Helium-like titanium x-ray spectrum as a probe of QED computation

被引：17

作者：

Payne, A. T. ^{[1
]}

Chantler, C. T. ^{[1
]}

Kinnane, M. N. ^{[1
,2
]}

Gillaspy, J. D. ^{[2
]}

Hudson, L. T. ^{[2
]}

Smale, L. F. ^{[1
]}

Henins, A. ^{[2
]}

Kimpton, J. A. ^{[3
]}

Takacs, E. ^{[4
,5
]}

机构：

[1] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia

[2] NIST, Gaithersburg, MD 20899 USA

[3] Australian Synchrotron, Melbourne, Vic 3000, Australia

[4] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA

[5] Univ Debrecen, Expt Phys Dept, H-4026 Debrecen, Hungary

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2014年 / 47卷 / 18期

关键词：

helium-like; QED; x-ray spectroscopy; titanium; EBIT; BEAM ION-TRAP; FUNDAMENTAL PHYSICAL CONSTANTS; CODATA RECOMMENDED VALUES; BRAGG GEOMETRY; BENT CRYSTALS; DIFFRACTION;

D O I：

10.1088/0953-4075/47/18/185001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss the first absolute energy measurements of the intercombination and forbidden transitions (x, y, z) in trapped Ti20+ ions to 15 parts per million accuracy. We present new measurements on helium-like titanium, in which the orbital radius is reduced and QED terms are magnified by the increased nuclear charge. The measured transition energies are higher than predicted.

引用

页数：8

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