Search Results - "Plass, W R"
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1
Direct mass measurements above uranium bridge the gap to the island of stability
Published in Nature (London) (11-02-2010)“…The mass of an atom incorporates all its constituents and their interactions. The difference between the mass of an atom and the sum of its building blocks…”
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2
Direct Mapping of Nuclear Shell Effects in the Heaviest Elements
Published in Science (American Association for the Advancement of Science) (07-09-2012)“…Quantum-mechanical shell effects are expected to strongly enhance nuclear binding on an "island of stability" of superheavy elements. The predicted center at…”
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3
Discovery and investigation of heavy neutron-rich isotopes with time-resolved Schottky spectrometry in the element range from thallium to actinium
Published in Physics letters. B (09-08-2010)“…238U projectile fragments have been created at the entrance of the fragment separator FRS, spatially separated in flight within 0.45 μs and injected into the…”
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4
New stopping cell capabilities: RF carpet performance at high gas density and cryogenic operation
Published in Europhysics letters (01-12-2011)“…We have developed a stopping cell to be used at the FRS and Super-FRS (Super-conducting FRagment Separator) at the GSI Helmholtz Centre for Heavy-Ion Research…”
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5
NG-TRAP: Measuring neutron capture cross-sections of short-lived fission fragments
Published in EPJ Web of Conferences (01-01-2022)“…We lack significant nuclear physics input to understand the rapid-neutron capture (r-)process fully. The r-process is the source of half the elements heavier…”
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Journal Article Conference Proceeding -
6
Discovery of highly excited long-lived isomers in neutron-rich hafnium and tantalum isotopes through direct mass measurements
Published in Physical review letters (22-10-2010)“…A study of cooled ¹⁹⁷Au projectile-fragmentation products has been performed with a storage ring. This has enabled metastable nuclear excitations with energies…”
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7
Mass measurements of very neutron-deficient Mo and Tc isotopes and their impact on rp process nucleosynthesis
Published in Physical review letters (25-03-2011)“…The masses of ten proton-rich nuclides, including the N=Z+1 nuclides ⁸⁵Mo and ⁸⁷Tc, were measured with the Penning trap mass spectrometer SHIPTRAP. Compared to…”
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Penning trap mass measurements on nobelium isotopes
Published in Physical review. C, Nuclear physics (17-06-2010)“…The Penning trap mass spectrometer SHIPTRAP at GSI Darmstadt allows accurate mass measurements of radionuclides, produced in fusion-evaporation reactions and…”
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9
Design of a new time-of-flight detector for isochronous mass spectrometry in the collector ring at FAIR
Published in Physica scripta (01-11-2015)“…The masses of exotic nuclei can be measured in ion storage rings by determination of their revolution time in the ring. At the current FRS-Experimental Storage…”
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10
Towards direct mass measurements of nobelium at SHIPTRAP
Published in The European Physical Journal D : Atomic, molecular, optical and plasma physics (01-10-2007)“…The Penning-trap mass spectrometer SHIPTRAP allows precision mass measurements of rare isotopes produced in fusion-evaporation reactions. In the first period…”
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Journal Article Conference Proceeding -
11
A high-performance multiple-reflection time-of-flight mass spectrometer and isobar separator for the research with exotic nuclei
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (21-03-2015)“…A novel multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) and isobar separator for the research with exotic nuclides at low-energy rare isotope…”
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12
First Penning trap mass measurements beyond the proton drip line
Published in Physical review letters (11-01-2008)“…The masses of six neutron-deficient rare holmium and thulium isotopes close to the proton drip line were determined with the SHIPTRAP Penning trap mass…”
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Commissioning and performance of TITAN’s Multiple-Reflection Time-of-Flight Mass-Spectrometer and isobar separator
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-12-2021)“…TRIUMF’s Ion Trap for Atomic and Nuclear science (TITAN) has specialized in fast Penning Trap mass spectrometry of very short-lived radioactive isotopes. The…”
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14
Recent Upgrades of the Gas Handling System for the Cryogenic Stopping Cell of the FRS Ion Catcher
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-10-2023)“…In this paper, the major upgrades and technical improvements of the buffer gas handling system for the cryogenic stopping cell of the FRS Ion Catcher at…”
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15
Novel isochronous features for FRS-ESR experiments with stored exotic projectile fragments
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-08-2023)“…High-resolution experiments with stored and cooled exotic nuclei have been pioneered and applied with the FRS-ESR facilities at GSI since 1991. Exotic nuclei…”
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The slow control system of the FRS Ion Catcher
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-07-2022)“…The FRS Ion Catcher setup at GSI is used for high precision measurements of slowed down exotic nuclei. The current setup consists of a gas-filled stopping…”
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Hyper-EMG: A new probability distribution function composed of Exponentially Modified Gaussian distributions to analyze asymmetric peak shapes in high-resolution time-of-flight mass spectrometry
Published in International journal of mass spectrometry (01-10-2017)“…[Display omitted] •A new versatile probability distribution function called “hyper-EMG” is presented.•Modeling of asymmetric MR-TOF mass spectra using the…”
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The ELI-NP IGISOL radioactive ion beam facility
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-12-2019)“…The Extreme Light Infrastructure – Nuclear Physics (ELI-NP) laboratory in Bucharest, Romania, will host an IGISOL-type facility which will study exotic…”
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In-cell multi-nucleon transfer reactions at the FRS Ion Catcher
Published in Physica scripta (01-07-2024)“…Abstract An exploratory program to establish the multi-nucleon transfer (MNT) reaction as a new research direction at the FRS Ion Catcher (FRS-IC) has started…”
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20
Ion-optical developments tailored for experiments with the Super-FRS at FAIR
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-03-2021)“…The future Super-FRS separator-spectrometer at FAIR will provide rare-isotope beams for key experiments in nuclear structure, astrophysics and nuclear…”
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