H. Makii
YOU?
Author Swipe
View article: Competition between mass-symmetric and asymmetric fission modes in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Md</mml:mi><mml:mprescripts/><mml:none/><mml:mn>258</mml:mn></mml:mmultiscripts></mml:math> produced in the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>He</mml:mi><mml:mprescripts/><mml:none/><mml:mn>4</mml:mn></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi>Es</mml:mi><mml:mprescripts/><mml:none/><mml:mn>254</mml:mn></mml:mmultiscripts></mml:mrow></mml:math> reaction
Competition between mass-symmetric and asymmetric fission modes in produced in the reaction Open
View article: Search for the 6α condensed state in 24Mg using the 12C+12C scattering
Search for the 6α condensed state in 24Mg using the 12C+12C scattering Open
View article: Measurement of double-differential neutron yields for iron, lead, and bismuth induced by 107-MeV protons for research and development of accelerator-driven systems
Measurement of double-differential neutron yields for iron, lead, and bismuth induced by 107-MeV protons for research and development of accelerator-driven systems Open
For the research and development of accelerator-driven systems (ADSs) and fundamental ADS reactor physics research using the Kyoto University Critical Assembly combined with the fixed-field alternating gradient (FFAG) accelerator, we are c…
View article: New <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>K</mml:mi></mml:math> isomers in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Cf</mml:mi><mml:mprescripts/><mml:none/><mml:mn>248</mml:mn></mml:mmultiscripts></mml:math>
New isomers in Open
The nuclear structure of $^{248}\mathrm{Cf}$ was investigated at the Tokai Tandem Accelerator Laboratory of the Japan Atomic Energy Agency. $^{248}\mathrm{Cf}$ was one of the nuclei produced in the $^{18}\mathrm{O}+^{249}\mathrm{Cf}$ multi…
View article: Measurement of 107-MeV proton-induced double-differential thick target neutron yields for Fe, Pb, and Bi using a fixed-field alternating gradient accelerator at Kyoto University
Measurement of 107-MeV proton-induced double-differential thick target neutron yields for Fe, Pb, and Bi using a fixed-field alternating gradient accelerator at Kyoto University Open
Double-differential thick target neutron yields (TTNYs) for Fe, Pb, and Bi targets induced by 107-MeV protons were measured using the fixed-field alternating gradient accelerator at Kyoto University for the research and development of acce…
View article: The <sup>59</sup>Fe (n,γ) <sup>60</sup>Fe Cross Section from the Surrogate Ratio Method and Its Effect on the <sup>60</sup>Fe Nucleosynthesis
The <sup>59</sup>Fe (n,γ) <sup>60</sup>Fe Cross Section from the Surrogate Ratio Method and Its Effect on the <sup>60</sup>Fe Nucleosynthesis Open
The long-lived 60 Fe (with a half-life of 2.62 Myr) is a crucial diagnostic of active nucleosynthesis in the Milky Way galaxy and in supernovae near the solar system. The neutron-capture reaction 59 Fe(n, γ ) 60 Fe on 59 Fe (half-life = 44…
View article: Inside Back Cover: Chemical Characterization of a Volatile Dubnium Compound, DbOCl<sub>3</sub> (Angew. Chem. Int. Ed. 33/2021)
Inside Back Cover: Chemical Characterization of a Volatile Dubnium Compound, DbOCl<sub>3</sub> (Angew. Chem. Int. Ed. 33/2021) Open
Extreme gas-phase chemistry with the exotic transactinide dubnium and its lighter homologues tantalum and niobium is described by Nadine M. Chiera, Tetsuya K. Sato, and co-workers in their Communication on page 17871. The sequence of volat…
View article: Chemical Characterization of a Volatile Dubnium Compound, DbOCl<sub>3</sub>
Chemical Characterization of a Volatile Dubnium Compound, DbOCl<sub>3</sub> Open
The formation and the chemical characterization of single atoms of dubnium (Db, element 105), in the form of its volatile oxychloride, was investigated using the on‐line gas phase chromatography technique, in the temperature range 350–600 …
View article: Measurement of fission-fragment mass distributions in the multinucleon transfer channels of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">O</mml:mi><mml:mprescripts/><mml:none/><mml:mn>18</mml:mn></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi>Np</mml:mi><mml:mprescripts/><mml:none/><mml:mn>237</mml:mn></mml:mmultiscripts></mml:mrow></mml:math>reaction
Measurement of fission-fragment mass distributions in the multinucleon transfer channels of thereaction Open
Fission-fragment mass distributions for 23 nuclei (U234−237, Np236−239, Pu238−241, Am240−243, Cm242−245, and Bk244−246) were measured using the multinucleon transfer approach in the reaction of O18+Np237, and their excitation-energy depend…
View article: Experimental Study of the <sup>7</sup>Be\((n,p_{1})\)<sup>7</sup>Li<sup>*</sup> Reaction for the Cosmological Lithium Problem
Experimental Study of the <sup>7</sup>Be\((n,p_{1})\)<sup>7</sup>Li<sup>*</sup> Reaction for the Cosmological Lithium Problem Open
View article: New excited <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mn>2</mml:mn><mml:mo>+</mml:mo></mml:msup></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mn>3</mml:mn><mml:mo>−</mml:mo></mml:msup></mml:math> two-proton states in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Po</mml:mi><mml:mn>126</mml:mn><mml:none/><mml:mprescripts/><mml:mrow><mml:mspace width="0.28em"/><mml:mspace width="0.28em"/><mml:mn>84</mml:mn></mml:mrow><mml:mn>210</mml:mn></mml:mmultiscripts></mml:math> populated by two-proton transfer
New excited and two-proton states in populated by two-proton transfer Open
Five new ${2}^{+}$ levels have been established in the semimagic $^{210}\mathrm{Po}$ nucleus from a $^{208}\mathrm{Pb}(^{12}\mathrm{C},^{10}\mathrm{Be}$) two-proton transfer experiment, performed at energies close to the Coulomb barrier at…
View article: Status Report on IS556 : Spectroscopy of low-lying single-particle states in $^{81}$Zn populated in the $^{80}$Zn(d,p) reaction
Status Report on IS556 : Spectroscopy of low-lying single-particle states in $^{81}$Zn populated in the $^{80}$Zn(d,p) reaction Open
View article: Effects of the nuclear structure of fission fragments on the high-energy prompt fission <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math>-ray spectrum in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">U</mml:mi><mml:mprescripts/><mml:none/><mml:mn>235</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:msub><mml:mi>n</mml:mi><mml:mi>th</mml:mi></mml:msub><mml:mo>,</mml:mo><mml:mi>f</mml:mi></mml:mrow><mml:mo>)</mml:mo></mml:math>
Effects of the nuclear structure of fission fragments on the high-energy prompt fission -ray spectrum in Open
The prompt fission γ-ray energy spectrum for cold-neutron-induced fission of U235 was measured in the energy range Eγ=0.8–20MeV, by gaining a factor of about 105 in statistics compared to the measurements performed so far. The spectrum exh…
View article: Search for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math> decay of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Te</mml:mi><mml:mprescripts/><mml:none/><mml:mn>104</mml:mn></mml:mmultiscripts></mml:math> with a novel recoil-decay scintillation detector
Search for decay of with a novel recoil-decay scintillation detector Open
A search for superallowed α decay of N=Z nuclei Te104 and Xe108 was carried out using a novel recoil-decay scintillator detector at the tandem accelerator facility at the Japan Atomic Energy Agency (JAEA). In this study, inorganic crystal …
View article: Direct measurement of fission barrier height of unstable heavy nuclei at ISOL facilities
Direct measurement of fission barrier height of unstable heavy nuclei at ISOL facilities Open
Fission barrier height is one of the least known nuclear parameters, with experimental data, acquired decades ago, existing only close to beta-stability line. Availability of heavy radioactive beams offers possibility to investigate fissio…
View article: Observation of the competing fission modes in 178Pt
Observation of the competing fission modes in 178Pt Open
Fragment mass distributions from fission of the excited compound nucleus 178Pt have been deduced from the calculated fragment velocities. The 178Pt nucleus was created at the JAEA tandem facility in a complete fusion …
View article: First Ionization Potentials of Fm, Md, No, and Lr: Verification of Filling-Up of 5f Electrons and Confirmation of the Actinide Series
First Ionization Potentials of Fm, Md, No, and Lr: Verification of Filling-Up of 5f Electrons and Confirmation of the Actinide Series Open
We report the first ionization potentials (IP1) of the heavy actinides, fermium (Fm, atomic number Z = 100), mendelevium (Md, Z = 101), nobelium (No, Z = 102), and lawrencium (Lr, Z = 103), determined using a method based on a s…
View article: Study of fission using multi-nucleon transfer reactions
Study of fission using multi-nucleon transfer reactions Open
Multi-nucleon transfer channels of the reactions of 18 O+ 232 Th, 18 O+ 238 U, 18 O+ 248 Cm were used to measure fission-fragment mass distribution for various nuclides and their excitation energy dependence. Predominantly asymmetric fissi…
View article: Study of the contribution of the <sup>7</sup>Be(<i>d, p</i>) reaction to the <sup>7</sup>Li problem in the Big-Bang Nucleosynthesis
Study of the contribution of the <sup>7</sup>Be(<i>d, p</i>) reaction to the <sup>7</sup>Li problem in the Big-Bang Nucleosynthesis Open
Our research goal is to measure the 7 Be( d, p ) reaction to shed light on the 7 Li problem in the Big-Bang Nucleosynthesis. We are developing an unstable 7Be target for a high-resolution measurement of the 7 Be( d, p ) 8 Be reaction. We p…
View article: The <sup>95</sup>Zr(n, γ)<sup>96</sup>Zr Cross Section from the Surrogate Ratio Method and Its Effect on s-process Nucleosynthesis
The <sup>95</sup>Zr(n, γ)<sup>96</sup>Zr Cross Section from the Surrogate Ratio Method and Its Effect on s-process Nucleosynthesis Open
The 95Zr(n, γ)96Zr reaction cross section is crucial in the modeling of s-process nucleosynthesis in asymptotic giant branch stars because it controls the operation of the branching point at the unstable 95Zr and the subsequent production …
View article: Measurement of high-energy prompt gamma-rays from neutron induced fission of U-235
Measurement of high-energy prompt gamma-rays from neutron induced fission of U-235 Open
We have developed a new setup to measure prompt gamma-rays from the 235U(nth; f ) reaction. The setup consists of two multi-wire proportional counters (MWPCs) to detect the fission fragments, two LaBr3(Ce) scintillators to measure the gamm…
View article: Study of fission using multi-nucleon transfer reactions
Study of fission using multi-nucleon transfer reactions Open
It is shown that multi-nucleon transfer reaction is a powerful tool to study fission of exotic neutronrich actinide nuclei, which cannot be accessed by particle-capture or heavy-ion fusion reactions. In this work, multi-nucleon transfer ch…
View article: Experimental fission study using multi-nucleon transfer reactions
Experimental fission study using multi-nucleon transfer reactions Open
\nIt is shown that the multi-nucleon transfer reactions is a powerful tool to study fission of exotic neutron-rich actinide nuclei, which cannot be accessed by particle-capture or heavy-ion fusion reactions. In this work, multi-nucleon tra…
View article: Fission fragments mass distributions of nuclei populated by the multinucleon transfer channels of the 18O +232Th reaction
Fission fragments mass distributions of nuclei populated by the multinucleon transfer channels of the 18O +232Th reaction Open
It is shown that the multinucleon transfer reactions is a powerful tool to study fission of exotic neutron-rich actinide nuclei, which cannot be accessed by particle-capture or heavy-ion fusion reactions. In this work, multinucleon transfe…
View article: A Comprehensive Approach to Determination of Nuclear Data of Unstable Nuclei
A Comprehensive Approach to Determination of Nuclear Data of Unstable Nuclei Open
\nA comprehensive approach to determine nuclear data of unstable nuclei will be described. It consists of a measurement of fission and capture cross sections, mass distribution of fission fragments (independent fission yields) and number o…
View article: Excitation energy dependence of fragment-mass distributions from fission of 180,190 Hg formed in fusion reactions of 36 Ar + 144,154 Sm
Excitation energy dependence of fragment-mass distributions from fission of 180,190 Hg formed in fusion reactions of 36 Ar + 144,154 Sm Open
View article: Fission Study of Actinide Nuclei Using Multi-nucleon Transfer Reactions
Fission Study of Actinide Nuclei Using Multi-nucleon Transfer Reactions Open
We have developed a set up to measure fission properties of excited compound nuclei populated by multi-nucleon transfer reactions. This approach has an advantage that we can study fission of neutron-rich nuclei which cannot be accessed by …