20 Result(s)
within
M. NISHIMURA
Physics
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Article
Injection of high energetic ion beams to superfluid helium as a host matrix of laser spectroscopic study of radioisotope atoms
We are develo** a laser spectroscopic method to study the nuclear structure of radioactive isotopes utilizing superfluid helium (He II) as an efficient stopper for highly energetic ion beams and as an in-sit...
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Article
Space weathering record and pristine state of Ryugu samples from MicrOmega spectral analysis
The samples returned from asteroid Ryugu were collected both at its surface and at its subsurface by Hayabusa2 and can, thus, provide information on the space weathering of C-type asteroids at different depths...
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Article
Constraints on Solar System early evolution by MicrOmega analysis of Ryugu carbonates
The samples returned from a C-type asteroid (Ryugu) by the Hayabusa2 mission constitute unprecedented access to carbonaceous material never exposed to Earth’s atmosphere that may still contain phases formed in...
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Article
Silicon tracker array for RIB experiments at SAMURAI
This work describes a silicon tracker system developed for experiments with proton-rich radioactive ion beams at the SAMURAI superconducting spectrometer of RIBF at RIKEN. The system is designed for accurate a...
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Article
First compositional analysis of Ryugu samples by the MicrOmega hyperspectral microscope
The characterization of objects that have best preserved the mineralogical and molecular phases formed in the earliest stages of the Solar System evolution is key to understanding the processes that led to the...
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Article
Open AccessSearch for lepton flavour violating muon decay mediated by a new light particle in the MEG experiment
We present the first direct search for lepton flavour violating muon decay mediated by a new light particle X, $$\upmu ^+ \rightarrow \mathrm ...
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Article
Open AccessEnhancement of element production by incomplete fusion reaction with weakly bound deuteron
Searching for effective pathways for the production of proton-rich and neutron-rich isotopes is one of the main driving forces behind experimental and theoretical nuclear reaction studies as well as for practi...
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Article
Open AccessThe design of the MEG II experiment
The MEG experiment, designed to search for the \({\mu ^+ \rightarrow \hbox {e}^+ \gamma }\) ...
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Chapter and Conference Paper
Results from Pilot Run for MEG II Positron Timing Counter
The MEG II experiment at Paul Scherrer Institut in Switzerland will search for the lepton flavour violating muon decay, $$\mu ^+\right...
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Article
Production of medical 99m Tc isotope via photonuclear reaction
99m Tc with a 6 hour half-life is one of the most important medical isotopes used for the Single-Photon Emission Computed Tomography (SPECT) inspec...
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Article
Open AccessSearch for the lepton flavour violating decay \(\mu ^+ \rightarrow \mathrm {e}^+ \gamma \) with the full dataset of the MEG experiment
The final results of the search for the lepton flavour violating decay $$\mathrm {\mu }^+ \rightarrow \mathrm {e}^+ \mathrm {\gamma }$...
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Article
Open AccessMuon polarization in the MEG experiment: predictions and measurements
The MEG experiment makes use of one of the world’s most intense low energy muon beams, in order to search for the lepton flavour violating process ...
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Article
Open AccessMeasurement of the radiative decay of polarized muons in the MEG experiment
We studied the radiative muon decay \({\upmu }^{+} \rightarrow \mathrm {e}^{+} {\upnu }\bar{{\upnu }}{\upgamma }\) ...
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Article
Open AccessA study of the proton resonant property in 22Mg by elastic scattering of 21Na + p and its astrophysical implication in the 18Ne(α, p)21Na reaction rate
Proton resonances in 22Mg have been investigated by the resonant elastic scattering of 21 Na + p . The 21Na beam with a mean energy of 4.00 MeV/nucleon was separated by the CNS radioactive...
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Article
Nuclear astrophysics at the east drip line
In the first half of the paper, the nuclear astrophysics activities in Japan, especially in experimental studies are briefly overviewed. A variety of beams have been developed and used for nuclear astrophysics...
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Article
Anomalous Magnetic-Field-Hysteresis of Quantum Oscillations in κ-(BETS)2FeBr4
Shubnikov-de Haas (SdH) oscillations are measured in the organic conductor, κ-(BETS)2FeBr4. In the canted antiferromagnetic (CAF) phase (μ0 H < μ0 H ...
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Article
Anomalous magnetic-field-hysteresis of quantum oscillations in κ-(BETS)2FeBr4
Shubnikov-de Haas (SdH) oscillations are measured in the organic conductor, κ-(BETS)2FeBr4. In the canted antiferromagnetic (CAF) phase (μ0H<μ0Hc=5.2 T), hysteresis is clearly observed in both the background resi...
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Chapter and Conference Paper
Nuclear astrophysics at the east drip line
In the first half of the paper, the nuclear astrophysics activities in Japan, especially in experimental studies are briefly overviewed. A variety of beams have been developed and used for nuclear astrophysics...
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Article
Structures and electronic states of photoexcited states in a system of two nitroxide radicals linked to fullerene studied by two-dimensional pulsed nutation and time-resolved electron paramagnetic resonance spectroscopy
Magnetic properties of fulleropyrrolidine adducts with two stable nitroxide radicals (2,2,6,6-tetramethylpiperidine-1-oxyl, TEMPO) were studied in toluene solution by continuous-wave time-resolved (TR) and pul...
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Chapter and Conference Paper
A New Argon Laser System with Kaleidoscanner and its Clinical Applications
During conventional argon laser therapy for removal of port wine stains, it is extremely difficult to manipulate the handpiece evenly and operator fatigue during irradiations is not uncommon. We have developed...
