A5052779986- Nuclear physics research studies
- Atomic and Molecular Physics
- Quantum Chromodynamics and Particle Interactions
- Astronomical and nuclear sciences
- Nuclear Physics and Applications
- Quantum, superfluid, helium dynamics
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Chemical Physics Studies
- Atomic and Subatomic Physics Research
- Advanced NMR Techniques and Applications
- Astro and Planetary Science
- Particle physics theoretical and experimental studies
- Nuclear reactor physics and engineering
- Scientific Research and Discoveries
- Neutrino Physics Research
- High-pressure geophysics and materials
- High-Energy Particle Collisions Research
- Particle accelerators and beam dynamics
- Pulsars and Gravitational Waves Research
- Rare-earth and actinide compounds
- Superconducting Materials and Applications
- Random Matrices and Applications
- X-ray Diffraction in Crystallography
- Radiation Therapy and Dosimetry
- Geophysics and Gravity Measurements
Hokkaido University
2016-2025
Osaka Metropolitan University
2022-2025
RIKEN Nishina Center
2011-2025
Tokyo Metropolitan University
2022-2024
National Institute of Technology, Gifu College
2024
National Institute of Technology, Kagoshima College
2024
Osaka City University
2023
Goethe University Frankfurt
2020
Kōchi University
2020
Kitami Institute of Technology
2020
The variational method complemented with the use of explicitly correlated Gaussian basis functions is one most powerful approaches currently used for calculating properties few-body systems. Despite its conceptual simplicity, offers great flexibility, high accuracy, and can be to study diverse quantum systems, ranging from small atoms molecules light nuclei, hadrons, dots, Efimov basic theoretical foundations are discussed, recent advances in applications Gaussians physics chemistry...
We systematically study total reaction cross sections of carbon isotopes with $N=6\text{\ensuremath{-}}16$ on a proton target for wide range incident energies. An emphasis is put the difference from case target. The calculations include $^{19,20,22}\mathrm{C}$ at $40A$ MeV, data which have recently been measured RIKEN. Glauber theory used to calculate sections. To describe intrinsic structure isotopes, we use Slater determinant generated phenomenological mean-field potential, and construct...
Proton radii of ^{12-19}C densities derived from first accurate charge changing cross section measurements at 900A MeV with a carbon target are reported. A thick neutron surface evolves ∼0.5 fm in ^{15}C to ∼1 ^{19}C. The halo radius ^{19}C is found be 6.4±0.7 as large ^{11}Li. Ab initio calculations based on chiral nucleon-nucleon and three-nucleon forces reproduce the well.
We report the measurement of reaction cross sections (${\ensuremath{\sigma}}_{R}^{\mathrm{ex}}$) $^{27,29}\mathrm{F}$ with a carbon target at RIKEN. The unexpectedly large ${\ensuremath{\sigma}}_{R}^{\mathrm{ex}}$ and derived matter radius identify $^{29}\mathrm{F}$ as heaviest two-neutron Borromean halo to date. is attributed neutrons occupying $2{p}_{3/2}$ orbital, thereby vanishing shell closure associated neutron number $N=20$. results are explained by state-of-the-art model...
We systematically analyze total reaction cross sections of carbon isotopes with $N=$ 6--16 on a $^{12}\mathrm{C}$ target for wide range incident energy. The intrinsic structure the isotope is described by Slater determinant generated from phenomenological mean-field potential, which reasonably well reproduces ground-state properties most even $N$ isotopes. need separate studies not only odd nuclei but also $^{16}\mathrm{C}$ and $^{22}\mathrm{C}$ to improve their wave functions. density...
A dripline nucleus $^{22}$C is studied in a Borromean three-body model of $^{20}$C+$n$+$n$. The valence neutrons, interacting via realistic potential, are constrained to be orthogonal the occupied orbits $^{20}$C. We obtain ample results supporting that an ideal $S$-wave two-neutron halo nucleus: ground state bound by 390-570 keV, root mean square neutron and proton radii 4.0 2.4 fm, two neutrons predominantly $(s_{1/2})^2$ orbits. binding mechanism discussed. One- two-body density...
A candidate of a neutron-halo nucleus, $^{31}$Ne, contains single neutron in the $pf$ shell. Within Glauber and eikonal models, we analyze reactions used to study $^{31}$Ne. We show $^{30}$Ne+n model that magnitudes total reaction above all one-neutron removal cross sections $^{31}$Ne on $^{12}$C $^{208}$Pb targets strongly depend orbital angular momentum neutron, thereby providing us with efficient ways determine both spin-parity structure ground state Besides these inclusive observables,...
The 3He(α,γ)7Be and 3H(α,γ)7Li astrophysical S factors are calculated within the no-core shell model with continuum using a renormalized chiral nucleon–nucleon interaction. agree reasonably well experimental data while ones overestimated. seven-nucleon bound resonance states α + 3He/3H elastic scattering also studied compared experiment. low-lying properties rather reproduced by our approach. At low energies, s-wave phase shift, which is non-resonant,
The first determination of radii point proton distribution (proton radii) 12–17B from charge-changing cross sections (σCC) measurements at the FRS, GSI, Darmstadt is reported. are deduced a finite-range Glauber model analysis σCC. show an increase 13B to 17B and consistent with predictions antisymmetrized molecular dynamics for neutron-rich nuclei. existence thick neutron surface neutron-proton radius difference 0.51(0.11) fm in 17B.Received 11 May...
A systematic analysis is made on the total reaction cross sections for Ne, Mg, Si, and S isotopes. The high-energy nucleus-nucleus collision described based Glauber model. Using Skyrme-Hartree-Fock method in three-dimensional grid-space representation, we determine nuclear density distribution a wide range of nuclei self-consistently without assuming any spatial symmetry. calculated consistently agree with recent section data Ne${+}^{12}$C at 240 $A$MeV, which makes it possible to discuss...
Short-range correlations between nucleon pairs in different spin-isospin channels are investigated for light nuclei using the Argonne V8' interaction. At distances below 1 fm a universal behavior is found deuteron, 3H, 3He and ground first excited states 4He. This coordinate space reflected by high-momentum components momentum space. The universality indicates that pairwise renormalization possible order to obtain effective two-body interaction does not scatter high states. exact densities...
Interaction cross sections for ^{42-51}Ca on a carbon target at 280 MeV/nucleon have been measured the first time. The neutron number dependence of derived root-mean-square matter radii shows significant increase beyond magic N=28. Furthermore, this enhancement is much larger than that previously charge radii, indicating novel growth in skin thickness. A simple examination based Fermi-type distribution, and mean field calculations point out anomalous nuclear size N=28 results from an...
New measurements of the interaction cross sections 22,23O at 900A MeV performed GSI, Darmstadt are reported that address unsolved puzzle large section previously observed for 23O. The matter radii these oxygen isotopes extracted through a Glauber model analysis in good agreement with new predictions ab initio coupled-cluster theory here. They consistent 22O+neutron description 23O as well.
$\mathbf{Background:}$ Realistic nucleon-nucleon interactions induce short-range correlations in nuclei. To solve the many-body problem unitary transformations like similarity renormalization group (SRG) are often used to soften interactions. $\mathbf{Purpose:}$ Two-body densities can be illustrate how SRG eliminates wave function. The information however recovered by transforming density operators. $\mathbf{Method:}$ is solved for $^4$He no core shell model (NCSM) with transformed AV8' and...
Differential cross sections of isoscalar and isovector spin-M1 (0(+)→1(+)) transitions are measured using high-energy-resolution proton inelastic scattering at E(p)=295 MeV on (24)Mg, (28)Si, (32)S, (36)Ar 0°-14°. The squared nuclear transition matrix elements deduced from the differential by applying empirically determined unit based assumption isospin symmetry. ratios accumulated up to E(x)=16 compared a shell-model prediction 1.01(9) for 0.61(6) transitions, respectively. Thus, no...
The root mean square radii of the proton density distribution in ^{16-24}O derived from measurements charge changing cross sections with a carbon target at ∼900A MeV together matter portray thick neutron skin for ^{22-24}O despite ^{22,24}O being doubly magic. Imprints shell closures N=14 and 16 are reflected local minima their that provide evidence tensor interaction causing them. agree ab initio calculations employing chiral NNLO_{sat} interaction, though thickness predictions challenged....
We show that the strong spin-triplet neutron-proton interaction causes polaronic protons to occur in neutron matter at subnuclear densities and nonzero temperatures. As density increases, proton spectra exhibit a smooth crossover from bare impurity repulsive polaron branch; this branch coexists with an attractive branch. With increased further, polarons become stable respect deuteron formation. For two adjacent protons, we find effects neutron-mediated attraction are sufficient induce bound...
Background: Saturation of nuclear density is a fundamental property atomic nuclei but in reality, the internal distribution not uniform, e.g., some are known to have so-called bubble structure, which central depressed. Purpose: We aim unveil emergent mechanism nonuniformity nucleon distributions for whole mass regions, generalizing typical structure. Method: systematically investigate using Skyrme Hartree-Fock plus Bardeen-Cooper-Schrieffer calculation represented three-dimensional Cartesian...
We present a new global optical potential (GOP) for nucleus-nucleus systems, including neutron-rich and proton-rich isotopes, in the energy range of $50 \sim 400$ MeV/u. The GOP is derived from microscopic folding model with complex $G$-matrix interaction CEG07 density presented by S{\~ a}o Paulo group. well accounts realistic potentials systems reproduces existing elastic scattering data stable heavy-ion projectiles at incident energies above 50 then calculate folding-model (FMPs) even-even...
There are some discrepancies in the low-energy data on photoabsorption cross section of ${}^{4}$He. We calculate with realistic nuclear forces and explicitly correlated Gaussian functions. Final-state interactions two- three-body decay channels taken into account. The is evaluated using two methods: With complex scaling method total absorption obtained up to rest energy a pion, microscopic $R$-matrix sections for both ${}^{4}$He($\ensuremath{\gamma},p$)${}^{3}$H...
The interaction cross sections of 32−35Mg at 900A MeV have been measurmed using the fragment separator GSI. deviation from r0A1/3 trend is slightly larger for 35Mg, signaling possible formation a longer tail in neutron distribution 35Mg. radii extracted Glauber model analysis with Fermi densities are consistent models predicting development skins.Received 19 November 2010DOI:https://doi.org/10.1103/PhysRevC.83.021302© 2011 American Physical Society