用于指导仲氢诱导核极化状态保存的己烯分子中五自旋的单重态制备和寿命研究

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慈杰,杨雪,辛家祥,魏达秀,姚叶锋

Preparation and Lifetime Studies of the Singlet State of Five Spins in Hexene Molecules Used to Guide the Preservation of the Parahydrogen-induced Nuclear Polarization State

CI Jie,YANG Xue,XIN Jiaxiang,WEI Daxiu,YAO Yefeng

图2 制备和检测单重态所用的优化脉冲的幅度，相位及对应的脉冲序列.(a₁)、(c₁)、(e₁)分别为幺正变换 ${{U}_{\text{bc}}}$ 、 ${{U}_{\text{ac}}}$ 、 ${{U}_{\text{ab}}}$ 对应脉冲的幅度；(a₂)、(c₂)、(e₂)分别为幺正变换 ${{U}_{\text{bc}}}$ 、 ${{U}_{\text{ac}}}$ 、 ${{U}_{\text{ab}}}$ 对应脉冲的相位；(b₁)、(d₁)、(f₁)分别为幺正变换 ${{{U}'}_{\text{bc}}}$ 、 ${{{U}'}_{\text{ac}}}$ 、 ${{{U}'}_{\text{ab}}}$ 对应脉冲的幅度；(b₂)、(d₂)、(f₂)分别为幺正变换 ${{{U}'}_{\text{bc}}}$ 、 ${{{U}'}_{\text{ac}}}$ 、 ${{{U}'}_{\text{ab}}}$ 对应脉冲的相位；(g)为实验所用的优化脉冲序列

Fig. 2 The amplitudes and phases of different optimal control pulses, and the pulse sequence for the experiments. (a₁), (c₁), (e₁) are the amplitudes of unitary transformation ${{U}_{\text{bc}}}$ , ${{U}_{\text{ac}}}$ , ${{U}_{\text{ab}}}$ , respectively. (a₂), (c₂), (e₂) are the phases of unitary transformation ${{U}_{\text{bc}}}$ , ${{U}_{\text{ac}}}$ , ${{U}_{\text{ab}}}$ , respectively. (b₁), (d₁), (f₁) are the amplitudes of unitary transformation ${{{U}'}_{\text{bc}}}$ , ${{{U}'}_{\text{ac}}}$ , ${{{U}'}_{\text{ab}}}$ , respectively. (b₂), (d₂), (f₂) are the phases of unitary transformation ${{{U}'}_{\text{bc}}}$ , ${{{U}'}_{\text{ac}}}$ , ${{{U}'}_{\text{ab}}}$ , respectively. (g) The experimental pulse sequence