73 citations · 272 across the 15 of their papers we have counts for
15 papers
Anomalous nuclear effects on ion charge state distribution in helium gas
Sota Kimura, Michiharu Wada, Hiromitsu Haba +4
The influence of isotope differences on ion charge state yield ratios has never been studied in detail, having been considered negligible. However, we have observed anomalous ion c…
Comprehensive mass measurement study of Cf fission fragments with MRTOF-MS and detailed study of masses of neutron-rich Ce isotopes
Sota Kimura, Michiharu Wada, Hiromitsu Haba +7
We report the mass measurements of neutron-rich isotopes produced via spontaneous fission of Cf using a multi-reflection time-of-flight mass spectrograph. The mass of ${}…
Design report of the KISS-II facility for exploring the origin of uranium
Takamichi Aoki, Yoshikazu Hirayama, Hironobu Ishiyama +14
One of the critical longstanding issues in nuclear physics is the origin of the heavy elements such as platinum and uranium. The r-process hypothesis is generally supported as the…
A new study of the and shell gap for Ti and V by the first high-precision MRTOF mass measurements at BigRIPS-SLOWRI
S. Iimura, M. Rosenbusch, A. Takamine +34
The atomic masses of Sc, Ti, and V have been determined using the high-precision multi-reflection time-of-flight technique. The radioisotopes have been p…
The new MRTOF mass spectrograph following the ZeroDegree spectrometer at RIKEN's RIBF facility
M. Rosenbusch, M. Wada, S. Chen +23
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; further modifications…
First direct observation of isomeric decay in neutron-rich odd-odd Ta
Y. X. Watanabe, P. M. Walker, Y. Hirayama +19
De-excitation rays associated with an isomeric state of Ta were investigated. The isomers were produced in multinucleon transfer reactions between a Xe beam and…
Alpha-decay-correlated mass measurement of 206,207Ra using an -TOF detector equipped MRTOF-MS system
T. Niwase, M. Wada, P Schury +25
The atomic masses of the isotopes Ra have been measured via decay-correlated mass spectroscopy using a multi-reflection time-of-flight mass spectrograph equipped with a…
Reduction of contaminants originating from primary beam by improving the beam stoppers in GARIS-II
Sota Kimura, Daiya Kaji, Yuta Ito +4
Two independent beam stoppers have been developed for improving the beam separation of the gas-filled recoil ion separator GARIS-II. Performance evaluation of these supplemental be…
First high-precision direct determination of the atomic mass of a superheavy nuclide
P. Schury, T. Niwase, M. Wada +25
We present the first direct measurement of the atomic mass of a superheavy nuclide. Atoms of Db (=105) were produced online at the RIKEN Nishina Center for Accelerator-B…
Development of an "-ToF" detector for correlated measurement of atomic masses and decay properties
T. Niwase, M. Wada, P. Schury +12
We have developed a novel detector, referred to as an "-ToF detector", for correlated measurements of atomic masses and decay properties of low-yield, short-lived radioactive is…
New mass anchor points for neutron-deficient heavy nuclei from direct mass measurements of radium and actinium isotopes
M. Rosenbusch, Y. Ito, P. Schury +17
The masses of the exotic isotopes Ac and Ra have been measured with a multi-reflection time-of-flight mass spectrograph. These isotopes were obtained in fli…
First direct mass measurements of nuclides around with a Multireflection Time-of-Flight Mass Spectrograph
Y. Ito, P. Schury, M. Wada +23
The masses of Es, Fm and the transfermium nuclei Md, and No, produced by hot- and cold-fusion reactions, in the vicinity of the deformed …
Atomic masses of intermediate-mass neutron-deficient nuclei with relative uncertainty down to 35-ppb via multireflection time-of-flight mass spectrograph
S. Kimura, Y. Ito, D. Kaji +18
High-precision mass measurements of Cu, Zn, Ga, Ge, As, Br, Rb, and Sr were performed utilizing a multireflection t…
In-gas-cell laser spectroscopy for magnetic dipole moment of Pt toward 126
Y. Hirayama, M. Mukai, Y. X. Watanabe +10
Magnetic dipole moment and mean-square charge radius of Pt ( 5/2) have been evaluated for the first time from the investigation of the hyperfine splitting of the…
First Online Mass Measurements of Isobar Chains via Multi-Reflection Time-of-Flight Mass Spectrograph Coupled with GARIS-II
P. Schury, M. Wada, Y. Ito +16
Using a mulit-reflection time-of-flight mass spectrograph (MRTOF-MS) located after a gas cell coupled with the gas-filled recoil ion separator GARIS-II, the masses of several heavy…