Journal article

Publication year: 2017

Journal: Journal of Physics B: Atomic, Molecular and Optical Physics

Volume number: 50

Issue number: 5

ISSN: 0953-4075

eISSN: 1361-6455

Open access status: Hybrid

DOI Link: https://doi.org/10.1088/1361-6455/50/5/055603

Publisher: IOP Publishing

Abstract: 
Quantum electrodynamics in very strong Coulomb fields is one scope which has not yet been tested experimentally with sufficient accuracy to really determine whether the perturbative approach is valid. One sensitive test is the determination of the 1s Lamb shift in highly-charged very heavy ions. The 1s Lamb shift of hydrogen-like lead (Pb81+) and gold (Au78+) has been determined using the novel detector concept of silicon microcalorimeters for the detection of hard x-rays. The results of (260 +/- 53) eV for lead and (211 +/- 42) eV for gold are within the error bars in good agreement with theoretical predictions. To our knowledge, for hydrogen-like lead, this represents the most accurate determination of the 1s Lamb shift.

Harvard Citation style: Kraft-Bermuth, S., Andrianov, V., Bleile, A., Echler, A., Egelhof, P., Grabitz, P., et al. (2017) Precise determination of the 1s Lamb shift in hydrogen-like lead and gold using microcalorimeters, Journal of Physics B: Atomic, Molecular and Optical Physics, 50(5), Article 055603. https://doi.org/10.1088/1361-6455/50/5/055603

APA Citation style: Kraft-Bermuth, S., Andrianov, V., Bleile, A., Echler, A., Egelhof, P., Grabitz, P., Ilieva, S., Kiselev, O., Kilbourne, C., McCammon, D., Meier, J., & Scholz, P. (2017). Precise determination of the 1s Lamb shift in hydrogen-like lead and gold using microcalorimeters. Journal of Physics B: Atomic, Molecular and Optical Physics. 50(5), Article 055603. https://doi.org/10.1088/1361-6455/50/5/055603