0000000000418566

AUTHOR

G. Badurek

showing 3 related works from this author

Neutron measurements for advanced nuclear systems: The n_TOF project at CERN

2012

A few years ago, the neutron time-of-flight facility n_TOF was built at CERN to address some of the urgent needs of high-accuracy nuclear data for Accelerator Driven Systems and other advanced nuclear energy systems, as well as for nuclear astrophysics and fundamental nuclear physics. Thanks to the characteristics of the neutron beam, and to state-of-the-art detection and acquisition systems, high quality neutron cross-section data have been obtained for a variety of isotopes, many of which radioactive. Following an important upgrade of the spallation target and of the experimental area, a new measurement campaign has started last year. After a brief review of the most important results obt…

Nuclear and High Energy PhysicsAstrofísica nuclearNuclear engineeringNuclear Theory[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural sciences7. Clean energyNuclear physics0103 physical sciencesNuclear astrophysicsSpallationNeutron010306 general physicsNuclear ExperimentInstrumentationPhysics:Energies::Energia nuclear [Àrees temàtiques de la UPC]NeutronsLarge Hadron Collider:Física [Àrees temàtiques de la UPC]010308 nuclear & particles physicsNuclear fissionNuclear dataNeutron radiationNuclear technologyEnergia nuclearPhysics::Accelerator PhysicsFísica nuclearSpallation Neutron Source
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Measurement of the n-TOF beam profile with a micromegas detector

2004

A Micromegas detector was used in the neutron Time-Of-Flight (n_TOF) facility at CERN to evaluate the spatial distribution of the neutron beam as a function of its kinetic energy. This was achieved over a large range of neutron energies by using two complementary processes: at low energy by capture of a neutron via the 6Li(n,[alpha])t reaction, and at high energy by elastic scattering of neutrons on gas nuclei (argon+isobutane or helium+isobutane). Data are compared to Monte Carlo simulations and an analytic function fitting the beam profile has been calculated with a sufficient precision to use in neutron capture experiments at the n_TOF facility. http://www.sciencedirect.com/science/artic…

Elastic scatteringPhysicsNuclear and High Energy PhysicsArgonPhysics::Instrumentation and DetectorsAstrophysics::High Energy Astrophysical PhenomenaBeam profileNuclear Theorychemistry.chemical_elementMicroMegas detectorNUCLEAR PHYSICSNeutron radiationNuclear physicsNeutron capturechemistryNEUTRON BEAMSNeutron cross sectionMICROMEGAS DETECTORNeutron detectionNeutron beam profilerNeutronNuclear ExperimentInstrumentationMicromegas
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Measurement of the Coherent Neutron Scattering Length of (3) He.

2005

By means of neutron interferometry the s-wave neutron scattering length of the (3)He nucleus was re-measured at the Institut Laue-Langevin (ILL). Using a skew symmetrical perfect crystal Si-interferometer and a linear twin chamber cell, false phase shifts due to sample misalignment were reduced to a negligible level. Simulation calculations suggest an asymmetrically alternating measuring sequence in order to compensate for systematic errors caused by thermal phase drifts. There is evidence in the experiment's data that this procedure is indeed effective. The neutron refractive index in terms of Sears' exact expression for the scattering amplitude has been analyzed in order to evaluate the m…

Physicsbusiness.industryGeneral EngineeringPhase (waves)Neutron scatteringelastic neutron scatteringneutron interferometryproperties of the 3He nucleusArticleComputational physicsScattering amplitudeInterferometryOpticsPerfect crystalNISTNeutronreal part of the coherent scattering lengthbusinessRefractive indexfew body systemsJournal of research of the National Institute of Standards and Technology
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