We study a quantum ring （QR） with four electrons in a perpendicular external magnetic field B by exact diagonalization. The low-lying spectra of the QR as a function orb are obtained. A phase diagram is presented in...We study a quantum ring （QR） with four electrons in a perpendicular external magnetic field B by exact diagonalization. The low-lying spectra of the QR as a function orb are obtained. A phase diagram is presented indicating that the angular momentum and the spin of the ground state of the QR may jump when B and/or the radius of the QR vary, and a corresponding analysis is performed. By plotting the density functions of the QR, the ground-state configuration is found to be a regular quadrangle. Furthermore, the features of the ground-state persistent current are revealed.展开更多
Low-spin signature inversion has been systematically observed throughout the chart of nuclides in the πg9/2(■) vg9/2, πh11/2(■)vh11/2, πh11/2(■)vh13/2, and πh9/2(■) vi13/2, configurations. Considering the high...Low-spin signature inversion has been systematically observed throughout the chart of nuclides in the πg9/2(■) vg9/2, πh11/2(■)vh11/2, πh11/2(■)vh13/2, and πh9/2(■) vi13/2, configurations. Considering the high-j nature of these configurations, we have tried to find the similar signature inversion phenomenon in the πi13/2 (■) vi13/2, bands展开更多
The 'waiting point' nuclide 93Pd has been produced via the 58Ni(40Ca, 3n2p) reaction. A helium-jet fast tape transport system was used in combination with p-7 coincidence measurement to identify the β-delayed...The 'waiting point' nuclide 93Pd has been produced via the 58Ni(40Ca, 3n2p) reaction. A helium-jet fast tape transport system was used in combination with p-7 coincidence measurement to identify the β-delayed proton precursor 93Pd, whose half-life has been measured to be (1.3±0.2) s. The measured展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos.10874112, 10847267, and 10947101the Natural Scineee Foundation of Guangdong Province under Grant Nos.7007806, 06300345, and 8451027501001445
文摘We study a quantum ring （QR） with four electrons in a perpendicular external magnetic field B by exact diagonalization. The low-lying spectra of the QR as a function orb are obtained. A phase diagram is presented indicating that the angular momentum and the spin of the ground state of the QR may jump when B and/or the radius of the QR vary, and a corresponding analysis is performed. By plotting the density functions of the QR, the ground-state configuration is found to be a regular quadrangle. Furthermore, the features of the ground-state persistent current are revealed.
基金Supported by NNSFC (10375077, 10025525,10221003)the Major State Basic Research Development Program of China (G2000077400)the Chinese Academy of Sciences.
文摘Low-spin signature inversion has been systematically observed throughout the chart of nuclides in the πg9/2(■) vg9/2, πh11/2(■)vh11/2, πh11/2(■)vh13/2, and πh9/2(■) vi13/2, configurations. Considering the high-j nature of these configurations, we have tried to find the similar signature inversion phenomenon in the πi13/2 (■) vi13/2, bands
文摘The 'waiting point' nuclide 93Pd has been produced via the 58Ni(40Ca, 3n2p) reaction. A helium-jet fast tape transport system was used in combination with p-7 coincidence measurement to identify the β-delayed proton precursor 93Pd, whose half-life has been measured to be (1.3±0.2) s. The measured
