arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0812.2670physics.atom-phphysics.chem-ph
收藏

EDM搜索电子的HfF $^+$的理论研究

Theoretical study of HfF$^+$ for the electron EDM search

A. N. Petrov, N. S. Mosyagin, A. V. Titov

摘要:

本文报道了重过渡金属氟化物HfF $^+$的十个低电子态的势能曲线和电偶极跃迁矩、电子上的有效电场、阳离子$^3Δ_1$态的超精细常数和辐射寿命的从头算相关计算。实验结果表明,HfFPDMATHABMN具有深束缚的$^1Σ^+$基态;其离解能为$D_e=6.4$ eV。获得的$^3Δ_1$状态是相对长寿命的,其寿命等于约0.4秒,第一激发态高出约0.2 eV。计算出的作用于处于这种状态的电子的有效电场$E_{eff}=W_d|Ω|$为$5.84*10^{24} Hz/{e*cm}$。所得到的超精细常数为:$^{177}$ Hf核的$A_{\parallel}= -1239$ MHz和$^{19}$ F核的$A_{\parallel}= -58.1$ MHz。

英文摘要:

We report ab initio relativistic correlation calculations of potential curves and electric dipole transition moments for ten low-lying electronic states, effective electric field on the electron, hyperfine constants and radiative lifetimes for the $^3Δ_1$ state of cation of the heavy transition metal fluoride HfF$^+$, which it is suggested to be used in experiments to search for the electric dipole moment of the electron. It is obtained that HfF$^+$ has deeply bound $^1Σ^+$ ground state; its dissociation energy is $D_e=6.4$ eV. The $^3Δ_1$ state is obtained as the relatively long-lived, with lifetime equal to about 0.4 s.,first excited state lying about 0.2 eV higher. The calculated effective electric field, $E_{eff}=W_d|Ω|$, acting on an electron in this state is $5.84*10^{24} Hz/{e*cm}$. The obtained hyperfine constants are $A_{\parallel}= -1239$ MHz for the $^{177}$Hf nucleus and $A_{\parallel}= -58.1$ MHz for the $^{19}$F nucleus.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑