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Aluminum is a crucial material in the nuclear industry, valued for its ability to perform reliably over time. The manuscript focuses on validating aluminum neutron transport libraries. The validation was conducted by activating samples in…

The neutron flux at low energy ($E_n\leq15$ MeV) resulting from the radioactivity of the rock in the underground cavern of the India-based Neutrino Observatory is estimated using Geant4-based Monte Carlo simulations. The neutron production…

Instrumentation and Detectors · Physics 2016-01-20 N. Dokania , V. Singh , S. Mathimalar , A. Garai , V. Nanal , R. G. Pillay , K. G. Bhushan

Cerenkov technology is often the optimal choice for particle identification in high energy particle collision applications. Typically, the most challenging regime is at high pseudorapidity (forward) where particle identification must…

Instrumentation and Detectors · Physics 2016-06-28 M. Blatnik , K. Dehmelt , A. Deshpande , D. Dixit , N. Feege , T. K. Hemmick , B. Lewis , M. L. Purschke , W. Roh , F. Torales-Acosta , T. Videbaek , S. Zajac

Time-dependent speckle pattern of paraelectric barium titanate observed in a soft x-ray laser pump-probe measurement is theoretically investigated as a correlated optical response to the pump and probe pulses. The scattering probability is…

Materials Science · Physics 2009-04-27 Kai Ji , Kazumichi Namikawa , Hang Zheng , Keiichiro Nasu

Fission events from Special Nuclear Material (SNM), such as highly enriched uranium or plutonium, can produce simultaneous emission of multiple neutrons and high energy gamma-rays. The observation of time correlations between any of these…

Instrumentation and Detectors · Physics 2011-05-12 M. Sweany , A. Bernstein , N. S. Bowden , S. Dazeley , G. Keefer , R. Svoboda , M. Tripathi

This paper describes a novel directional neutron detector prototype. The low pressure time projection chamber uses a mix of helium and CF4 gases. The detector reconstructs the energy and angular distribution of fast neutron recoils. This…

Instrumentation and Detectors · Physics 2013-01-21 J. Lopez , K. Terao , J. M. Conrad , D. Dujmic , L. Winslow

Isotopic ratios have been used as chemical diagnostics to investigate the origin of the material in the Solar System. We have determined the HCN, HNC, and N2H+ isotopic ratios and the chemical age in a large sample of 23 starless cores…

Ambient neutrons are one of the most serious backgrounds for underground experiments in search of rare events. The ambient neutron flux in an underground laboratory of Kamioka Observatory was measured using a $\mathrm{^3He}$ proportional…

A complete model of helium-like line and continuum emission has been incorporated into the plasma simulation code Cloudy. All elements between He and Zn are treated, any number of levels can be considered, and radiative and collisional…

Astrophysics · Physics 2019-08-19 R. L. Porter , G. J. Ferland

We examine uncertainties in the analysis of the reactor neutrino anomaly, wherein it is suggested that only about 94% of the emitted antineutrino flux was detected in short baseline experiments. We find that the form of the corrections that…

Nuclear Theory · Physics 2014-05-28 A. C. Hayes , J. L. Friar , G. T. Garvey , G. Jungman , Guy Jonkmans

Ambient neutrons are one of the most serious backgrounds for underground experiments searching for rare events. The ambient neutron flux in an underground laboratory of Kamioka Observatory was measured using a $\mathrm{^3He}$ proportional…

A suite of synthetic nuclear diagnostics has been developed to post-process radiation hydrodynamics simulations performed with the code Chimera. These provide experimental observables based on simulated capsule properties and are used to…

Nuclear transparency, Tp(A), is a measure of the average probability for a struck proton to escape the nucleus without significant re-interaction. Previously, nuclear transparencies were extructed for quasi-elastic A(e,e'p) knockout of…

Nuclear Experiment · Physics 2019-08-13 O. Hen , H. Hakobyan , R. Shneor , E. Piasetzky , L. B. Weinstein , W. K. Brooks , S. May-Tal Beck , S. Gilad

We report first results obtained during the commissioning of the Laser Resonance Chromatography (LRC) apparatus, which is conceived to enable atomic structure investigations in the region of the heaviest elements beyond nobelium. In our…

Reactor antineutrino experiment are used to study neutrino oscillation, search for signatures of nonstandard neutrino interaction, and monitor reactor operation for safeguard application. Reactor simulation is an important source of…

Nuclear Experiment · Physics 2015-03-18 X. B. Ma , F. Lu , L. Z. Wang , Y. X. Chen , W. L. Zhong , F. P. An

A method is presented for inferring the deuterium fuel ion temperature from neutron counts measured with fast liquid scintillators in conditions where the ion velocity distribution is Maxwellian. Local neutron count rates at each…

Precision measurements of slow neutron cross sections with atoms have several scientific applications. In particular the n-$^{4}$He s-wave scattering length is important to know both for helping to constrain the nuclear three-body…

We have performed new neutron diffuse scattering measurements in Fe$_{1-x}$Cr$_x$ solid solutions, in a concentration range 0$<$x$<$0.15, where the atomic distribution shows an inversion of the short range order. By optimizing the…

Strongly Correlated Electrons · Physics 2015-05-19 I. Mirebeau , G. Parette