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Attosecond transient absorption spectroscopy (ATAS) has emerged as a powerful technique within the field of attosecond science, combining extremely high temporal and excellent spectral resolution. So far, ATAS has been implemented in…

In nanomechanical photothermal absorption spectroscopy and microscopy, the measured substance becomes a part of the detection system itself, inducing a nanomechanical resonance frequency shift upon thermal relaxation. Suspended,…

Instrumentation and Detectors · Physics 2023-06-30 Robert G. West , Kostas Kanellopulos , Silvan Schmid

Inelastic electron scattering by the adsorbate covered Pt(100) single crystal surface is studied by Disappearance Potential Spectroscopy and density of states (DOS) calculations. Two peculiar channels of elastic electron consumption are…

Materials Science · Physics 2012-09-17 A. R. Cholach , V. M. Tapilin

Spectrometry is a general physical-analysis approach for investigating light-matter interactions. However, the complex designs of existing spectrometers render them resistant to simplification and miniaturization, both of which are vital…

In PET a high percentage of gamma photons being detected undergo Compton scattering in the scintillator. Scintillator blocks are often built from optically isolated crystals. Depending on the angle of incidence and the scintillator geometry…

Medical Physics · Physics 2023-11-01 Katrin Herweg , Volkmar Schulz , David Schug

Single-atom catalysts (SACs), composed of isolated metal atoms dispersed on solid supports, represent the ultimate expression of atomic efficiency in catalysis. Their remarkable activity and selectivity arise from local coordination…

Materials Science · Physics 2026-03-27 Petr Lazar , Michal Otyepka

We present an improved approach for detection of trace amounts of $^{238}$U by means of neutron activation analysis (NAA). The analysis enhancement is obtained by utilizing $\gamma$-$\gamma$ coincidence counting. An empirical method for…

Instrumentation and Detectors · Physics 2021-10-11 Raymond Hei Man Tsang , Omar Nusair , Andreas Piepke

In the scientific literature little attention has been given to the use of dynamic light scattering (DLS) as a tool for extracting the thermodynamic information contained in the absolute intensity of light scattered by gels. In this article…

Chemical Physics · Physics 2015-03-18 Cyrille Rochas , Erik Geissler

We propose an improved structure of an optical biosensor based on a photonic crystal (PC) with a defect layer (DL), which can detect the concentration of SARS-CoV-2 in water by defect mode (DM) shift. We investigated 4 types of defective…

Optics · Physics 2022-08-10 I. M. Efimov , N. A. Vanyushkin , A. H. Gevorgyan

We have developed a digital fast Fourier transform (FFT) spectrometer made of an analog-to-digital converter (ADC) and a field-programmable gate array (FPGA). The base instrument has independent ADC and FPGA modules, which allow us to…

Instrumentation and Methods for Astrophysics · Physics 2017-07-26 Kazumasa Iwai , Yûki Kubo , Hiromitsu Ishibashi , Takahiro Naoi , Kenichi Harada , Kenji Ema , Yoshinori Hayashi , Yuichi Chikahiro

Over almost three decades the TAUP conference has seen a remarkable momentum gain in direct dark matter search. An important accelerator were first indications for a modulating signal rate in the DAMA/NaI experiment reported in 1997. Today…

A neutron detector based on EJ301 liquid scintillator has been employed at EAST to measure the neutron energy spectrum for D-D fusion plasma. The detector was carefully characterized in different quasi-monoenergetic neutron fields generated…

Instrumentation and Detectors · Physics 2013-04-30 Xi Yuan , Xing Zhang , Xufei Xie , G. Gorini , Zhongjing Chen , Xingyu Peng , Jinxiang Chen , Guohui Zhang , Tieshuan Fan , Guoqiang Zhong , Liqun Hu , Baonian Wan

We present a data acquisition~(DAQ) software based on the MIDAS framework, specifically for gaseous detectors to support the detector deployments and applications. It implements a comprehensive suite of functions, including parameter…

Instrumentation and Detectors · Physics 2026-04-14 Yuanchun Liu , Tao Li , Yu Chen , Ke Han , Leyan Li , Shaobo Wang , Wei Wang

Present paper studies the $\gamma$-ray spectrum observed using NaI(Tl) scintillation detector over a year. The paper reports the presence of a distinct diurnal pattern in the total number of $\gamma$-ray counts detected by the NaI detector.…

Atmospheric and Oceanic Physics · Physics 2020-07-08 Gauri Datar , Geeta Vichare , C. Selvaraj , Ankush Bhaskar , Anil Raghav

We report a new theoretical method for X-ray absorption spectroscopy (XAS) in condensed matter which is based on the multi-channel multiple scattering theory of Natoli et al. and the eigen-channel R-matrix method. While the highly flexible…

Materials Science · Physics 2009-11-10 Peter Krüger , Calogero R. Natoli

The photo-neutron cross sections of $^{162,163}\rm{Dy}$ have been measured for the first time in an energy region from the neutron threshold ($S_n$) up to $\approx$ $13$~MeV. The ($\gamma$,n) reaction was induced with quasi-monochromatic…

Investigated in this work were sensitivities of a prototype detector for the detection of low-mass dark matter particles produced at the Spallation Neutron Source at the Oak Ridge National Laboratory in two years of data taking. The…

Instrumentation and Detectors · Physics 2020-06-23 Dmitry Chernyak , Daniel Pershey , Jing Liu , Keyu Ding , Nathan Saunders , Tupendra Oli

Tag signal detection is one of the key tasks in ambient backscatter communication (AmBC) systems. However, obtaining perfect channel state information (CSI) is challenging and costly, which makes AmBC systems suffer from a high bit error…

Signal Processing · Electrical Eng. & Systems 2020-11-16 Chang Liu , Zhiqiang Wei , Derrick Wing Kwan Ng , Jinhong Yuan , Ying-Chang Liang

We evaluate, by means of molecular dynamics simulations employing a realistic DNA coarse-grained model, the phase behaviour and the structural and dynamic properties of tetravalent DNA nanostars, i.e. nanoconstructs completely made of DNA.…

Soft Condensed Matter · Physics 2014-10-01 Lorenzo Rovigatti , Francesca Bomboi , Francesco Sciortino
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