MEASUREMENTS OF 3D-5F AND 3D-6F TRANSITION ENERGIES IN NICKEL-LIKE IONS FOR RESONANT PHOTOPUMPING BY HELIUM-LIKE IONS

被引：9

作者：

ELLIOTT, S

BEIERSDORFER, P

NILSEN, J

机构：

[1] University of California, Lawrence Livermore National Laboratory, Livermore, CA

来源：

PHYSICA SCRIPTA | 1994年 / 49卷 / 05期

关键词：

D O I：

10.1088/0031-8949/49/5/009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The 3d-5f and 3d-6f transition energies of several Ni-like ions were measured to study their suitability for use in an X-ray laser scheme that uses He-like K-shell transitions for resonant photopumping. Specifically, 19 transitions in Ag19+, Sn22+, Pr31+, Gd36+, Yb42+, Ta45+, Ir49+, Th62+ and U64+ were measured and compared to 2p-1s transitions in F7+, Ne8+, Si12+, S14+, Cl15+, Ar16+, Ti20+ and V21+. The best resonance found was for the F He-like 2P-1(1)-1S-1(0) transition pumping the Ag Ni-like 3d3/2-6f5/2 transition at 737.6 eV. The energy difference of 0.14 (24) eV corresponds to a 190-ppm resonance. An energy shift between the theoretical and measured energies of 3d5/2-6f7/2 transitions is confirmed by the present measurements; a similar effect is also observed in the 3d3/2-5f5/2, 3d5/2-5f7/2 and 3d3/2-6f5/2 transitions.

引用

页码：556 / 560

页数：5

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