A5061301378- Nuclear physics research studies
- Quantum Chromodynamics and Particle Interactions
- Nuclear Physics and Applications
- Advanced NMR Techniques and Applications
- Atomic and Molecular Physics
- Advanced Chemical Physics Studies
- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Nuclear reactor physics and engineering
- Astronomical and nuclear sciences
- Superconducting Materials and Applications
- Quantum, superfluid, helium dynamics
- High-Energy Particle Collisions Research
- Particle accelerators and beam dynamics
- X-ray Spectroscopy and Fluorescence Analysis
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Cold Atom Physics and Bose-Einstein Condensates
- Radiopharmaceutical Chemistry and Applications
- Advanced Frequency and Time Standards
- Neutrino Physics Research
- High-pressure geophysics and materials
- Radiation Therapy and Dosimetry
- Solar and Space Plasma Dynamics
- Electron and X-Ray Spectroscopy Techniques
Kyushu University
2016-2025
RIKEN Nishina Center
2016-2024
Institute of Particle Physics
2004-2017
Tohoku University
2009-2016
Osaka University
2001-2015
University of Notre Dame
2009-2012
University of the Witwatersrand
2009-2010
The University of Tokyo
1993-2010
University of Groningen
2010
Joint Institute for Nuclear Astrophysics
2009-2010
Precise measurements of deuteron vector and tensor analyzing powers ${A}_{y}^{d},$ ${A}_{\mathrm{xx}},$ ${A}_{\mathrm{yy}},$ ${A}_{\mathrm{xz}}$ in $d\ensuremath{-}p$ elastic scattering were performed via ${}^{1}\mathrm{H}(\stackrel{\ensuremath{\rightarrow}}{d},d)p$ ${}^{1}\mathrm{H}(\stackrel{\ensuremath{\rightarrow}}{d},p)d$ reactions at three incoming energies ${E}_{d}^{\mathrm{lab}}=140,$ 200, $270 \mathrm{MeV}.$ A wide range center-of-mass angles from...
The double differential cross sections at ${\ensuremath{\theta}}_{\mathrm{lab}}$ between $0.0\ifmmode^\circ\else\textdegree\fi{}$ and $12.3\ifmmode^\circ\else\textdegree\fi{}$ the polarization transfer ${D}_{\mathrm{NN}}$ $0\ifmmode^\circ\else\textdegree\fi{}$ for ${}^{90}\mathrm{Zr}(p,n)$ reaction are measured a bombarding energy of 295 MeV. A multipole decomposition technique is applied to extract $L=0$, $L=1$, $L=2$, $L=3$ contributions. Gamow-Teller (GT) strength $B(\mathrm{GT})$ in...
The angular distributions of the cross section, proton analyzing power, and all polarization transfer coefficients $\stackrel{\ensuremath{\rightarrow}}{p}d$ elastic scattering were measured at 250 MeV. range center-of-mass angles was $10\ifmmode^\circ\else\textdegree\fi{}--165\ifmmode^\circ\else\textdegree\fi{}$ for section about $10\ifmmode^\circ\else\textdegree\fi{}--95\ifmmode^\circ\else\textdegree\fi{}$ coefficients. These are first measurements a complete set observables intermediate...
The cross section, the deuteron vector A(d)(y) and tensor analyzing powers A(ij), polarization transfer coefficients K(y('))(ij), induced P(y(')) were measured for dp elastic scattering at 270 MeV. section are well reproduced by Faddeev calculations with modern data-equivalent nucleon-nucleon forces plus Tucson-Melbourne three-nucleon force. In contrast, or not described such calculations. These facts indicate deficiencies in spin dependence of force call extended models.
The cluster structures of the excited states in $^{11}$B are studied by analyzing isoscalar monopole and quadrupole strengths $^{11}$B($d$,$d'$) reaction at $E_d=200$ MeV. excitation compared with predictions shell-model antisymmetrized molecular-dynamics (AMD) calculations. It is found that large strength for $3/2^-_3$ state $E_x=8.56$ MeV well described AMD calculation an evidence a developed $2\alpha+t$ structure.
The double-differential cross sections for the Ca48(p,n) and Ti48(n,p) reactions were measured at 300 MeV. A multipole decomposition technique was applied to spectra extract Gamow-Teller (GT) components. integrated GT strengths up an excitation energy of 30 MeV in Sc48 are 15.3±2.2 2.8±0.3 (p,n) (n,p) spectra, respectively. In additional found above 8 where shell models within fp shell-model space predict almost no strengths, suggesting that present description nuclear matrix element...
Electron scattering cross section, as well proton observes the point-proton and point-neutron distributions, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="m1"><mml:mrow><mml:msub><mml:mrow><mml:mi>ρ</mml:mi></mml:mrow><mml:mrow><mml:mi>τ</mml:mi></mml:mrow></mml:msub><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:mrow><mml:mi>r</mml:mi></mml:mrow><mml:mo stretchy="false">)</mml:mo></mml:mrow><mml:mo>,</mml:mo><mml:mrow><mml:mo...
Double differential cross sections between 0°–12° were measured for the 90Zr(n, p) reaction at 293 MeV over a wide excitation energy range of 0–70 MeV. A multipole decomposition technique was applied to present data as well previously obtained 90Zr(p, n) extract Gamow–Teller (GT) component from continuum. The GT quenching factor Q derived by using total strengths. result is Q=0.88±0.06, not including an overall normalization uncertainty in unit section 16%.
Three precise measurements for elastic $pd$ scattering at $135\text{ }\text{ }\mathrm{MeV}/A$ have been performed with the three different experimental setups. The cross sections are described well by theoretical predictions based on modern nucleon-nucleon forces combined three-nucleon forces. Relativistic Faddeev calculations show that relativistic effects restricted to backward angles. This result supports two recently reported RIKEN and contradicts KVI data.
The differential cross sections and vector analyzing powers for nd elastic scattering at En=248 MeV were measured 10°–180° in the center-of-mass (c.m.) system. To cover wide angular range, experiments performed separately by using two different setups forward backward angles. data are compared with theoretical results based on Faddeev calculations realistic nucleon-nucleon (NN) forces such as AV18, CD Bonn, Nijmegen I II, their combinations three-nucleon (3NFs), Tucson-Melbourne 99 (TM99),...
Gamow-Teller (GT) transitions in atomic nuclei are sensitive to both nuclear shell structure and effective residual interactions. The GT excitations were studied for the mass number $A=42$, 46, 50, 54 ``$f$-shell'' ($^{3}\mathrm{He}$, $t$) charge-exchange reactions. In $^{42}\mathrm{Ca}\ensuremath{\rightarrow}^{42}\mathrm{Sc}$ reaction, most of strength is concentrated lowest excited state at 0.6 MeV, suggesting existence a low-energy phonon excitation. As $A$ increases, high-energy...
Very lately, the CREX group presents a skin value ΔRskin48(CREX)=0.121±0.026(exp)±0.024(model)=0.071∼0.171 fm. Meanwhile, PREX reported ΔRskin208(PREX2)=0.283±0.071=0.212∼0.354 In our previous paper, we determined both L–ΔRskin48 relation and L–ΔRskin208 one, using 206 EoSs, where L is slope parameter. We determine from ΔRskin48(CREX) ΔRskin208(PREX2), 207 EoSs. The yields L(CREX)=0∼51MeV ΔRskin208(PREX2) does L(PREX2)=76∼165MeV. There no overlap between L(CREX) L(PREX2). This big problem to...
The deuteron to proton polarization transfer coefficients for the $d$--$p$ elastic scattering were precisely measured with an incoming energy of 135 MeV/u at RIKEN Accelerator Research Facility. data are compared theoretical predictions based on exact solutions three-nucleon Faddeev equations high--precision nucleon--nucleon forces combined different (3NFs), representing current, most popular models: $2\pi$-exchange Tucson-Melbourne model, a modification thereof closer chiral symmetry...
We report measurements of cross sections and analyzing powers for reaction angles ${\ensuremath{\theta}}_{\mathrm{lab}}={0.0}^{\ensuremath{\circ}}$--${10.0}^{\ensuremath{\circ}}$ complete sets polarization transfer observables induced polarizations at ${\ensuremath{\theta}}_{\mathrm{lab}}={0.0}^{\ensuremath{\circ}}$--${7.0}^{\ensuremath{\circ}}$ the ${}^{208}\mathrm{Pb}(\stackrel{P\vec}{p},\stackrel{P\vec}{n})$ a bombarding energy ${T}_{p}=296$ MeV. A multipole decomposition technique was...
The dependence of the single-particle strength on difference between proton and neutron separation energies is studied for oxygen isotopes in a wide range isospins. cross sections quasi-free (|$p,2p$|) reaction |$^{14,16,18,22,24}$|O were measured at intermediate energies. are compared to predictions based distorted wave impulse approximation shell-model |$psd$| valence-space spectroscopic factors. reduction factors, which ratio experimental theoretical predictions, show no apparent...
The key parameter to discuss the possibility of pion condensation in nuclear matter, i.e., so-called Landau-Migdal g^{'}, was extracted by measuring double-differential cross sections for (p,n) reaction at 216 MeV/u on a neutron-rich doubly magic unstable nucleus, ^{132}Sn with quality comparable data taken stable nuclei. strengths Gamow-Teller (GT) transitions from leading ^{132}Sb exhibit GT giant resonance (GTR) excitation energy 16.3±0.4(stat)±0.4(syst) MeV width Γ=4.7±0.8 MeV....
The analyzing powers of ${\ensuremath{\pi}}^{+}$ and ${\ensuremath{\pi}}^{\ensuremath{-}}$ were measured using an incident $22\ensuremath{-}\mathrm{GeV}/c$ transversely polarized proton beam at the Brookhaven Alternating Gradient Synchrotron. A magnetic spectrometer ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ inclusive asymmetries on a hydrogen carbon target. An elastic polarimeter with ${\mathrm{CH}}_{2}$ target pp elastic-scattering to determine polarization published data for...
The fine structure of the Gamow-Teller resonance in a medium-heavy nucleus is observed for first time high-resolution $^{90}\mathrm{Zr}(^{3}\mathrm{He},t)^{90}\mathrm{Nb}$ experiment at Research Center Nuclear Physics, Osaka. Using novel wavelet analysis technique, it possible to extract characteristic energy scales and quantify their relative importance generation structure. This method combined with selectivity reaction permits an extraction level density ${1}^{+}$ states $^{90}\mathrm{Nb}$.