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As part of the spin physics program at Jefferson Laboratory (JLab), a M\o ller polarimeter was developed to measure the polarization of electron beam of energies 0.8 to 5.0 GeV. A unique signature for M\o ller scattering is obtained using a…

The joint detection of the gravitational wave (GW) GW170817 and its electromagnetic (EM) counterparts GRB170817A and kilonova AT 2017gfo has triggered extensive study of the EM emission of binary neutron star mergers. A parameter which is…

High Energy Astrophysical Phenomena · Physics 2019-08-28 Hsin-Yu Chen , Salvatore Vitale , Ramesh Narayan

A shearing interferometer is presented which uses polarization control to shear the wavefront and to modulate the interference pattern. The shear is generated by spatial walk-off in a birefringent crystal. By adjusting the orientation of…

Optics · Physics 2012-12-11 Peter Beyersdorf , Mark Cordier

Exoplanet emission spectra are often modelled assuming that the hemisphere observed is well represented by a horizontally homogenised atmosphere. However this approximation will likely fail for planets with a large temperature contrast in…

Earth and Planetary Astrophysics · Physics 2021-06-04 Jake Taylor , Vivien Parmentier , Patrick G. J. Irwin , Suzanne Aigrain , Elspeth K. H. Lee , Joshua Krissansen-Totton

In this study, we investigated Rydberg atom-based microwave electrometry using polarization spectroscopy in a room-temperature vapor cell. By measuring Autler-Townes splitting in the electromagnetically induced transparency (EIT) spectrum,…

The X-ray emission from the super-massive star Eta Carinae is simulated using a three dimensional model of the wind-wind collision. In the model the intrinsic X-ray emission is spatially extended and energy dependent. Absorption due to the…

High Energy Astrophysical Phenomena · Physics 2015-05-13 E. R. Parkin , J. M. Pittard , M. F. Corcoran , K. Hamaguchi , I. R. Stevens

Off-resonant optical imaging is the most popular method for continuous monitoring of a Bose-Einstein condensate (BEC). However, the disturbance caused by scattered photons places a serious limitation on the lifetime of such…

Quantum Gases · Physics 2015-06-01 M. R. Hush , S. S. Szigeti , A. R. R. Carvalho , J. J. Hope

One of the defining characteristics of a solar flare is the impulsive formation of very high temperature plasma. The properties of the thermal emission are not well understood, however, and the analysis of solar flare observations is often…

Solar and Stellar Astrophysics · Physics 2015-06-12 Harry P. Warren , John T. Mariska , George A. Doschek

We theoretically study the superradiant gain and the direction of this coherent radiant for an array of Bose-Einstein condensates in an optical lattice. We find that the density grating is formed to amplify the scattering light within the…

Quantum Physics · Physics 2009-11-13 Xu Xu , Xiaoji Zhou , Xuzong Chen

We discuss several possible experimental signatures of the Bose-Einstein condensation (BEC) transition for an ultracold Bose gas in an inhomogeneous optical lattice. Based on the commonly used time-of-flight imaging technique, we show that…

Superconductivity · Physics 2008-05-21 G. -D. Lin , Wei Zhang , L. -M. Duan

The Japanese Experiment Module (JEM) Extreme Universe Space Observatory (EUSO) will be launched and attached to the Japanese module of the International Space Station (ISS). Its aim is to observe UV photon tracks produced by ultra-high…

In this report, we present the energy calibration of the Hall B bremsstrahlung tagging system at the Thomas Jefferson National Accelerator Facility. The calibration was performed using a magnetic pair spectrometer. The tagged photon energy…

Instrumentation and Detectors · Physics 2009-11-13 S. Stepanyan , S. Boyarinov , H. Egiyan , L. Guo , D. Dale , M. Gabrielyan , L. Gan , A. Gasparian , A. Glamazdin , B. Mecking , I. Nakagawa , A. Teymurazyan , M. H. Wood

In this study, we investigated the terahertz radiation from a truncated edge square mesa structure made from a superconducting Bi_{2}Sr_{2}CaCu_{2}O_{8+{\delta}} . Using a commercial software, the polarization characteristics were…

Superconductivity · Physics 2016-05-10 A. Elarabi , Y. Yoshioka , M. Tsujimoto , Y. Nakagawa , I. Kakeya

Detection of electromagnetic (EM) counterparts of pre-coalescence binaries has very important implications for our understanding of the evolution of these systems as well as the associated accretion physics. In addition, a combination of EM…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Tamara Bogdanovic , Michael Eracleous , Steinn Sigurdsson

The postulates of the eigenstate thermalization hypothesis (ETH) express that thermalization occurs due to the individual eigenstate of the system's Hamiltonian. But the ETH put no light on the dynamics that lead toward thermalization. In…

Quantum Gases · Physics 2022-11-02 Javed Akram , Asad Hussain , Muhammad Nouman , Jameel Hussain

We describe the design and expected performance of Clover, a new instrument designed to measure the B-mode polarization of the cosmic microwave background. The proposed instrument will comprise three independent telescopes operating at 90,…

The usage of optical transition radiation for profile monitoring of relativistic electron beams is well known. This report presents the case for beam diagnostic application of optical transition radiation for non-relativistic ion beams. The…

Instrumentation and Detectors · Physics 2022-08-17 R. Singh , T. Reichert , B. Walasek-Hoehne

We have theoretically demonstrated the emission of circularly-polarized terahertz (THz) waves from intrinsic Josephson junctions (IJJs) which is locally heated by an external heat source such as the laser irradiation. We focus on a…

Superconductivity · Physics 2017-05-15 Hidehiro Asai , Shiro Kawabata

We report the first measurements and detailed analysis of extreme ultraviolet (EUV) spectra (4 nm to 20 nm) of highly-charged tungsten ions W$^{54+}$ to W$^{63+}$ obtained with an electron beam ion trap (EBIT). Collisional-radiative…

Studied experimentally the origin of the non-zero reflection of p-polarized radiation (TM) of Brewster's angle. The results have shown the residual reflected light in the vicinity of Brewster angle occurs due to inaccessibility 100%…

Optics · Physics 2015-10-26 Eugene A. Tikhonov
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