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Identifying materials hosting an excitonic insulator ground state has been one of the major pursuits in condensed matter physics in recent years. Promising candidates in transition metal chalcogenide compounds (TMC), including…

Strongly Correlated Electrons · Physics 2026-03-20 Yao Zeng , Shi-Cong Mo , Wéi Wú

Divertor strike point splitting induced by resonant magnetic perturbations (RMPs) has been observed on MAST for a variety of RMP configurations in a plasma scenario with Ip=750kA where those configurations all have similar resonant…

Plasma Physics · Physics 2016-01-13 P. Cahyna , M. Peterka , A. Kirk , A. Thornton , J. Harrison , D. Muir , R. Panek , the MAST team

This study presents the first ion temperature (\(T_i\)) measurements from the MAST-U divertor using a Retarding Field Energy Analyzer (RFEA). Embedded within the flat tile of the closed divertor chamber, the RFEA captures \(T_i\) profiles…

Plasma Physics · Physics 2024-10-15 Y. Damizia , S. Elmore , P. Ryan , S. Allan , F. Federici , N. Osborne , J. W. Bradley , the MAST-U Team

Transition-edge sensors are a type of superconducting detector that offers high energy resolution based on their sharp resistance-temperature feature in the superconducting-to-normal transition. TES X-ray microcalorimeters have typically…

Instrumentation and Detectors · Physics 2019-03-26 Daikang Yan , Lisa M. Gades , Tejas Guruswamy , Umeshkumar M. Patel , Orlando Quaranta , Antonino Miceli

Accurate predictions of exfoliation energies and lattice constants of layered materials hinge on a correct description of London dispersion physics. Modern a posteriori dispersion corrections in density-functional theory (DFT), such as the…

Materials Science · Physics 2026-05-22 Adrian F. Rumson , Kyle R. Bryenton , Erin R. Johnson

A plasma scenario with negative triangularity (NT) shaping is achieved on MAST-U for the first time. While edge localized modes (ELMs) are eventually suppressed as the triangularity is decreased below $\delta$ < -0.06, an extended period of…

By combining electron energy-loss spectroscopy and state-of-the-art computational methods, we were able to provide an extensive picture of the excitonic processes in $1T$-HfS$_2$. The results differ significantly from the properties of the…

Mesoscale and Nanoscale Physics · Physics 2018-10-17 Carsten Habenicht , Lorenzo Sponza , Roman Schuster , Martin Knupfer , Bernd Büchner

Electron--impact excitation of Xe atoms in pure Xe gas and in a Xe(10 %)--Ar(90 %) mixture has led to the discovery of infrared (IR) luminescence of Xe$_{2}$ excimers. The investigation of the emission spectrum at low gas density has…

Atomic Physics · Physics 2009-11-13 A. F. Borghesani , G. Carugno , I. Mogentale

In future nuclear fusion reactors high heat load events, such as edge-localised modes (ELMs), can potentially damage divertor materials and release impurities into the main plasma, limiting plasma performance. The most difficult to handle…

Plasma Physics · Physics 2016-11-24 S. Elmore , S. Y. Allan , G. Fishpool , A. Kirk , A. J. Thornton , N. R. Walkden , J. R. Harrison

A subspace of resonant magnetic perturbation (RMP) configurations for edge localized mode (ELM) suppression is predicted for H-mode burning plasmas at 15 MA current and 5.3 T magnetic field in ITER. Perturbation of the core plasma can be…

Plasma Physics · Physics 2024-12-23 H. Frerichs , J. van Blarcum , Y. Feng , L. Li , Y. Q. Liu , A. Loarte , J. -K. Park , R. A. Pitts , O. Schmitz , S. M. Yang

As a platform for optoelectronic devices based on exciton dynamics, monolayer transition metal dichalcogenides (TMDCs) are often placed near metal interfaces or inside planar cavities. While the radiative properties of point dipoles at…

Mesoscale and Nanoscale Physics · Physics 2022-03-02 Grace H. Chen , David Z. Li , Amy Butcher , Alexander A. High , Darrick E. Chang

An experimental investigation comparing the properties of plasma jets in dielectric barrier discharge (DBD) configurations using a powered electrode with and without a dielectric barrier, while keeping a second dielectric barrier over the…

Plasma Physics · Physics 2021-04-16 Fellype do Nascimento , Konstantin Kostov , Munemasa Machida , Alexander Flacker

Rapid heating of small buried regions by laser generated fast electrons may be useful for applications such as XUV radiation sources or as drivers for shock experiments. In non-structured targets the heating profile possesses a global…

Plasma Physics · Physics 2016-10-12 Holger Schmitz , Alex P. L. Robinson

We study the zero-temperature phase diagram of a symmetric electron-hole bilayer system by comparing the ground state energies of two distinct limiting cases, characterized by an electron-hole plasma or an exciton gas, respectively. For the…

Mesoscale and Nanoscale Physics · Physics 2024-04-23 Yi-Ting Tu , Seth M. Davis , Sankar Das Sarma

The hard X-ray emission from magnetars and other isolated neutron stars remains under-explored. An instrument with higher sensitivity to hard X-rays is critical to understanding the physics of neutron star magnetospheres and also the…

We have performed a statistical study of the properties of 110 bright X-ray outbursts in 36 low-mass X-ray binary transients (LMXBTs) seen with the All-Sky Monitor (2--12 keV) on board the {\it Rossi X-ray Timing Explorer} ({\it RXTE}) in…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Zhen Yan , Wenfei Yu

For the development of the X-ray Free Electron Lasers test facility (SXFEL) at SINAP, ultra-short bunch is the crucial requirement for excellent lasing performance. It's a big challenge for deflecting cavity to measure the length of…

Accelerator Physics · Physics 2014-06-04 Jian-Hao Tan , Qiang Gu , Wen-Cheng Fang , De-Chun Tong , Zhen-Tang Zhao

In this paper we present a new measurement setup, where a transitionedge sensor detector array is used to detect X-rays in particle induced X-ray emission measurements with a 2 MeV proton beam. Transition-edge sensors offer orders of…

We present a theory of bilayer two-dimensional electron systems that host a spatially indirect exciton condensate when in thermal equilibrium. Equilibrium bilayer exciton condensates (BXCs) are expected to form when two nearby semiconductor…

Mesoscale and Nanoscale Physics · Physics 2017-01-31 Feng-Cheng Wu , Fei Xue , A. H. MacDonald