20th Young Scientist Award (2026), Physical Society of Japan - Experimental Nuclear Physics Division and the 32nd Nuclear Physics Colloquium Young Researcher Prize
Dr. OKUDAIRA Takuya, Assistant Professor at the Graduate School of Science, Nagoya University, and Visiting Researcher in the Technology Development Section of the J-PARC Center, has received the award. This award also serves as the 32nd Young Researcher Prize of the Nuclear Physics Forum.
Dr. OKUDAIRA, together with Dr. OKU Takayuki and colleagues at the J-PARC Center, developed a 3He spin filter, achieving world leading performance. By installing this device on a J-PARC neutron beamline, he conducted research on the enhancement effect of time reversal symmetry violation in neutron resonance reactions of nuclei. These results were made possible by using J-PARC's high intensity polarized neutron beams and represent achievements unique to J-PARC.
This study demonstrated that, in neutron resonance reactions of nuclei, time reversal symmetry violation-believed to exist in nucleon-nucleon interactions--can appear with an effect up to one million times larger than in elementary processes. This is an important result in the search for physics beyond the Standard Model. In addition to the excellence of the research, Dr. OKUDAIRA's strong future potential was highly recognized.
Further contributions to the development of the Physical Society of Japan and the field of nuclear physics are expected in the future.
Papers Selected for the Award
1. "Angular Distribution of γ-rays from Neutron-Induced Compound States of 140La", T. Okudaira, S. Takada, K. Hirota, A. Kimura, M. Kitaguchi, J. Koga, K. Nagamoto, T. Nakao, A. Okada, K. Sakai, H. M. Shimizu, T. Yamamoto, T. Yoshioka, Phys. Rev. C 97 (2018) 034622.
2. "Development and application of a 3He Neutron Spin Filter at J-PARC", T. Okudaira, et al., Nucl. Instrum. Methods Phys. Res., Sect. A977 (2020) 164301.
3. "Transverse asymmetry of γ-rays from neutron-induced compound states of 140La", T. Yamamoto, T. Okudaira, et al., Phys. Rev. C 101 (2020) 064624.
4. "Spin dependence in the p-wave resonance of La+ n", T. Okudaira, et al., Phys. Rev. C 109 (2024) 044606.
5. "High sensitivity of a future search for P-odd/T-odd interactions on the 0.75 eV p-wave resonance in n + 139La forward transmission determined using pulsed neutron beam", R. Nakabe, et al., Phys. Rev. C 109 (2024) L041602, Editor's suggestion.
Related Articles
https://j-parc.jp/c/topics/2021/12/06000774.html
https://www.j-parc.jp/c/press-release/2020/07/15000563.html
 |