M. Takechi
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View article: Impact of Newly Measured <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>β</mml:mi></mml:math>-Delayed Neutron Emitters around <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Ni</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>78</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> on Light Element Nucleosynthesis in the Neutrino Wind Following a Neutron Star Merger
Impact of Newly Measured -Delayed Neutron Emitters around on Light Element Nucleosynthesis in the Neutrino Wind Following a Neutron Star Merger Open
Neutron emission probabilities and half-lives of 37 β-delayed neutron emitters from Ni75 to Br92 were measured at the RIKEN Nishina Center in Japan, including 11 one-neutron and 13 two-neutron emission probabilities and six half-lives for …
View article: Alpha spectroscopy of purified beams of exotic nuclei at the FRS Ion Catcher
Alpha spectroscopy of purified beams of exotic nuclei at the FRS Ion Catcher Open
The FRS Ion Catcher (FRS-IC) is located at the final focal plane of the Fragment Separator FRS at GSI. The FRS-IC setup is well known for high-precision experiments with stopped exotic nuclei produced by projectile fragmentation and fissio…
View article: Production Cross-Sections of Residual Nuclides from 93Zr + <i>p</i> at 27 MeV/nucleon
Production Cross-Sections of Residual Nuclides from 93Zr + <i>p</i> at 27 MeV/nucleon Open
Nuclear transmutation is emerging as a promising approach for reprocessing high-level waste, specifically treating long-lived nuclides like $^{93}$Zr from spent fuel. It is essential to accumulate reaction data for these nuclei to advance …
View article: Studying the impact of deuteron non-elastic breakup on 93Zr + d reaction cross sections measured at 28 MeV/nucleon
Studying the impact of deuteron non-elastic breakup on 93Zr + d reaction cross sections measured at 28 MeV/nucleon Open
The deuteron is a loosely bound system that can easily break up into its constituent proton and neutron whilst in the presence of Coulomb and nuclear fields. Previous experimental studies have shown that this breakup process has a signific…
View article: Erratum: High-resolution, accurate multiple-reflection time-of-flight mass spectrometry for short-lived, exotic nuclei of a few events in their ground and low-lying isomeric states [Phys. Rev. C <b>99</b>, 064313 (2019)]
Erratum: High-resolution, accurate multiple-reflection time-of-flight mass spectrometry for short-lived, exotic nuclei of a few events in their ground and low-lying isomeric states [Phys. Rev. C <b>99</b>, 064313 (2019)] Open
Received 16 January 2023DOI:https://doi.org/10.1103/PhysRevC.107.029901Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintai…
View article: Neutron-skin values and matter and neutron radii determined from reaction cross sections of proton scattering on $^{12}$C, $^{40,48}$Ca, $^{58}$Ni, $^{208}$Pb
Neutron-skin values and matter and neutron radii determined from reaction cross sections of proton scattering on $^{12}$C, $^{40,48}$Ca, $^{58}$Ni, $^{208}$Pb Open
Very lately, the PREX and the CREX collaboration present skin values, $r_{\rm skin}^{208}({\rm newPREX2}) =0.278 \pm 0.078\ {\rm (exp)} \pm 0.012\ {\rm (theor.)}\,{\rm fm}$ and $r_{\rm skin}^{48}=0.121 \pm 0.026\ {\rm (exp)} \pm 0.024\ {\r…
View article: Systematic study of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi mathvariant="normal">Δ</mml:mi></mml:math>(1232) resonance excitations using single isobaric charge-exchange reactions induced by medium-mass projectiles of Sn
Systematic study of (1232) resonance excitations using single isobaric charge-exchange reactions induced by medium-mass projectiles of Sn Open
The fragment separator FRS has been used for the first time to measure the (n,p)- and (p,n)-type isobaric charge-exchange cross sections of stable Sn112,124 isotopes accelerated at 1A GeV with an uncertainty of 3% and to separate quasielas…
View article: Matter radii and skins of $^{6,8}$He from reaction cross section of proton+$^{6,8}$He scattering based on the Love-Franey $t$-matrix model (published in Results in Physics)
Matter radii and skins of $^{6,8}$He from reaction cross section of proton+$^{6,8}$He scattering based on the Love-Franey $t$-matrix model (published in Results in Physics) Open
For $^{4,6,8}$He, Tanihata et al. determined matter radii $r_{m}(σ_{\rm I})=1.57(4), 2.48(3), 2.52(3)$~fm from interaction cross sections $σ_{\rm I}$ for $^{4,6,8}$He scattering on Be, C Al targets at 790~MeV/nucleon. Lu et al. measured th…
View article: Neutron skin in $^{48}$Ca determined from p+$^{48}$Ca and $^{48}$Ca+$^{12}$C scattering
Neutron skin in $^{48}$Ca determined from p+$^{48}$Ca and $^{48}$Ca+$^{12}$C scattering Open
In our previous paper, we determined $r_{\rm skin}^{208}({\rm exp})=0.278 \pm 0.035$~fm from $σ_{\rm R}$ for p+$^{208}$Pb scattering, using the Kyushu (chiral) $g$-matrix folding model with the densities calculated with D1S-GHFB with the a…
View article: Charge-changing cross sections for $^{42\textrm{--}51}$Ca and effect of charged-particle evaporation induced by neutron removal reaction
Charge-changing cross sections for $^{42\textrm{--}51}$Ca and effect of charged-particle evaporation induced by neutron removal reaction Open
Charge-changing cross sections $σ_\mathrm{CC}$ for $^{42\textrm{--}51}$Ca on a carbon target at around 280~MeV/nucleon have been measured. The measured $σ_\mathrm{CC}$ values differ significantly from the previously developed calculations …
View article: Systematic study of Δ(1232) resonance excitations using single isobaric charge-exchange reactions induced by medium-mass projectiles of Sn
Systematic study of Δ(1232) resonance excitations using single isobaric charge-exchange reactions induced by medium-mass projectiles of Sn Open
The fragment separator FRS has been for the first time used to measure the (n,p) and (p,n)-type isobaric charge-exchange cross sections of stable 112,124Sn isotopes accelerated at 1A GeV with an uncertainty of 3% and to separate quasi-elas…
View article: Reaction cross section of proton scattering consistent with PREX-II
Reaction cross section of proton scattering consistent with PREX-II Open
Background:: The neutron skin thickness RskinPVof PREX-II is presented in Adhikari et al. (2021). The reaction cross section σRis useful to determine the matter radius Rmand Rskin. For proton scattering, the reaction cross section σRare av…
View article: Reaction cross section of proton scattering consistent with PREX-II (published in Results in Physics)
Reaction cross section of proton scattering consistent with PREX-II (published in Results in Physics) Open
Background: The neutron skin thickness $R_{\rm skin}^{\rm PV}$ of PREX-II is presented in Phys. Rev. Lett. {\bf 126}, 172502 (2021). The reaction cross section $σ_R$ is useful to determine the matter radius $R_m$ and $R_{\rm skin}$. For pr…
View article: Determination of matter radius and neutron skin of $^{58}$Ni from reaction cross section of proton+$^{58}$Ni scattering based on chiral $g$-matrix model
Determination of matter radius and neutron skin of $^{58}$Ni from reaction cross section of proton+$^{58}$Ni scattering based on chiral $g$-matrix model Open
Background: Using the chiral (Kyushu) $g$-matrix folding model with the densities calculated with Gogny-HFB (GHFB) with the angular momentum projection (AMP), we determined the central values of matter radius and neutron skin from the cent…
View article: Chiral $g$-matrix model for reaction cross section of proton+$^{40}$Ca scattering: Matter radius $r_{\rm m}$ and skin $r_{\rm skin}$ for $^{40}$Ca
Chiral $g$-matrix model for reaction cross section of proton+$^{40}$Ca scattering: Matter radius $r_{\rm m}$ and skin $r_{\rm skin}$ for $^{40}$Ca Open
For $^{48}$Ca, we determined $r_{m}$fm and $r_{\rm skin}$fm from the central values of $\sigma_{\rm R}({\rm EXP})$ of p+$^{48}$Ca scattering, using the chiral (Kyushu) $g$-matrix folding model with the GHFB+AMP densities. For $^{40}$Ca, Ze…
View article: Folding-model approach to reaction cross section of $^{4,6,8}$He+$^{12}$C scattering at 790 MeV (published in Results in Physics)
Folding-model approach to reaction cross section of $^{4,6,8}$He+$^{12}$C scattering at 790 MeV (published in Results in Physics) Open
Tanihata {\it et al.} determined matter radii $r_{m}(σ_{\rm I})$ for $^{4,6,8}$He from interaction cross sections $σ_{\rm I}$ of $^{4,6,8}$He+$^{12}$C scattering at 790 MeV per nucleon, using the optical limit of the Glauber model. Lu {\it…
View article: Performance of the OEDO beamline
Performance of the OEDO beamline Open
The OEDO (Optimized Energy Degrading Optics for RI beam) beamline has been developed to obtain low-energy (10 – 50 MeV/u) RI beams by slowing down the secondary beams at RIBF, RIKEN. Such beams are useful probes to investigate nuclear stru…
View article: Isobaric charge-exchange reactions: a tool to study the excitation of baryonic resonances in exotic nuclear matter
Isobaric charge-exchange reactions: a tool to study the excitation of baryonic resonances in exotic nuclear matter Open
Isobaric charge-exchange reactions induced by beams of 112 Sn have been investigated at the GSI facility using the fragment separator FRS. The high-resolving power of this spectrometer makes it possible to obtain the isobaric charge-exchan…
View article: Search for η’-mesic nuclei using (p,d) reaction with FRS/Super-FRS at GSI/FAIR
Search for η’-mesic nuclei using (p,d) reaction with FRS/Super-FRS at GSI/FAIR Open
We plan a semi-exclusive measurement of the 12 C( p,dp ) reaction to search for η’-mesic nuclei, aiming at investigating in-medium properties of the η′-meson. We employ a 2.5 GeV proton beam impinging on a carbon target to produce η′-mesic…
View article: Neutron skin $r_{\rm skin}^{48}$ determined from reaction cross section of proton+$^{48}$Ca scattering
Neutron skin $r_{\rm skin}^{48}$ determined from reaction cross section of proton+$^{48}$Ca scattering Open
{\bf Background:} Using the chiral (Kyushu) $g$-matrix folding model with the densities calculated with GHFB+AMP, we determined $r_{\rm skin}^{208}=0.25$fm from the central values of $σ_{\rm R}$ of p+$^{208}$Pb scattering in $E_{\rm in}=40…
View article: Neutron skin $r_{\rm skin}^{208}$ determined from reaction cross section for proton scattering: A preliminary result of PREX-II
Neutron skin $r_{\rm skin}^{208}$ determined from reaction cross section for proton scattering: A preliminary result of PREX-II Open
Reaction cross sections $\sigma_{\rm R}({\rm EXP})$ are available as a function of $E_{\rm lab}$ for $p$+$^{208}$Pb scattering. We tested the chiral (Kyushu) $g$-matrix folding model for $^{12}$C scattering on $^{9}$Be, $^{12}$C, $^{27}$Al…
View article: Determination of rskin208 from reaction cross section for proton scattering
Determination of rskin208 from reaction cross section for proton scattering Open
Reaction cross sections are available for $p$ scattering on $^{208}$Pb. We reanalyzed interaction cross sections for $^{42-51}$Ca+$^{12}$C scattering, using the chiral (Kyushu) $g$-matrix folding model with the densities calculated with GH…
View article: Excitation of baryonic resonances in stable medium-mass nuclei of Sn
Excitation of baryonic resonances in stable medium-mass nuclei of Sn Open
Isobaric charge-exchange reactions induced by beams of 112 Sn have been investigated at the GSI facilities using the fragment separator FRS. The high-resolving power of this spectrometer makes it possible to obtain the isobaric charge-exch…
View article: Reanalyses for $^{42-51}$Ca scattering on a $^{12}$C target at $280$ MeV/nucleon based on chiral $g$ folding mode with Gogny-D1S Hartree-Fock-Bogoliubov densities (published in Results in Physics)
Reanalyses for $^{42-51}$Ca scattering on a $^{12}$C target at $280$ MeV/nucleon based on chiral $g$ folding mode with Gogny-D1S Hartree-Fock-Bogoliubov densities (published in Results in Physics) Open
In the previous paper, we predicted reaction cross sections $σ_{\rm R}$ for $^{40-60,62,64}$Ca+$^{12}$C scattering at $280$~MeV/nucleon, since Tanaka {\it el al.} measured interaction cross sections $σ_{\rm I}$ for $^{42-51}$Ca in RIKEN an…