0000000000384424

AUTHOR

F. Heiße

showing 2 related works from this author

Rate capability of a cryogenic stopping cell for uranium projectile fragments produced at 1000 MeV/u

2016

At the Low-Energy Branch (LEB) of the Super-FRS at FAIR, projectile and fission fragments will be produced at relativistic energies, separated in-flight, energy-bunched, slowed down and thermalized in a cryogenic stopping cell (CSC) filled with ultra-pure He gas. The fragments are extracted from the stopping cell using a combination of DC and RF electric fields and gas flow. A prototype CSC for the LEB has been developed and successfully commissioned at the FRS Ion Catcher at GSI. Ionization of He buffer gas atoms during the stopping of energetic ions creates a region of high space charge in the stopping cell. The space charge decreases the extraction efficiency of stopping cells since the …

Nuclear and High Energy PhysicsEXTRACTIONFissionBuffer gasION-CATCHER01 natural sciencesSpace chargeIonHEAVY-IONSNuclear physicsMOBILITIESElectric fieldIonization0103 physical sciencesRate capabilityddc:530SPECTROMETER010306 general physicsNuclear ExperimentInstrumentationSUPER-FRSHIGH-PRECISION EXPERIMENTSta114010308 nuclear & particles physicsChemistryProjectileBEAMSPERFORMANCEGAS CELLSpace chargeExtraction efficiencyExtraction timeCryogenic gas-filled stopping cellAtomic physicsBeam (structure)Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms
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First spatial separation of a heavy ion isomeric beam with a multiple-reflection time-of-flight mass spectrometer

2015

Physics letters / B 744, 137 - 141 (2015). doi:10.1016/j.physletb.2015.03.047

Nuclear reactionNuclear and High Energy PhysicsISOBAR SEPARATIONPROJECTILESpatial isomer separationMass spectrometry530Ion211Po ionsPo-211 ionsCRYOGENIC STOPPING CELLPhysics::Atomic and Molecular ClustersIsomeric ratioFACILITYddc:530Physics::Chemical PhysicsSpectroscopyNuclear ExperimentFRAGMENTSPhysicsExcitation energyta114Multiple-reflection time-of-flight mass spectrometerPERFORMANCEIsotope separation in flightlcsh:QC1-999IsomerFRS-ESRTime of flightSTATESEXOTIC NUCLEIMass spectrumIsomeric beamAtomic physicsGround stateSYSTEMExcitationlcsh:Physics
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