0000000001024691

AUTHOR

H. Heggen

showing 5 related works from this author

Decay studies in the A∼225 Po-Fr region from the DESPEC campaign at GSI in 2021

2022

The HISPEC-DESPEC collaboration aims at investigating the struc-ture of exotic nuclei formed in fragmentation reactions with decay spectroscopymeasurements, as part of the FAIR Phase-0 campaign at GSI. This paper reportson first results of an experiment performed in spring 2021, with a focus on beta-decaystudies in the Po-Fr nuclei in the 220 < A <230 island of octupole deformationexploiting the DESPEC setup. Ion-beta correlations and fast-timing techniques arebeing employed, giving an insight into this difficult-to-reach region. peerReviewed

ydinfysiikka
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A GEM-TPC in twin configuration for the Super-FRS tracking of heavy ions at FAIR

2018

The GEM-TPC [1] described herein will be part of the standard beam-diagnostics equipment of the Super-FRS [2] . This chamber will provide tracking information for particle identification at rates up to 1 MHz on an event-by-event basis. The key requirements of operation for these chambers are: close to 100% tracking efficiency under conditions of high counting rate, spatial resolution below 1 mm and a superb large dynamic range covering projectiles from Z=1 up to Z=92. The current prototype consists of two GEM-TPCs inside a single vessel, which are operating independently and have electrical drift fields in opposite directions. The twin configuration is done by flipping one of the GEM-TPCs o…

radioactive ion beamNuclear and High Energy PhysicsProtonfragment separatorPhysics::Instrumentation and Detectorssuper-FRSchemistry.chemical_elementTracking (particle physics)01 natural sciences7. Clean energyParticle identificationGSIXenonOptics0103 physical sciencesseurantaNuclear Experiment010306 general physicsInstrumentationImage resolutionPhysicsTime projection chamberta114010308 nuclear & particles physicsProjectilebusiness.industrytrackingfairtime projection chamberbeam adjustmentchemistrygas electron multiplierGas electron multiplierbusinessNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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Twin GEM-TPC prototype (HGB4) beam test at GSI and Jyväskylä : a development for the Super-FRS at FAIR

2017

The FAIR[1] facility is an international accelerator centre for research with ion and antiproton beams. It is being built at Darmstadt, Germany as an extension to the current GSI research institute. One major part of the facility will be the Super-FRS[2] separator, which will be include in phase one of the project construction. The NUSTAR experiments will benefit from the Super-FRS, which will deliver an unprecedented range of radioactive ion beams (RIB). These experiments will use beams of different energies and characteristics in three different branches; the high-energy which utilizes the RIB at relativistic energies 300-1500 MeV/u as created in the production process, the low-energy bra…

Radioactive ion beamsPhysics - Instrumentation and DetectorsPhysics::Instrumentation and DetectorsSeparator (oil production)hiukkaskiihdyttimet01 natural sciences7. Clean energy114 Physical sciencesParticle identificationNuclear physics0103 physical sciencesElectronicsNuclear ExperimentdetectorsPhysicsta114010308 nuclear & particles physicsProjectileI.2.7Detectorparticle acceleratorsilmaisimetAntiprotonPhysics::Accelerator PhysicsF.2.2Beam (structure)
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Nature of seniority symmetry breaking in the semimagic nucleus $^{94}Ru$

2022

Physical review / C 105(3), L031304 (2022). doi:10.1103/PhysRevC.105.L031304

Nuclear Theoryddc:530Nuclear Experimentydinfysiikka530
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Fast-timing Measurement in \(^{96}\)Pd: Improved Accuracy for the Lifetime of the \(4_1^{+}\) State

2023

Direct lifetime measurements via γ–γ coincidences using the FATIMA fast-timing LaBr3(Ce) array were performed for the excited states below previously reported isomers. In the N = 50 semi-magic 96Pd nucleus, lifetimes below the I π = 8+ seniority isomer were addressed as a benchmark for further analysis. The results for the I π = 2+ and 4 + states confirm the published values. Increased accuracy for the lifetime value was achieved for the 4 + state. peerReviewed

General Physics and AstronomyydinfysiikkaActa Physica Polonica B Proceedings Supplement
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