Search results for "Fusion-evaporation Reactions"

showing 5 items of 5 documents

Towards saturation of the electron-capture delayed fission probability: The new isotopes $^{240}Es$ and $^{236}Bk$

2016

Abstract The new neutron-deficient nuclei 240 Es and 236 Bk were synthesised at the gas-filled recoil separator RITU. They were identified by their radioactive decay chains starting from 240 Es produced in the fusion–evaporation reaction 209 Bi( 34 S,3n) 240 Es. Half-lives of 6 ( 2 ) s and 22 − 6 + 13 s were obtained for 240 Es and 236 Bk, respectively. Two groups of α particles with energies E α = 8.19 ( 3 ) MeV and 8.09 ( 3 ) MeV were unambiguously assigned to 240 Es. Electron-capture delayed fission branches with probabilities of 0.16 ( 6 ) and 0.04 ( 2 ) were measured for 240 Es and 236 Bk, respectively. These new data show a continuation of the exponential increase of ECDF probabilitie…

Electron-capture delayed fissionNuclear and High Energy PhysicsElectron captureFissionFusion–evaporation reaction236[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]236 Bk01 natural sciences7. Clean energyRecoil separatorNuclear physicsfusion-evaporation reactionsE236Bk240Es240 Es0103 physical sciencesddc:530010306 general physicsα decayisotopesPhysics240Isotopeta114Isotopes with mass 236–240010308 nuclear & particles physicslcsh:QC1-999Exponential functionBkmassAtomic physicsSaturation (chemistry)Fusion–evaporation reactionsα particleslcsh:PhysicsRadioactive decay
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Production of neutron deficient rare isotope beams at IGISOL; on-line and off-line studies

2004

This article reports on recent on-line yield measurements employing the light-ion and heavy-ion reaction-based ion guide systems and new results on a-recoil ion transport properties in ion guides with and without electric fields. In addition, the presently used ion guide designs for fusion evaporation reactions are introduced. The present study investigated different schemes for ion extraction from the gas cell. The addition of an extra ring electrode between the traditional skimmer electrode and the exit hole led to transmission independent of the primary beam intensity as opposed to strong intensity dependence observed earlier with the plain skimmer only. Furthermore, the mass resolving p…

FUSION-EVAPORATION REACTIONSISOMERNuclear and High Energy PhysicsEFFICIENCYIon beamChemistryHF-171Buffer gasion guideElectronIon gunSTATEon-line isotope separationIonION-GUIDE TECHNIQUEIon beam depositionPhysics::Plasma PhysicsNeutronSEPARATOR ONLINEAtomic physicsLASER SPECTROSCOPYSPIGInstrumentationIon transporterNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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Interaction position resolution simulations and in-beam measurements of the AGATA HPGe detectors

2011

WOS: 000290082600015

Nuclear and High Energy PhysicsFusion-evaporation ReactionsPhysics::Instrumentation and Detectorsg-ray trackingAstrophysics::High Energy Astrophysical PhenomenaMonte Carlo methodEvaporationRay tracking[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural sciencesParticle detectorNuclear physicsAGATA Fusion-evaporation reactions HPGe detectors Monte Carlo Simulation Ray tracking; Computer simulation Evaporation Monte Carlo methods Phase transitions; DetectorsHPGe Detectors0103 physical sciencesNuclear Experiment010306 general physicsInstrumentationGamma-ray TrackingPhysics010308 nuclear & particles physics4. EducationResolution (electron density)DetectorMonte Carlo SimulationMonte Carlo methodsDetectorsComputer simulationSemiconductor detectorPhase transitionsMonte Carlo SimulationsMeasuring instrumentHigh Energy Physics::ExperimentAGATAAGATABeam (structure)
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Production of refractory elements close to the Z=N line using the ion-guide technique

1998

Production of neutron-deficient isotopes of refractory elements in the A = 80-88 region was studied using the IGISOL technique and the 165 MeV Si-32 + Ni-nat reaction. Radioactive isotopes of Y through Mo could be produced up to the M-T = + 1 line. New information on the decay of the A = 82 and 85 nuclei, including a more detailed decay scheme and more accurate half-life for Y-82, was obtained. (C) 1998 Elsevier Science B.V. All rights reserved.

Nuclear and High Energy PhysicsIsotopes of germaniumAnalytical chemistryONLINE[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural sciencesY-81Isotopes of oxygenNuclear physicsIsotopes of protactinium0103 physical sciencesNEUTRON-DEFICIENT ISOTOPES010306 general physicsInstrumentationIsotopes of europiumPhysicsDecay schemeIsotope010308 nuclear & particles physicsRefractory metalsIGISOL TECHNIQUEheavy-ion fusion-evaporation reactionsBeta decayrefractory elementsbeta decayDECAY
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Towards saturation of the electron-capture delayed fission probability : The new isotopes 240Es and 236Bk

2017

The new neutron-deficient nuclei 240Es and 236Bk were synthesised at the gas-filled recoil separator RITU. They were identified by their radioactive decay chains starting from 240Es produced in the fusion–evaporation reaction 209Bi(34S,3n)240Es. Half-lives of 6(2) sand 22+13−6swere obtained for 240Es and 236Bk, respectively. Two groups of αparticles with energies Eα=8.19(3) MeVand 8.09(3) MeVwere unambiguously assigned to 240Es. Electron-capture delayed fission branches with probabilities of 0.16(6)and 0.04(2)were measured for 240Es and 236Bk, respectively. These new data show a continuation of the exponential increase of ECDF probabilities in more neutron-deficient isotopes. peerReviewed

fusion-evaporation reactionsisotoopitmasselectron-capture delayed fissionα decay
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