Spectroscopy of berylliumlike xenon ions using dielectronic recombination
Spectroscopy of berylliumlike xenon ions using dielectronic recombination
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DOI：
10.1088/0953-4075/48/14/144008
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发表时间：
2015-05
期刊：
影响因子：
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通讯作者：
D. Bernhardt;C. Brandau;Z. Harman;C. Kozhuharov;S. Böhm;F. Bosch;S. Fritzsche;J. Jacobi;S. Kieslich;H. Knopp;F. Nolden;W. Shi;Z. Stachura;M. Steck;T. Stöhlker;S. Schippers;A. Müller
中科院分区：
文献类型：
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作者：
D. Bernhardt;C. Brandau;Z. Harman;C. Kozhuharov;S. Böhm;F. Bosch;S. Fritzsche;J. Jacobi;S. Kieslich;H. Knopp;F. Nolden;W. Shi;Z. Stachura;M. Steck;T. Stöhlker;S. Schippers;A. Müller
Be-like 136 Xe 50 + ？利用介电子复合（DR）的共振电子-离子碰撞过程作为光谱学工具，对b>离子进行了研究。实验是在德国达姆施塔特的实验存储环中进行的，使用其电子冷却器作为自由电子的目标。DR Rydberg共振系列2 s 2 + e−→2 s 2 p j ' nl j ？>为相关的l -壳层跃迁2s21s0−2s2p1 / 23p1, 2s21s0−2s2p3 / 23p2 ？>和2 s 2 1 s 0−2 s 2 p 3 / 2 1 p 1 ？>以高分辨率观察。除了这些来自基态的激发外，我们还确定了与激发2s 2p1 / 23p3 0→2p1 / 23p3 / 23p1 ？最初在亚稳态2 s 2 p 1 / 2 3 p 0 ？>状态。对应的激发能为E (1 S 0→3 P 1) = 127.269 (46) eV, ？> E (1 S 0→3 P 2) = 469.474 (81) eV ？>和E (1 S 0→1 P 1) = 532.801 (16) eV, ？>和E (3p 0→2p 1 / 2p 3 / 2p 1) = 533.733 (22) eV ？>。这些激发能与以前的测量和最近最先进的原子结构计算进行了比较。
Be-like 136 Xe 50 + ?> ions have been investigated employing the resonant electron–ion collision process of dielectronic recombination (DR) as a spectroscopic tool. The experiments were performed at the experimental storage ring in Darmstadt, Germany, using its electron cooler as a target for free electrons. DR Rydberg resonance series 2 s 2 + e − → 2 s 2 p j ′ nl j ?> for the associated intra-L-shell transitions 2 s 2 1 S 0 − 2 s 2 p 1 / 2 3 P 1 , 2 s 2 1 S 0 − 2 s 2 p 3 / 2 3 P 2 ?> and 2 s 2 1 S 0 − 2 s 2 p 3 / 2 1 P 1 ?> were observed with high resolution. In addition to these excitations from the ground state we determined resonances associated with excitations 2 s 2 p 1 / 2 3 P 0 → 2 p 1 / 2 2 p 3 / 2 3 P 1 ?> of ions initially in the metastable 2 s 2 p 1 / 2 3 P 0 ?> state. The corresponding excitation energies were determined to be E ( 1 S 0 → 3 P 1 ) = 127.269 ( 46 ) eV , ?> E ( 1 S 0 → 3 P 2 ) = 469.474 ( 81 ) eV ?> and E ( 1 S 0 → 1 P 1 ) = 532.801 ( 16 ) eV , ?> and E ( 3 P 0 → 2 p 1 / 2 2 p 3 / 2 3 P 1 ) = 533.733 ( 22 ) eV ?> . These excitation energies are compared with previous measurements and with recent state-of-the-art atomic structure calculations.