A5103640351- Atomic and Subatomic Physics Research
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Frequency and Time Standards
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Quantum, superfluid, helium dynamics
- Superconducting Materials and Applications
- Advanced NMR Techniques and Applications
- Nuclear physics research studies
- Gamma-ray bursts and supernovae
- Magnetic confinement fusion research
- Astro and Planetary Science
- Radioactive Decay and Measurement Techniques
- Scientific Measurement and Uncertainty Evaluation
- Advanced X-ray and CT Imaging
- Electron and X-Ray Spectroscopy Techniques
- Particle Detector Development and Performance
- Astronomy and Astrophysical Research
- Planetary Science and Exploration
- Particle accelerators and beam dynamics
- Space Satellite Systems and Control
- Geophysics and Sensor Technology
- Cultural Heritage Materials Analysis
- Advanced Fiber Laser Technologies
- Radiation Detection and Scintillator Technologies
Shanghai Institute for Science of Science
2025
Institute of Science Tokyo
2025
Kanazawa University
2022-2024
Tokyo Institute of Technology
2015-2022
RIKEN Nishina Center
2017-2020
Osaka University
2017
University of Winnipeg
2017
High Energy Accelerator Research Organization
2017
Institute of Materials Structure Science
2017
Hosei University
2017
HiZ-GUNDAM is a future satellite mission whose concept was approved by ISAS/JAXA, and it one of the candidates JAXA's competitive medium-class mission. will lead time-domain astronomy in 2030s, its key sciences are (1) exploration early universe with high-redshift gamma-ray bursts, (2) contribution to multi-messenger astronomy. Two payloads aboard realize these two scientific issues. The wide field X-ray monitors which consist Lobster Eye optics array focal imaging sensor, monitor ~0.5...
HiZ-GUNDAM is a future satellite mission for gamma-ray burst observations. One of the instruments wide-field X-ray monitor with field view (FoV) 0.5 steradian at 0.4 to 4.0 keV, consisting Lobster Eye Optics (LEO) and focal-imaging pixel sensors. LEOs need be spatially well-aligned achieve both wide FoV fine accuracy in determining location transients. An alignment method being investigated visible light shape measurements. We developed titanium frame positioning two LEO segments estimated...
For the measurement of electron electric dipole moment using Fr atoms, a ion-atom conversion is one most critical process. An converter based on “orthotropic” type source has been developed. This able to convert few keV ion beam thermal atomic cycle surface ionization and neutralization. In this article, development reported.
We report on a new in situ laser spectroscopy technique using superfluid helium and highly energetic ion beam. In taking advantage of as host matrix for spectroscopy, we were able to develop an extremely low background detection system. The first demonstration 85Rb31+ beam (66 MeV/nucleon) accelerated at the RIKEN accelerator facility shows improvement limit by two orders magnitude. A quantitative evaluation Rb atoms observation region enables analysis their optical absorption cross-section...
Gepulstes Neutronen-Transmissions-Imaging ist eine einzigartige Methode, die ortsaufgeloste Information zu physikalischen Eigenschaften von Materialien geben kann, wie z. B. kristallographische Charakteristika, Elemente, magnetische Felder usw. Diese Daten erhalt man, indem Transmissionsspektren in Abhangigkeit der Neutronenwellenlange jedem Pixel eines zweidimensional ortsauflosenden Detektors untersucht werden. Wir haben diese Methode auf Proben des kulturellen Erbes angewandt und zwar...
An active nuclear spin maser, which enables a precision measurement of precession frequency, is employed in the experimental search for permanent electric dipole moment (EDM) diamagnetic atom 129 Xe.In order to eliminate systematic errors limit sensitivity experiment an EDM, following tactics are adopted: (i) 3 He comagnetometry cancellation long-term drifts external magnetic fields and (ii) double-cell geometry mitigation frequency shifts due interaction Xe with polarized Rb atoms.In...
Comagnetometers play a key role in EDM experiments.They allow one to quantify, and subsequently correct for, any long-term drifts of the external magnetic field.In order improve performance 3 He comagnetometer for our 129 Xe measurements, we have decided incorporate double-cell geometry which enables us suppress frequency shift due contact interaction with polarized Rb atoms.In this study, production relaxation spin polarization double cell were studied.As result, followings achieved:...
Co-magnetometry enables the elimination of systematic errors arising from long-term drift in magnetic field, and is essential for a precision measurement spin precession frequency experiments searching electric dipole moment (EDM). $^{131}$Xe nuclear maser shows great promise as co-magnetometer Xe EDM experiment, because error originating Xe-Rb interaction, which virtually limits sensitivity case $^3$He co-magnetometer, will be cancelled out. The performance cell contains both $^{129}$Xe was...
We have developed a unique neutralizer device that uses an yttrium target surrounded by platinum wall to magneto-optically trap radioactive atoms. In general, the nucleus produced in nuclear reaction is extracted and transported ion form. For magneto-optical trap, thermal neutralization must occur on surface of metal with small work function. The converter can produce neutral atomic beam angular divergence that, given recycling atoms ions, converts ions into remarkable efficiency....
The magnetic moment of the isomeric state neutron-rich ^75Cu nucleus was measured using a highly spin-aligned beam produced via two-step reaction scheme. In experiment carried out at BigRIPS RIBF, we achieved to produce spin alignment reaching 30% by employing one-proton removal from ^76Zn ^75Cu. measurement, method time-differential perturbed angular distribution (TDPAD) employed. Precession with parity 3/2^− clearly observed significance larger than 5σ in TDPAD spectrum. determined be μ =...
Ultra-short optical pulses synchronized to an electrical clock are required in ultra-high bit rate soliton transmission and signal processing systems. Use of sinusoidally-driven electroabsorption (EA) modulators is described generate transform-limited pulses. We model pulse generation lumped-electorode EA modulators, defining a new device figure merit. Generated width calculated as function extinction ratio slope for applied voltages 3dB bandwidth sample length, results compared with those...
A projection X-ray microscope useful for industrial non-destructive inspections and various biological observations has been developed. By installing a Schottky type electron source, nano focus source with 100 nm focal spot size that is easy to handle in laboratories successfully achieved at 20 80 kVp. An imaging system composed of vertical can adjust sample position on the optical axis, high-resolution be by using high precision stage unit. test chart 200 line width clearly confirmed...