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We investigate a model nanopore sensor that is able to detect analyte ions that are present in the electrolyte solution in very small concentrations. The nanopore selectively binds the analyte ions with which the local concentrations of the…

Applied Physics · Physics 2018-12-31 Eszter Mádai , Mónika Valiskó , Dezső Boda

We present a comprehensive analysis of the X-ray observations obtained from \xmm\, and \chandra\, for a sample of bona-fide Compact Symmetric Objects (CSOs) to investigate their X-ray emission properties. Ultimately, we obtain 32 effective…

High Energy Astrophysical Phenomena · Physics 2025-02-04 Ying-Ying Gan , Su Yao , Tan-Zheng Wu , Hai-Ming Zhang , Jin Zhang

We report on results from a one-year soft X-ray observing campaign of the ultraluminous X-ray pulsar NGC 300 ULX-1 by the Neutron star Interior Composition Explorer (NICER) during 2018--2019. Our analysis also made use of data from…

High Energy Astrophysical Phenomena · Physics 2022-12-07 Mason Ng , Ronald A. Remillard , James F. Steiner , Deepto Chakrabarty , Dheeraj R. Pasham

Instrument backgrounds at neutron scattering facilities directly affect the quality and the efficiency of the scientific measurements that users perform. Part of the background at pulsed spallation neutron sources is caused by, and…

Plasma treatment of seeds is an efficient procedure to accelerate germination, to improve initial stages of plant growth and for protection against pathogens infection. Most studies relate these beneficial effects with biochemical…

Coherent elastic neutrino-nucleus scattering (CE$\nu$NS) and other rare-event physics searches, like dark matter detection, have been especially furthered by increasing sensitivity to low-energy particle interactions. Experiments using…

Instrumentation and Detectors · Physics 2023-10-09 Charles Mark Lewis

As the Advanced CCD Imaging Spectrometer (ACIS) on the Chandra X-ray Observatory enters its fifteenth year of operation on orbit, it continues to perform well and produce spectacular scientific results. The response of ACIS has evolved over…

Instrumentation and Methods for Astrophysics · Physics 2015-06-22 Catherine E. Grant , Mark W. Bautz , Peter G. Ford , Paul P. Plucinsky

We present a detailed analysis of XMM-Newton EPIC-pn data for the Seyfert-1 galaxy NGC 4593. We discuss the X-ray spectral properties of this source as well as its variations with time. The 0.5-10 keV spectrum shows significant complexity…

Astrophysics · Physics 2011-02-11 L. W. Brenneman , C. S. Reynolds , J. Wilms , M. E. Kaiser

Recently, the use of $\mathrm{H}_2^+$ ions instead of protons to overcome space charge challenges in compact cyclotrons has received much attention. This technique has the potential to increase the available beam current from compact…

Accelerator Physics · Physics 2022-01-05 Daniel Winklehner , Janet M. Conrad , Joseph Smolsky , Loyd Waites

Ion extraction from DECRIS-PM source is simulated by using initial distributions of ions at the extraction aperture obtained with NAM-ECRIS code. Three-dimensional calculations of plasma emissive surface are done and ions are traced in the…

Accelerator Physics · Physics 2018-10-17 V. Mironov , S. Bogomolov , A. Bondarchenko , A. Efremov , V. Loginov

We investigate data compression schemes for proposed all-sky diffraction-limited visible/NIR sky surveys aimed at the dark energy problem. We show that lossy square-root compression to 1 bit of noise per pixel, followed by standard lossless…

Instrumentation and Methods for Astrophysics · Physics 2014-11-20 Gary M. Bernstein , Chris Bebek , Jason Rhodes , Chris Stoughton , R. Ali Vanderveld , Penshu Yeh

Porous graphene has high mechanical strength and atomic layer thickness, which make it a promising material for material separation and biomolecule sensing. Electrostatic interactions between charges in aqueous solution are a kind of strong…

Chemical Physics · Physics 2016-08-02 Yinghua Qiu , Kun Li , Weiyu Chen , Wei Si , Qiyan Tan , Yunfei Chen

Barnard B1b has revealed as one of the most interesting globules from the chemical and dynamical point of view. It presents a rich molecular chemistry characterized by large abundances of deuterated and complex molecules. Furthermore, it…

Astrophysics of Galaxies · Physics 2016-10-05 A. Fuente , J. Cernicharo , E. Roueff , M. Gerin , J. Pety , N. Marcelino , R. Bachiller , B. Lefloch , O. Roncero , A. Aguado

A monitoring system for fast neutrons is planned in the COSINE experiment, a dark matter experiment with NaI crystals. We pursued several R&D approaches for a neutron detector using a liquid scintillator (LS). A pulse shape discrimination…

Instrumentation and Detectors · Physics 2018-07-25 G. Adhikari , P. Adhikari , C. Ha , E. J. Jeon , K. W. Kim , N. Y. Kim , Y. D. Kim , Y. J. Ko , H. S. Lee , J. Lee , M. H. Lee , R. H. Maruyama , S. L. Olsen , H. Prihtiadi

We have recently performed experiments to test the effectiveness of three ion-clearing strategies in the Cornell high intensity photoinjector: DC clearing electrodes, bunch gaps, and beam shaking. The photoinjector reaches a new regime of…

Accelerator Physics · Physics 2016-04-20 Steven Full , Adam Bartnik , Ivan Bazarov , John Dobbins , Bruce Dunham , Georg Hoffstaetter

We propose to search for coherent neutrino-nucleus scattering (CNNS)by means of a triple-sectioned low background proportional counter. As a working medium we plan to use argon and xenon at about 1 MPa. We have shown using bench-scale…

Instrumentation and Detectors · Physics 2013-12-02 A. V. Kopylov , I. V. Orekhov , V. V. Petukhov , A. E. Solomatin

Field emission is one of the factors that can limit the performance of superconducting radio frequency cavities. In order to reduce possible field emission in LCLS-II (Linac Coherent Light Source II), we are developing plasma processing for…

Power dissipation during test is a major challenge in testing integrated circuits. Dynamic power has been the dominant part of power dissipation in CMOS circuits, however, in future technologies the static portion of power dissipation will…

Hardware Architecture · Computer Science 2011-11-09 Shervin Sharifi , Javid Jaffari , Mohammad Hosseinabady , Ali Afzali-Kusha , Zainalabedin Navabi

With the advent of high precision neutrino scattering experiments comes the need for improved radiative corrections. We present a phenomenological analysis of some contributions to the production of photons in neutrino neutral current…

High Energy Physics - Phenomenology · Physics 2009-09-24 James Jenkins , Terry Goldman