Optimised non-invasive method to determine 238U-captures-to-total-fissions in reactor fuel

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We measured the prompt neutron decay constant

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alpha of the CROCUS zero-power reactor at the Swiss Federal Institute of Technology Lausanne using cross-power spectral density (CPSD) analysis of gamma-gamma correlations from two trans-stilbene org ...

Using a data sample of (10087 +/- 44)x10(6) J/psi events collected with the BESIII detector, we search for the decays eta/eta' -> e (+) e (-)mu (+)mu (-) and eta'->mu(+)mu(-)mu(+)mu(-) via the radiative decaysJ/psi ->gamma eta/gamma eta '. No excess of eve ...

The branching fraction of the decay B + → ψ ( 2 S ) ϕ ( 1020 ) K + , relative to the topologically similar decay B + → J / ψ ϕ ( 1020 ) K + , is measured using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8 ...

A study is presented of B+→KS0K-π+K+ and B+→KS0K+π-K+ decays based on the analysis of proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb-1. The KS0K ...

Microstructural evolution during in-pile irradiation, radiation damage effects and fission products behavior in UO2 nuclear fuel are key issues in understanding and for the modeling of the performance as well as safety characteristics of nuclear fuels in t ...

Gamma-ray spectroscopy is an effective technique for radioactive material characterization, routine inventory verification, nuclear safeguards, health physics, and source search scenarios. Gamma-ray spectrometers typically cannot be operated in the immedia ...

Noise measurements in light water reactor systems aid in generating validation data for integral point kinetic parameter predictions and generating monitoring parameters for reactor safety and safeguards. The CROCUS zero-power reactor has been used to supp ...

In response to the need for validating high-fidelity deterministic neutronics solvers capable of providing pin-resolved neutron flux distributions, intra-pin reaction rates measurements were performed in the CROCUS experimental reactor. A specially designe ...

Autonomous nuclear reactor monitoring is a key aspect of the International Atomic Energy Agency’s strategy to ensure nonproliferation treaty compliance. From the rise of small modular reactor technology, decentralized nuclear reactor fleets may strain the ...

Nuclear fusion presents a promising clean energy source to mitigate future energy crises, with magnetic confinement fusion well-positioned to provide a baseload scenario to power future reactors. The unmitigated power exhaust of such reactors threatens its ...

Nuclear power is a powerful technology that plays an important role in the fight against climate change, and research is continuously engaged in studies that could further improve its safety. After the Fukushima accident, Accident Tolerant Fuels research h ...

Nuclear Thermal Propulsion systems are one of the technologies to unlock interplanetary travel in the solar system and there is currently an increasing demand for accurately simulating such systems. The present paper investigates the KIWI-B-4E reactor, the ...

The determination of resonance parameters for neutron interactions with material is a complex process. In most cases it is very difficult to de termine an ac curate es timate of th e fu ll se t of parameters from an analysis of energy dependent cross secti ...

Conducting neutron scattering experiments in the presence of high pulsed magnetic fields, namely above 40 T, provides valuable information about the magnetic structures of materials. However, these experiments are challenging and time-consuming because the ...

A hybrid photothermal catalytic system, which combines both the photochemical (light) and thermal (heat) activation pathways over a bifunctional catalyst, has demonstrated remarkable levels of reaction activity and selectivity when compared with individual ...

DEMO will have a limited diagnostic set for optimization of reactor performance, and limited diagnostic coverage due to challenging reactor conditions. This poses challenges for control, especially for detachment control which is planned to be performed wi ...

This article outlines the advancements made in broadening the application scope of the OpenMC neutron transport code to include thermohydraulic coupling and nuclear data uncertainty propagation. These developments primarily involve the incorporation of the ...

This study focuses on Pristine_180956.78-294759.8 (hereafter P180956, [Fe/H] = -1.95 +/- 0.02), a star selected from the Pristine Inner Galaxy Survey (PIGS), and followed-up with the recently commissioned Gemini High-resolution Optical SpecTrograph (GHOST) ...

The mechanical analysis of nuclear fuel behavior under base-irradiation conditions has traditionally been performed adopting the small-strain approximation. However, many cases of interest for fuel behavior involve the occurrence of large rod deformations ...

Using (27.12 +/- 0.14) x 10(8) psi(3686) events collected with the BESIII detector, we present the first observation of the decays chi(cJ) -> Lambda(Lambda) over bar omega, where J = 0, 1, 2, with statistical significances of 11.7s, 11.2s, and 11.8s. The b ...

Optimised non-invasive method to determine 238U-captures-to-total-fissions in reactor fuel

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Welch Method and Bootstrapping Applied to Subcritical Gamma Noise

Search for the Double Dalitz Decays η/η' →e + e -μ +μ - and η'→μ+μ-μ+μ-

Branching fraction measurement of the decay B+→ψ(2S)ϕ(1020)K+

Study of light-meson resonances decaying to K S0 Kπ in the B → (K S0 Kπ)K channels

Atomic level insight into irradiation effects in nuclear fuel materials

Gamma-ray Spectroscopy in Low-Power Nuclear Research Reactors

Neutron-Gamma Noise Measurements in a Zero-Power Reactor Using Organic Scintillators

Intra-pin Reaction Rate Measurements in the CROCUS Experimental Reactor

Gamma noise to non-invasively monitor nuclear research reactors

Experimental study and interpretative modelling of the Power Exhaust in Configurations with Multiple X-Points in TCV

Innovative thermophysical characterization of an ATF composite cladding: the case of silicon carbide

Full core study of the KIWI-B-4E Nuclear Thermal Propulsion system using OpenMC and GeN-Foam

Improved Evaluated Nuclear Data in the Resonance Region by Combining Energy Dependent Measurements and Depletion Calculations: Application to Pu-239+n, Pu-240+n and Pu-241+n

High brightness neutron source optimized for very high pulsed magnetic field experiments

Heterogeneous catalysis via light-heat dual activation: A path to the breakthrough in C1 chemistry

Demonstration of a sparse sensor placement technique to the limited diagnostic set in a fusion power plant

Tool Developments in the OpenMC Code: Correlated Sampling and Transient Fission Matrix Approach Coupled to OpenFOAM

GHOST commissioning science results - II: a very metal-poor star witnessing the early galactic assembly

Extension of the OFFBEAT fuel performance code to finite strains and validation against LOCA experiments

Study of the decays χcJ → Λ(Λ)over-barω