Search Results - "Michimasa, S"
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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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First Application of Mass Measurements with the Rare-RI Ring Reveals the Solar r-Process Abundance Trend at A=122 and A=123
Published in Physical review letters (15-04-2022)“…The Rare-RI Ring (R3) is a recently commissioned cyclotronlike storage ring mass spectrometer dedicated to mass measurements of exotic nuclei far from…”
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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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Neutron capture reaction cross-section of 79Se through the 79Se(d,p) reaction in inverse kinematics
Published in Physics letters. B (01-03-2024)“…γ emission probabilities from unbound states in 78,80Se, populated by a neutron-transfer reaction (d,p) on 77,79Se nuclei in inverse kinematics, were measured…”
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Isomer decay spectroscopy of 164Sm and 166Gd: midshell collectivity around N=100
Published in Physical review letters (31-12-2014)“…Excited states in the N=102 isotones 166Gd and 164Sm have been observed following isomeric decay for the first time at RIBF, RIKEN. The half-lives of the…”
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Separated flow operation of the SHARAQ spectrometer for in-flight proton-decay experiments
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (11-09-2016)“…A new “separated flow” operating mode has been developed for in-flight proton-decay experiments using the SHARAQ spectrometer. In this mode, the protons and…”
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How Different is the Core of ^{25}F from ^{24}O_{g.s.} ?
Published in Physical review letters (29-05-2020)“…The structure of a neutron-rich F25 nucleus is investigated by a quasifree (p,2p) knockout reaction at 270A MeV in inverse kinematics. The sum of…”
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Development of CVD diamond detector for time-of-flight measurements
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-12-2013)“…•Report on recent development of the polycrystalline CVD diamond detector.•Thin detector with extremely good timing resolution for time-of-flight…”
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Low-energy radioisotope beam separator CRIB
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (21-02-2005)“…A low-energy in-flight type RI beam separator, called CRIB, has been installed for nuclear physics and nuclear astrophysics by the Center for Nuclear Study,…”
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10
Mapping of a New Deformation Region around 62Ti
Published in Physical review letters (18-09-2020)“…We performed the first direct mass measurements of neutron-rich scandium, titanium, and vanadium isotopes around the neutron number 40 at the RIKEN RI Beam…”
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First test experiment to produce the slowed-down RI beam with the momentum-compression mode at RIBF
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-06-2016)“…The 82Ge beam has been produced by the in-flight fission reaction of the 238U primary beam with 345MeV/u at the RIKEN RI beam factory, and slowed down to about…”
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Development of low-pressure multi-wire drift chambers for high-resolution spectroscopy with radioactive isotope beams
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-12-2013)“…•Multi-wire drift chambers were developed for high intensity beams of 1MHz.•Low-pressure gas is used to minimize the effect of multiple scattering.•Tracking…”
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Inverse kinematics (p,n) reactions studies using the WINDS slow neutron detector and the SAMURAI spectrometer
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-06-2016)“…We have combined the low-energy neutron detector WINDS (Wide-angle Inverse-kinematics Neutron Detectors for SHARAQ) and the SAMURAI spectrometer at RIKEN…”
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14
Observation of isoscalar and isovector dipole excitations in neutron-rich 20 O
Published in Physics letters. B (10-05-2017)Get full text
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Evidence for a new nuclear ‘magic number’ from the level structure of 54Ca
Published in Nature (London) (10-10-2013)“…A spectroscopic study highlights the ‘doubly magic’ nature of 54 Ca and provides direct experimental evidence for the onset of a sizable subshell closure at…”
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Magic Nature of Neutrons in ^sup 54^Ca: First Mass Measurements of ^sup 55–57^Ca
Published in Physical review letters (13-07-2018)“…We perform the first direct mass measurements of neutron-rich calcium isotopes beyond neutron number 34 at the RIKEN Radioactive Isotope Beam Factory by using…”
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SHARAQ spectrometer for high-resolution studies for RI-induced reactions
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-12-2013)“…•Report on recent achievement of the SHARAQ spectrometer.•Demonstration of two ion optics modes for high-resolution spectroscopy.•Discussion on measured…”
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New low-energy RIB separator CRIB for nuclear astrophysics
Published in The European physical journal. A, Hadrons and nuclei (01-01-2002)Get full text
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BigRIPS as a high resolution spectrometer for pionic atoms
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-12-2013)“…We are presently working on a new project ‘pionic atom factory project’ at RIBF. The project aims at precision spectroscopy of the energy spectrum of the…”
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Beta-gamma spectroscopy of the neutron-rich 150Ba
Published in Progress of theoretical and experimental physics (01-04-2018)“…Abstract Excited states in the neutron-rich nucleus $^{150}$Ba have been observed via ${\rm \beta}$–${\rm \gamma}$ spectroscopy at the Radioactive Isotope Beam…”
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