Search Results - "Takamine, A"
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Offline ion source for laser spectroscopy of RI at the SLOWRI
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-01-2021)“…The ion source combining laser ablation of solid targets in helium gas and an RF ion guide system with an RF carpet was constructed for a reference measurement…”
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Demonstration of nuclear gamma-ray polarimetry based on a multi-layer CdTe Compton camera
Published in Scientific reports (09-02-2024)“…To detect and track structural changes in atomic nuclei, the systematic study of nuclear levels with firm spin-parity assignments is important. While linear…”
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First Direct Mass Measurements of Nuclides around Z=100 with a Multireflection Time-of-Flight Mass Spectrograph
Published in Physical review letters (13-04-2018)“…The masses of ^{246}Es, ^{251}Fm, and the transfermium nuclei ^{249-252}Md and ^{254}No, produced by hot- and cold-fusion reactions, in the vicinity of the…”
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The new MRTOF mass spectrograph following the ZeroDegree spectrometer at RIKEN’s RIBF facility
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-02-2023)“…A newly assembled multi-reflection time-of-flight mass spectrograph (MRTOF-MS) at RIKEN’s RIBF facility became operational for the first time in spring 2020;…”
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Study of the N=32 and N=34 Shell Gap for Ti and V by the First High-Precision Multireflection Time-of-Flight Mass Measurements at BigRIPS-SLOWRI
Published in Physical review letters (06-01-2023)“…The atomic masses of ^{55}Sc, ^{56,58}Ti, and ^{56-59}V have been determined using the high-precision multireflection time-of-flight technique. The…”
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A new multi-reflection time-of-flight mass spectrograph for the SLOWRI facility
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-01-2020)“…A new multi-reflection time-of-flight mass spectrograph for nuclear mass measurements with high precision has been constructed at the SLOWRI facility at…”
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Observation of doubly-charged ions of francium isotopes extracted from a gas cell
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-09-2017)“…Various isotopes of Ac, Ra, Fr, and Rn were produced by fusion-evaporation reactions using a 48Ca beam. The energetic ions were stopped in and extracted from a…”
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A novel ion cooling trap for multi-reflection time-of-flight mass spectrograph
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-12-2013)“…•Fast cooling time: 2ms.•High efficiency: ≈27% for 23Na+ and ≈5.1% for 7Li+.•100% Duty cycle with double trap system. A radiofrequency quadrupole ion trap…”
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A multi-reflection time-of-flight mass spectrograph for short-lived and super-heavy nuclei
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-12-2013)“…•Demonstrated very fast mass measurements with a multi-reflection time of flight mass spectrograph.•Mass resolving power of Rm≈150,000 was achieved in 1.2-ms…”
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Status of the low-energy super-heavy element facility at RIKEN
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-06-2016)“…In order to investigate nuclei produced via fusion–evaporation reactions, especially super-heavy elements (SHE), we have begun construction of a facility for…”
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Multi-reflection time-of-flight mass spectrograph for short-lived radioactive ions
Published in European physical journal. A, Hadrons and nuclei (Print) (01-12-2009)“…RIKEN’s new RI-Beam Factory (RIBF) will provide unprecedented access to neutron-rich nuclei of importance to r-process nucleosynthesis. We are constructing an…”
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Journal Article Conference Proceeding -
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Interplay between nuclear shell evolution and shape deformation revealed by the magnetic moment of 75Cu
Published in Nature physics (21-01-2019)“…Exotic nuclei are characterized by having a number of neutrons (or protons) in excess relative to stable nuclei. Their shell structure, which represents…”
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Towards high precision measurements of nuclear g-factors for the Be isotopes
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-06-2016)“…We describe the present status of future high-precision measurements of nuclear g-factors utilizing laser-microwave double and laser-microwave-rf triple…”
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An rf-carpet electrospray ion source to provide isobaric mass calibrants for trans-uranium elements
Published in International journal of mass spectrometry (01-03-2013)“…[Display omitted] ► A molecular ion source that provides mass calibrants for the multi-reflection time-of-flight mass spectrograph (MRTOF-MS). ► The MRTOF-MS…”
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Development of a resonant laser ionization gas cell for high-energy, short-lived nuclei
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (2013)“…A new laser ion source configuration based on resonant photoionization in a gas cell has been developed at RIBF RIKEN. This system is intended for the future…”
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Conceptual study on parasitic low-energy RI beam production with in-flight separator BigRIPS and the first stopping examination for high-energy RI beams in the parasitic gas cell
Published in Progress of theoretical and experimental physics (01-11-2019)“…Abstract An in-flight separator performs the important role of separating a single specific radioactive isotope (RI) beam from the thousands of RI beams…”
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Developments at the SLOWRI facility at RIKEN: precision optical spectroscopy of 7,9,10,11Be+ ions
Published in Hyperfine interactions (01-07-2011)“…Precision optical spectroscopy of radioactive Be isotopes produced in projectile fragmentation has been performed for the first time at the prototype SLOWRI…”
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Isotope shift measurements of 11, 9, 7Be
Published in European physical journal. A, Hadrons and nuclei (Print) (01-12-2009)“…We have performed precision atomic spectroscopy of trapped radioactive Be isotopes aiming at studies of the charge and magnetization radii of these nuclei…”
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Journal Article Conference Proceeding -
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Offline development for collinear laser spectroscopy at the SLOWRI facility
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-08-2023)“…Collinear laser spectroscopy on isotopic chains of refractory elements is under preparation at the SLOWRI facility in the radioactive isotope (RI) beam factory…”
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