Showing papers in "Nuclear Science and Techniques in 2019"

TL;DR: The protein complex crystallographic beamline at the Shanghai Synchrotron Radiation Facility is one of the five beamlines dedicated to protein sciences operated by National Facility for Protein Science (Shanghai, China).

TL;DR: In this paper, the design and performance of a new endstation at beamline 02B at the Shanghai Synchrotron Radiation Facility for ambient pressure X-ray photoelectron spectroscopy studies are discussed.

TL;DR: In this article, waste clay was cured with ethyl acetate to obtain treated clay (TC), which was modified with gallic acid to obtain a low-cost sorbent that was characterized by EDX, SEM, and FTIR analysis.

TL;DR: In this paper, the evolution of the charm hadron in hot quark matter was studied in the framework of a multiphase transport (AMPT) model, and the elliptic flow of charm hadrons was described with different parton cascade cross sections.

TL;DR: In this paper, the authors investigated the effects of a reduced rapidity, transverse momentum per nucleon, and a reduced impact parameter on the yield ratio of a single particle.

TL;DR: In this paper, a novel amidoxime-based fibrous adsorbent, denoted as PE/PP-g-(PAAc-co-PAO), was prepared by pre-irradiation grafting of acrylic acid and acrylonitrile onto polyethylene-coated polypropylene skin-core (PE/PP) fibers using 60Co γ-ray irradiation, followed by amidoximation.

TL;DR: In this paper, the mass energy absorption coefficient, effective atomic number, and electron density of some biomolecules with potential application in radiation dosimetry were calculated for their photon energy absorption (PEA) in the energy region of 1-20 MeV.

TL;DR: In this paper, the gamma radiation shielding features of several environmentally friendly materials were investigated and several attenuation parameters, such as the mass attenuation coefficient, radiation protection efficiency (RPE), and effective atomic number (Zeff), were determined experimentally and compared with numerical data obtained using WinXCom software.

TL;DR: In this paper, the activity concentration index (ACI), indoor air-absorbed dose rate (Din), annual effective dose (AEDin), from external and internal (ERn), soft tissues (HST) and lung (HL), and effective dose equivalent (Heff) were estimated to evaluate radiological hazards due to the use of these building materials: sand, cement, gravel, tiles, fly ash, white cement, and ceramic raw materials.

TL;DR: In this paper, a method for calibrating the relationship between particle energy and track diameter in a Columbia Resin #39 (CR-39) detector (TasTrak®) using 3-8-MeV protons, 6-30-meV carbon ions, and 1-5-MEV alpha particles was presented.

TL;DR: In this paper, the results of computer simulation of neutronic processes in a high-temperature gas-cooled thorium reactor for 30 different options of core loading were presented.

TL;DR: In this article, the yield ratios of neutron/proton (R(n/p)) and the yield ratio of H-box {H}/{^3}{\text{He}} with reduced rapidity from 0 to 0.5 are investigated for 50-MeV/u.

TL;DR: In this article, the authors used a multilayer fast fission chamber with 235U and 238U cells to verify the performance of the neutron total cross-sectional spectrometer.

TL;DR: Wang et al. as discussed by the authors incorporated imaging physics for a cone-beam CT into a residual convolutional neural network and proposed a new end-to-end deep learning-based method for slice-wise reconstruction.

TL;DR: In this article, a scan of the cross sections over a relatively wide range of energies can be carried out using only a single beam energy, and the result of measurement at 4.1 µm.

TL;DR: In this article, the change in concentration or position of a pin with a burnable absorber in a fuel assembly was analyzed by the HELIOS transport lattice code, and the multiplication factor and power peaking factor dependence on fuel burn up were evaluated.

TL;DR: In this article, the impregnation behavior of 2LiF-BeF2 (FLiBe) salt into a graphite matrix of fuel elements for a solid fuel thorium molten salt reactor (TMSR-SF) at pressures varying from 0.4 to 1.0

TL;DR: In this paper, the gamma-ray isotropic point source buildup factors, specifically, the energy absorption buildup factor (EABF) and exposure buildup factor, were estimated using the Geant4 (version 10.4) Monte Carlo simulation toolkit.

TL;DR: In this paper, the application of a new extraction method for efficient uranium adsorption via cost-effective hydrazine-impregnated activated carbon was described, and various experimental parameters such as time, adsorbent weight, temperature, and uranium concentration were thoroughly investigated.

TL;DR: In this paper, a multichannel low-noise electronic prototype system was designed for a pixelated CdZnTe detector, which was the result of preliminary work on a solar hard X-ray imager, which is one of the three payloads for future solar observations satellite- Advanced Space-based Solar Observatory (ASO-S).

TL;DR: In this paper, a 650-MHz 2-cell superconducting cavity was proposed and designed to meet the requirements of the Circular Electron Positron Collider (CEPC).

TL;DR: In this paper, the authors evaluated the material discrimination ability of muon scattering tomography based on experiments at the Tsinghua University cosmic ray muon tomography facility, with four materials: flour (as drugs substitute), aluminum, steel, and lead.

TL;DR: In this paper, the authors discuss the design of a source positioning system based on ultrasonic technology, aiming for a 3-cm precision over the entire 35-m diameter detector sphere.

TL;DR: In this article, a helium cryogenic system is designed by the Institute of Modern Physics, Chinese Academy of Sciences, to supply different cooling powers to the cryomodules of ion-Linac (iLinac) accelerator, which serves as the injector of the High Intensity Heavy-Ion Accelerator Facility project.

TL;DR: In this article, the authors investigated the temperature reactivity coefficient (TRC) in a thorium-based graphite-moderated molten salt reactors (smTMSRs), which are mainly affected by the molten salt volume fraction (VF) and the heavy nuclei concentration in the fuel salt (HN).

TL;DR: There are two infrared beamlines at the Shanghai synchrotron radiation facility (SSRF), BL01B and BL06B as mentioned in this paper, which are optimized for the mid and far infrared bands.

TL;DR: In this paper, the deuteron beam is delivered from a 4-MeV electrostatic accelerator and bombarded on a thick carbon target, and the neutrons are detected at 0.6-3 MeV, 1.4 MeV and 2.7 MeV.

TL;DR: In this paper, a three-dimensional X-ray crystal Bragg diffraction code, named BRIGHT, is introduced, which can be combined with other FEL-related codes, e.g., GENESIS and OPC.

TL;DR: In this paper, an improved method for sealing bolted flange connections for tubes made of dissimilar materials at high temperature is analyzed, focusing on the compensation mechanism for the difference in thermal expansion between the bolts and the flanges.

TL;DR: In this article, a discrete element method-computational fluid dynamics (DEM-CFD) approach that includes thermal conduction, radiation, and natural convection mechanisms was proposed to simulate the thermalfluid phenomena after the failure of forced circulation cooling system in a pebble-bed core.