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Affiliation |
Engineering educational research section Applied Physics and Engineering Program |
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Title |
Associate Professor |
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External Link |
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MAEDA Yukie
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Degree 【 display / non-display 】
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Doctor (Science) ( 2004.3 The University of Tokyo )
Research Areas 【 display / non-display 】
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Natural Science / Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Papers 【 display / non-display 】
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Measurement of Spin Correlation Coefficient Cy,y for Proton-3He Elastic Scattering Reviewed International coauthorship
Watanabe A., Nakai S., Sekiguchi K., Goto S., Hatanaka K., Hirai Y., Ino T., Inomoto D., Inoue M., Ishikawa S., Itoh M., Kanda H., Kasahara H., Maeda Y., Miki K., Nonaka K., Ong H.J., Oshiro H., Sakai D., Sakai H., Shibuya S., Tran D.T., Umetsu H., Utsuki Y., Wakasa T.
Few-Body Systems 65 ( 2 ) 2024.6
Publishing type：Research paper (scientific journal) Publisher：Few-Body Systems
We present the measured spin correlation coefficient Cy,y for p-3He elastic scattering at 100 MeV at the angles θc.m.=46.9∘–149.2∘ in the center of mass system. The experiment was performed using a 100 MeV polarized proton beam in conjunction with the polarized 3He target. Proton beams were injected to the target, and scattered protons were detected by using E-ΔE detectors which consisted of plastic and NaI(Tl) scintillators. The data are compared with rigorous numerical calculations based on realistic NN potentials as well as with the Δ-isobar excitation. The obtained results indicate that the Cy,y expands the knowledge of the nuclear interactions with Δ-isobar or those including 3NFs that are masked in nucleon-deuteron elastic scattering.
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Mass, Spectroscopy, and Two-Neutron Decay of Be 16 Reviewed International coauthorship
Monteagudo B., Marque S F.M., Gibelin J., Orr N.A., Corsi A., Kubota Y., Casal J., Go Mez-Camacho J., Authelet G., Baba H., Caesar C., Calvet D., Delbart A., Dozono M., Feng J., Flavigny F., Gheller J.M., Giganon A., Gillibert A., Hasegawa K., Isobe T., Kanaya Y., Kawakami S., Kim D., Kiyokawa Y., Kobayashi M., Kobayashi N., Kobayashi T., Kondo Y., Korkulu Z., Koyama S., Lapoux V., Maeda Y., Motobayashi T., Miyazaki T., Nakamura T., Nakatsuka N., Nishio Y., Obertelli A., Ohkura A., Ota S., Otsu H., Ozaki T., Panin V., Paschalis S., Pollacco E.C., Reichert S., Rousse J.Y., Saito A.T., Sakaguchi S., Sako M., Santamaria C., Sasano M., Sato H., Shikata M., Shimizu Y., Shindo Y., Stuhl L., Sumikama T., Sun Y.L., Tabata M., Togano Y., Tsubota J., Uesaka T., Yang Z.H., Yasuda J., Yoneda K., Zenihiro J.
Physical Review Letters 132 ( 8 ) 082501 2024.2
Language：English Publishing type：Research paper (scientific journal) Publisher：Physical Review Letters
The structure and decay of the most neutron-rich beryllium isotope, Be16, has been investigated following proton knockout from a high-energy B17 beam. Two relatively narrow resonances were observed for the first time, with energies of 0.84(3) and 2.15(5) MeV above the two-neutron decay threshold and widths of 0.32(8) and 0.95(15) MeV, respectively. These were assigned to be the ground (Jπ=0+) and first excited (2+) state, with Ex=1.31(6) MeV. The mass excess of Be16 was thus deduced to be 56.93(13) MeV, some 0.5 MeV more bound than the only previous measurement. Both states were observed to decay by direct two-neutron emission. Calculations incorporating the evolution of the wave function during the decay as a genuine three-body process reproduced the principal characteristics of the neutron-neutron energy spectra for both levels, indicating that the ground state exhibits a strong spatially compact dineutron component, while the 2+ level presents a far more diffuse neutron-neutron distribution.
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Experimental study of (p, 2p) reactions at 197 MeV on <sup>12</sup>C, <sup>16</sup>O, <sup>40,48</sup>Ca, and <sup>90</sup>Zr nuclei leading to low-lying states of residual nuclei Reviewed International coauthorship
Noro T., Sakaguchi S., Wakasa T., Dozono M., Fujioka H., Fujita K., Hatanaka K., Ishida T., Iwamoto C., Kawase S., Kubota Y., Maeda Y., Matsubara H., Miki K., Ota S., Panin V., Sakaguchi H., Sakaue A., Sakemi Y., Sasano M., Sekiguchi K., Shimizu Y., Takeda H., Tameshige Y., Tamii A., Terashima S., Uesaka T., Yang Z.H., Yasuda Y., Yoshida H.P., Zenihiro J.
Progress of Theoretical and Experimental Physics 2023 ( 9 ) 2023.9
Language：English Publishing type：Research paper (scientific journal) Publisher：Progress of Theoretical and Experimental Physics
We have measured the differential cross section and analyzing power for (p, 2p) reactions that lead to discrete states of residual nuclei at an incident energy of 197 MeV for five kinds of target nuclei, 12C, 16O, 40,48Ca, and 90Zr. The data are compared with distorted-wave impulse approximation calculations using two kinds of global optical potentials. The spectroscopic factors obtained from these calculations agree with those determined in (e, e′p) studies within 20%, except for one orbital of the 90Zr nucleus where the distortion effect is much greater than that for the other orbitals of 90Zr and for other target nuclei. We also observed a clear and visibly distinct j-dependence in the analyzing power.
DOI： 10.1093/ptep/ptad116
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Saito F., Matsuda Y., Umemoto S., Yamasaki N., Itoh M., Zenihiro J., Dozono M., Hijikata Y., Terashima S., Harada T., Sakaguchi H., Ota S., Kohda A., Maeda Y., Kawabata T.
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 540 262 - 264 2023.7
Language：English Publishing type：Research paper (scientific journal) Publisher：Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
We developed an N2 gas scintillation counter as a time-of-flight counter for particle identification of radioactive isotope beams. Radiation damage, which often becomes a problem for high-intensity heavy ion beams, can be prevented by a continuous flow of N2 gas. The scintillator, with a volume of 60 mm × 60 mm × 100 mm, was filled with N2 gas at a pressure of approximately 100 kPa. Photons were detected using photomultiplier tubes attached to both sides of the vessel. The main emission wavelength of photons produced in the detector was 300–400 nm. Performance tests confirmed that the detector had sufficient detection efficiency, intrinsic time resolution, and short decay time. Additionally, the detector was demonstrated to be effective for particle identification.
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Searching for universality of dineutron correlation at the surface of Borromean nuclei Reviewed International coauthorship
Corsi A., Kubota Y., Casal J., Gómez-Ramos M., Moro A.M., Authelet G., Baba H., Caesar C., Calvet D., Delbart A., Dozono M., Feng J., Flavigny F., Gheller J.M., Gibelin J., Giganon A., Gillibert A., Hasegawa K., Isobe T., Kanaya Y., Kawakami S., Kim D., Kiyokawa Y., Kobayashi M., Kobayashi N., Kobayashi T., Kondo Y., Korkulu Z., Koyama S., Lapoux V., Maeda Y., Marqués F.M., Motobayashi T., Miyazaki T., Nakamura T., Nakatsuka N., Nishio Y., Obertelli A., Ohkura A., Orr N.A., Ota S., Otsu H., Ozaki T., Panin V., Paschalis S., Pollacco E.C., Reichert S., Rousse J.Y., Saito A.T., Sakaguchi S., Sako M., Santamaria C., Sasano M., Sato H., Shikata M., Shimizu Y., Shindo Y., Stuhl L., Sumikama T., Sun Y.L., Tabata M., Togano Y., Tsubota J., Uesaka T., Yang Z.H., Yasuda J., Yoneda K., Zenihiro J.
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 840 2023.5
Language：English Publishing type：Research paper (scientific journal) Publisher：Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
The dineutron correlation is systematically studied in three different Borromean nuclei near the neutron dripline, 11Li, 14Be and 17B, via the (p,pn) knockout reaction measured at the RIBF facility in RIKEN. For the three nuclei, the correlation angle between the valence neutrons is found to be largest in the same range of intrinsic momenta, which can be associated to the nuclear surface. This result reinforces the prediction that the formation of the dineutron is universal in environments with low neutron density, such as the surface of neutron-rich Borromean nuclei.
MISC 【 display / non-display 】
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Sakai H., Saito T., Ikeda T., Itoh K., Kawabata T., Kuboki H., Maeda Y., Matsui N., Rangacharyulu C., Sasano M., Satou Y., Sekiguchi K., Suda K., Tamii A., Uesaka T., Yako K.
Physical Review Letters 97 ( 17 ) 2006.11
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher：Physical Review Letters
Presentations 【 display / non-display 】
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陽子半径測定用スペクトロメータ系の制御システム開発 International coauthorship
阿部大希, 石崎一志, 尾原遼, 郷家大雅, 檀上梨花, 須田利美, 長澤育郎, 永野佑香, 堀田健悟, 本多佑記, 前田幸重, Clement Legris
日本物理学会2024年春季大会 (オンライン開催) 日本物理学会
Event date： 2024.3.18 - 2024.3.21
Language：Japanese Presentation type：Oral presentation (general)
Venue：オンライン開催
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クラスターノックアウト反応で探る40Ca中のクラスター構造 International coauthorship
辻崚太郎, 上坂友洋, 銭廣十三, 田中純貴, for the ONOKORO collaboration
日本物理学会2024年春季大会 (オンライン開催) 日本物理学会
Event date： 2024.3.18 - 2024.3.21
Language：Japanese Presentation type：Oral presentation (general)
Venue：オンライン開催
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Determination of the proton charge radius using low energy electron scattering International coauthorship
Clement Legris, Daiki Abe, Rika Danjo, Taiga Goke, Yuki Honda, Kengo Hotta, Kazushi Ishizaki, Michael Kohl, Yukie Maeda, Evelyn Morris, Toshiya Muto, Ryo Obara, Toshimi Suda
日本物理学会2024年春季大会 (オンライン開催) 日本物理学会
Event date： 2024.3.18 - 2024.3.21
Language：English Presentation type：Oral presentation (general)
Venue：オンライン開催
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クラスターノックアウト反応の素過程の理解に向けた230MeV d(p,p)分解反応測定 International coauthorship
三井真音, 前田幸重, 上坂友洋, 銭廣十三, 辻遼太郎, 他ONOKORO collaborator
日本物理学会2024年春季大会 (オンライン開催) 日本物理学会
Event date： 2024.3.18 - 2024.3.21
Language：Japanese Presentation type：Poster presentation
Venue：オンライン開催
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低エネルギー電子散乱による208Pb核の中性子分布半径測定 International coauthorship
檀上梨花, 阿部大希, 郷家大雅, 本多佑記, 堀田健悟, 石崎一志, C.Legris, 前田幸重, 前田裕成, 武藤俊哉, 永野佑香, 尾原遼, 小川原亮, 大西哲哉, 坂口治隆, 須田利美, 立花万里子, 塚田暁
日本物理学会2024年春季大会 (オンライン開催) 日本物理学会
Event date： 2024.3.18 - 2024.3.21
Language：Japanese Presentation type：Oral presentation (general)
Venue：オンライン開催
Awards 【 display / non-display 】
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the 2nd JINR award in the field of the scientific methodics
2012.2 Joint Institute for Nuclear Research (JINR)
P. Kurilkin, V. Ladygin, A. Malakhov, S. Reznikov, A. Khrenov, Y. Maeda, S. Sakaguchi, Y. Sasamoto, K. Suda, T. Uesaka
Country：Russian Federation
Grant-in-Aid for Scientific Research 【 display / non-display 】
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三核子系分解反応実験による核力の相対論的効果と多体効果の統括的解明 International coauthorship
Grant number：21K03590 2021.04 - 2025.03
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(C)
Authorship：Principal investigator
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陽子半径パズルの解明を目指した極限的低エネルギーでの電子・陽子弾性散乱
Grant number：20H05635 2020.04 - 2025.03
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(S)
Authorship：Coinvestigator(s)
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三核子系散乱による核子間三体力の完成
Grant number：20H05636 2020.04 - 2025.03
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(S)
Authorship：Coinvestigator(s)
核力の三体力効果の研究が近年盛んに行われている。しかし中間エネルギー領域におけるスピン観測量については、実験値を理論計算が再現できておらず、三体力のスピン依存成分には大きな問題があるのが現状である。本研究では、偏極陽子標的と偏極重陽子ビームとの散乱実験を行うことで、三体力の荷電スピンT=１/2成分のスピン依存項に関する完全実験研究を行う。
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陽子・ヘリウム３散乱による三体力荷電スピンT=3/2項の決定
2016.04 - 2020.03
科学研究費補助金 基盤研究(A)
核力の三体力効果の研究が近年盛んに行われている。しかし実験的困難さから、過去の実験研究は荷電スピンT=1/2成分に関するものに限られてきた。本研究では、偏極ヘリウム３標的を開発し、陽子ビームとの散乱実験を行うことで、三体力の荷電スピンT=3/2成分のスピン依存項に関する直接的実験研究を行う。
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極低運動量移行の電子弾性散乱による陽子電荷半径精密決定
2016.04 - 2020.03
科学研究費補助金 基盤研究(S)
Authorship：Coinvestigator(s)
Available Technology 【 display / non-display 】
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原子核の性質に関する基礎研究
放射線計測技術の開発と応用
同位体（アイソトープ）標的の製作Related fields where technical consultation is available：・放射線の検出、放射性物質の定性・定量分析、及びその応用
・放射性同位体（RI）の取扱い
・放射線遮蔽評価・シミュレーションMessage：・国内の加速器施設を利用した、環境・食品・工業製品の放射線検査や生物の遺伝子変換などのビーム照射実験のニーズがあれば、ご連絡下さい。