The University of Tokyo · 물리·천문학
K. Wimmer 교수의 연구실은 고에너지 및 방사성 빔을 이용한 핵반응 실험을 중심으로, 이국적 핵의 구조와 양자 상태의 진화를 연구합니다. 특히 역운동역학(역역학) 조건에서의 전이 반응을 통해 핵의 형상 공존, 쌍극자 전이 확률, 그리고 전자기 전이 성질을 정밀하게 측정하고 있습니다. 이는 핵구조 이론의 한계를 시험하고, 이소스핀 대칭의 파괴나 형상 변화와 같은 새로운 현상을 규명하는 데 기여합니다. 연구는 실험적 측정과 이론적 해석을 융합하여 핵물리학의 근본 문제를 해결하고자 합니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
The "island of inversion" nucleus 32 Mg has been studied by a (t, p) two neutron transfer reaction in inverse kinematics at REX-ISOLDE. The shape coexistent excited 0+ state in 32 Mg has been identified by the characteristic angular distribution of the protons of the Δ L=0 transfer. The excitation energy of 1058 keV is much lower than predicted by any theoretical model. The low γ-ray intensity observed for the decay of this 0+ state indicates a lifetime of more than 10 ns. Deduced spectroscopic
We studied the proton-rich T_{z}=-1 nucleus ^{70}Kr through inelastic scattering at intermediate energies in order to extract the reduced transition probability, B(E2;0^{+}→2^{+}). Comparison with the other members of the A=70 isospin triplet, ^{70}Br and ^{70}Se, studied in the same experiment, shows a 3σ deviation from the expected linearity of the electromagnetic matrix elements as a function of T_{z}. At present, no established nuclear structure theory can describe this observed deviation qu
Transfer reactions are a valuable tool to study the single-particle structure of nuclei. At radioactive beam facilities transfer reactions have to be performed in inverse kinematics. This creates a number of experimental challenges, but it also has some advantages over normal kinematics measurements. An overview of the experimental and theoretical methods for transfer reactions, especially with radioactive beams, is presented. Recent experimental results and highlights on shell evolution in exot
