Time-resolved soft-x-ray spectroscopy of a magnetic octupole transition in nickel-like xenon, cesium, and barium ions
Time-resolved soft-x-ray spectroscopy of a magnetic octupole transition in nickel-like xenon, cesium, and barium ions
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DOI：
10.1103/physreva.73.022508
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发表时间：
2005-11
期刊：
影响因子：
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通讯作者：
E. Träbert;P. Beiersdorfer;G. Brown;K. Boyce;R. Kelley;C. Kilbourne;F. Porter;A. Szymkowiak
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文献类型：
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作者：
E. Träbert;P. Beiersdorfer;G. Brown;K. Boyce;R. Kelley;C. Kilbourne;F. Porter;A. Szymkowiak
具有时间分辨软X射线光谱事件模式能力的微量热计和高分辨率平场EUV光谱仪已在利弗莫尔EBIT-I电子束离子阱用于观察和波长测量的M1，E2，和M3衰变的长寿命水平在Ni类离子的Ni 2 +{sup 26+}，Cs{sup 27+}，和Ba{sup 28+}。特别令人感兴趣的是最低的激发能级，3d{sup 9}4s {sup 3}D{sub 3}，它只能通过磁八极（M3）跃迁衰变。测得该能级的激发能为（590.40 ± 0.03 eV），能级寿命为（11.5 ± 0.5 ms）。
A microcalorimeter with event mode capability for time-resolved soft-x-ray spectroscopy, and a high-resolution flat-field EUV spectrometer have been employed at the Livermore EBIT-I electron beam ion trap for observations and wavelength measurements of M1, E2, and M3 decays of long-lived levels in the Ni-like ions Xe{sup 26+}, Cs{sup 27+}, and Ba{sup 28+}. Of particular interest is the lowest excited level, 3d{sup 9}4s {sup 3}D{sub 3}, which can only decay via a magnetic octupole (M3) transition. For this level in Xe an excitation energy of (590.40 {+-} 0.03eV) and a level lifetime of (11.5 {+-} 0.5 ms) have been determined.