Based on the passive spectroscopy,the D_α atomic emission spectra in the boundary region of the plasma have been measured by a high resolution optical spectroscopic multichannel analysis（OSMA） system in EAST tokama...Based on the passive spectroscopy,the D_α atomic emission spectra in the boundary region of the plasma have been measured by a high resolution optical spectroscopic multichannel analysis（OSMA） system in EAST tokamak.The Zeeman splitting of the D_α spectral lines has been observed.A fitting procedure by using a nonlinear least squares method was applied to fit and analyze all polarization π and ±σ components of the D_α atomic spectra to acquire the information of the local plasma.The spectral line shape was investigated according to emission spectra from different regions（e.g.,low-field side and high-field side） along the viewing chords.Each polarization component was fitted and classified into three energy categories（the cold,warm,and hot components） based on different atomic production processes,in consistent with the transition energy distribution by calculating the gradient of the D_α spectral profile.The emission position,magnetic field intensity,and flow velocity of a deuterium atom were also discussed in the context.展开更多
We study the Zeeman effect on the d-wave superconductor and tunneling spectrum in normal-metal(N)/d-wave superconductor(S) junction by applying a Zeeman magnetic field to the S. It is shown that: (1) the Zeeman magnet...We study the Zeeman effect on the d-wave superconductor and tunneling spectrum in normal-metal(N)/d-wave superconductor(S) junction by applying a Zeeman magnetic field to the S. It is shown that: (1) the Zeeman magnetic field can lead to the S gap decreasing, and with the increase in Zeeman energy, the superconducting state is changed to the normal state, exhibiting a first-order phase transition; (2) the Zeeman magnetic field may make the zero-bias conductance peak split into two peaks, and the energy difference between the two splitting peaks in the conductance spectrum is equal to 2h0 (h0 is the Zeeman energy); (3) both the barrier strength of interface scattering and the temperature can lower the magnitudes of splitting peaks, of which the barrier strength can lead to the splitting peaks becoming sharp and the temperature can smear out the peaks, however, neither of them can influence the Zeeman effect.展开更多
In this communication, we report about the influence of barrier U1, formed by magnetic layer (Zn0.9Be0.05Mn0.05Se) and changed by extending magnetic field due to Zeeman effect on the ground state energy of electron in...In this communication, we report about the influence of barrier U1, formed by magnetic layer (Zn0.9Be0.05Mn0.05Se) and changed by extending magnetic field due to Zeeman effect on the ground state energy of electron in nanoheterostructure Zn0.943Be0.057Se-ZnSe-Zn0.943Be0.057Se-Zn0.9Be0.05Mn0.05Se. The investigations were also carried out for different width of unmagnetic layer (Zn0.943Be0.057Se), with which such structures were prepared. The results point on decreasing of the ground state energy with magnetic field increasing. The unmagnetic layer width does not change essentially the energy of electrons in strong fields. In small fields, it is shown that the electron energy does not always depend on the extended field. These cases are also dependent on non magnetic layer width. The received dependences are in qualitative agreement with the experiment data on photoluminescence spectra.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11275231 and 11575249)the National Magnetic Confinement Fusion Energy Research Program of China(Grant No.2015GB110005)
文摘Based on the passive spectroscopy,the D_α atomic emission spectra in the boundary region of the plasma have been measured by a high resolution optical spectroscopic multichannel analysis（OSMA） system in EAST tokamak.The Zeeman splitting of the D_α spectral lines has been observed.A fitting procedure by using a nonlinear least squares method was applied to fit and analyze all polarization π and ±σ components of the D_α atomic spectra to acquire the information of the local plasma.The spectral line shape was investigated according to emission spectra from different regions（e.g.,low-field side and high-field side） along the viewing chords.Each polarization component was fitted and classified into three energy categories（the cold,warm,and hot components） based on different atomic production processes,in consistent with the transition energy distribution by calculating the gradient of the D_α spectral profile.The emission position,magnetic field intensity,and flow velocity of a deuterium atom were also discussed in the context.
基金The author thanks Professor D.Y. Xing for useful discussion. This work is supported by the Jiangsu Planned Projects for Postdoctoral Research Funds, the Natural Science Foundation of Education Bureau of Jiangsu Province of China (Grant No. 05KJB 14008).
文摘We study the Zeeman effect on the d-wave superconductor and tunneling spectrum in normal-metal(N)/d-wave superconductor(S) junction by applying a Zeeman magnetic field to the S. It is shown that: (1) the Zeeman magnetic field can lead to the S gap decreasing, and with the increase in Zeeman energy, the superconducting state is changed to the normal state, exhibiting a first-order phase transition; (2) the Zeeman magnetic field may make the zero-bias conductance peak split into two peaks, and the energy difference between the two splitting peaks in the conductance spectrum is equal to 2h0 (h0 is the Zeeman energy); (3) both the barrier strength of interface scattering and the temperature can lower the magnitudes of splitting peaks, of which the barrier strength can lead to the splitting peaks becoming sharp and the temperature can smear out the peaks, however, neither of them can influence the Zeeman effect.
文摘In this communication, we report about the influence of barrier U1, formed by magnetic layer (Zn0.9Be0.05Mn0.05Se) and changed by extending magnetic field due to Zeeman effect on the ground state energy of electron in nanoheterostructure Zn0.943Be0.057Se-ZnSe-Zn0.943Be0.057Se-Zn0.9Be0.05Mn0.05Se. The investigations were also carried out for different width of unmagnetic layer (Zn0.943Be0.057Se), with which such structures were prepared. The results point on decreasing of the ground state energy with magnetic field increasing. The unmagnetic layer width does not change essentially the energy of electrons in strong fields. In small fields, it is shown that the electron energy does not always depend on the extended field. These cases are also dependent on non magnetic layer width. The received dependences are in qualitative agreement with the experiment data on photoluminescence spectra.
