Electron-ion recombination of Be-like ^(40)Ar^(14)+has been measured by employing the electron-ion merged-beams method at the cooler storage ring CSRm.The measured absolute recombination rate coefficients for collisio...Electron-ion recombination of Be-like ^(40)Ar^(14)+has been measured by employing the electron-ion merged-beams method at the cooler storage ring CSRm.The measured absolute recombination rate coefficients for collision energies from 0 to 60 eV are presented in Fig.1,covering all dielectronic recombination(DR)resonances associated with 2s^(2)→2s2p core transitions.In addition,strong trielectronic recombination(TR)resonances associated with 2s^(2)→2p^(2) core transitions were observed.Both DR and TR processes lead to series of peaks in the measured recombination spectrum,which have been identified by the Rydberg formula.Theoretical calculations of recombination rate coefficients were performed using the state-of-the-art multi-configuration Breit-Pauli(MCBP)atomic structure code AUTOSTRUCTURE to compare with the experimental results.The plasma rate coefficients for DR+TR of Ar14+were deduced from the measured electron-ion recombination rate coefficients in the temperature range from 10^(3) to 10^(7) K,and compared with calculated data from the literature.展开更多
基金National Natural Science Foundation of China(11320101003,91336102)。
文摘Electron-ion recombination of Be-like ^(40)Ar^(14)+has been measured by employing the electron-ion merged-beams method at the cooler storage ring CSRm.The measured absolute recombination rate coefficients for collision energies from 0 to 60 eV are presented in Fig.1,covering all dielectronic recombination(DR)resonances associated with 2s^(2)→2s2p core transitions.In addition,strong trielectronic recombination(TR)resonances associated with 2s^(2)→2p^(2) core transitions were observed.Both DR and TR processes lead to series of peaks in the measured recombination spectrum,which have been identified by the Rydberg formula.Theoretical calculations of recombination rate coefficients were performed using the state-of-the-art multi-configuration Breit-Pauli(MCBP)atomic structure code AUTOSTRUCTURE to compare with the experimental results.The plasma rate coefficients for DR+TR of Ar14+were deduced from the measured electron-ion recombination rate coefficients in the temperature range from 10^(3) to 10^(7) K,and compared with calculated data from the literature.
