V. , Andreas Haungs , Thomas Huber , Tim Huege , Matthias Kleifges , Max Renschler , Harald Schieler , Frank G. Schröder , Andreas Weindl

Understanding the thermal behaviour of superconducting accelerator magnets is essential to ensure their stable and reliable operation. This work presents an extension of the Finite Element Quench Simulator (FiQuS) Multipole module to…

Consideration is being given to upgrading the SuperKEKB e$^+$e$^-$ collider with polarized electron beams, which would open a new program of precision electroweak physics at a centre-of-mass energy of 10.58GeV, the mass of the…

High Energy Physics - Experiment · Physics 2019-07-10 J. Michael Roney

In the past decade, detection of THz radiation by plasma-wave-assisted frequency mixing in antenna-coupled field-effect transistors (TeraFETs) -- implemented in various semiconductor material systems (Si CMOS, GaN/AlGaN, GaAs/AlGaAs,…

Computational Physics · Physics 2025-03-05 Florian Ludwig , Hartmut G. Roskos , Raul Borsche

The Square Kilometer Array will have the sensitivity, spatial resolution, and frequency resolution to provide new scientific knowledge of evolved stars. Four basic areas of scientific exploration are enhanced by the construction of the SKA:…

Astrophysics · Physics 2009-11-10 Kevin Marvel

We investigate theoretically the ultimate resolution that can be achieved with passive remote sensing in the microwave regime used e.g.~on board of satellites observing Earth, such as the Soil Moisture and Ocean Salinity (SMOS) mission. We…

Quantum Physics · Physics 2022-07-20 Emre Köse , Gerardo Adesso , Daniel Braun

We extend a theorem of Bloch, which concerns the net orbital current carried by an interacting electron system in equilibrium, to include mesoscopic effects. We obtain a rigorous upper bound to the allowed ground-state current in a ring or…

Condensed Matter · Physics 2009-10-28 Michael R. Geller

Electron current layers, which form in various natural and laboratory plasmas, are susceptible to multiple instabilities, with tearing being a prominent instability driven by current gradients. Tearing is considered a potential mechanism…

Plasma Physics · Physics 2025-01-27 Sushmita Mishra , Gurudatt Gaur , Bhavesh G. Patel

As superconductors are thinned down to the 2D limit, their critical temperature $T_c$ typically decreases. Here we report the opposite behavior, a substantial enhancement of $T_c$ with decreasing thickness, in 2D crystalline superconductor…

The Planar Model of the Electrode-Vacuum-Electrode configuration for STM in which electrode surfaces are assumed to be infinite parallel planes, with atomic size separation and vacuum between them, is used to calculate tunneling current…

Other Condensed Matter · Physics 2023-01-04 Malati Dessai , Arun V. Kulkarni

Spatial confinement of electronic topological surface states (TSS) in topological insulators poses a formidable challenge because TSS are protected by time-reversal symmetry. In previous works formation of a gap in the electronic spectrum…