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Title: Quantum Electrodynamics in Strong Electric Fields: The Ground-State Lamb Shift in Hydrogenlike Uranium

Abstract

X-ray spectra following radiative recombination of free electrons with bare uranium ions (U{sup 92+}) were measured at the electron cooler of the ESR storage ring. The most intense lines observed in the spectra can be attributed to the characteristic Lyman ground-state transitions and to the recombination of free electrons into the K shell of the ions. Our experiment was carried out by utilizing the deceleration technique which leads to a considerable reduction of the uncertainties associated with Doppler corrections. This, in combination with the 0 deg. observation geometry, allowed us to determine the ground-state Lamb shift in hydrogenlike uranium (U{sup 91+}) from the observed x-ray lines with an accuracy of 1%. The present result is about 3 times more precise than the most accurate value available up to now and provides the most stringent test of bound-state quantum electrodynamics for one-electron systems in the strong-field regime.

Authors:
; ;  [1];  [2]; ; ; ; ; ; ; ; ; ;  [1];  [3];  [4]
  1. Gesellschaft fuer Schwerionenforschung, 64291 Darmstadt (Germany)
  2. Institute of Physics Swietokrzyska Academy, 25-406 Kielce (Poland)
  3. Institute of Modern Physics, 730000 Lanzhou (China)
  4. Institute of Physics, Jagiellonian University, 30-059 Cracow (Poland)
Publication Date:
OSTI Identifier:
20696354
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 94; Journal Issue: 22; Other Information: DOI: 10.1103/PhysRevLett.94.223001; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ACCURACY; BOUND STATE; CATIONS; CORRECTIONS; DOPPLER EFFECT; ELECTRIC FIELDS; ELECTRON-ATOM COLLISIONS; ELECTRONS; ESR STORAGE RING; GROUND STATES; K SHELL; LAMB SHIFT; MULTICHARGED IONS; QUANTUM ELECTRODYNAMICS; RECOMBINATION; URANIUM IONS; X-RAY SPECTRA

Citation Formats

Gumberidze, A, Stoehlker, Th, Tashenov, S, Institut fuer Kernphysik, University of Frankfurt, 60486 Frankfurt, Banas, D, Beckert, K, Beller, P, Beyer, H F, Bosch, F, Hagmann, S, Kozhuharov, C, Liesen, D, Nolden, F, Mokler, P H, Steck, M, Ma, X, and Sierpowski, D. Quantum Electrodynamics in Strong Electric Fields: The Ground-State Lamb Shift in Hydrogenlike Uranium. United States: N. p., 2005. Web. doi:10.1103/PhysRevLett.94.223001.
Gumberidze, A, Stoehlker, Th, Tashenov, S, Institut fuer Kernphysik, University of Frankfurt, 60486 Frankfurt, Banas, D, Beckert, K, Beller, P, Beyer, H F, Bosch, F, Hagmann, S, Kozhuharov, C, Liesen, D, Nolden, F, Mokler, P H, Steck, M, Ma, X, & Sierpowski, D. Quantum Electrodynamics in Strong Electric Fields: The Ground-State Lamb Shift in Hydrogenlike Uranium. United States. https://doi.org/10.1103/PhysRevLett.94.223001
Gumberidze, A, Stoehlker, Th, Tashenov, S, Institut fuer Kernphysik, University of Frankfurt, 60486 Frankfurt, Banas, D, Beckert, K, Beller, P, Beyer, H F, Bosch, F, Hagmann, S, Kozhuharov, C, Liesen, D, Nolden, F, Mokler, P H, Steck, M, Ma, X, and Sierpowski, D. 2005. "Quantum Electrodynamics in Strong Electric Fields: The Ground-State Lamb Shift in Hydrogenlike Uranium". United States. https://doi.org/10.1103/PhysRevLett.94.223001.
@article{osti_20696354,
title = {Quantum Electrodynamics in Strong Electric Fields: The Ground-State Lamb Shift in Hydrogenlike Uranium},
author = {Gumberidze, A and Stoehlker, Th and Tashenov, S and Institut fuer Kernphysik, University of Frankfurt, 60486 Frankfurt and Banas, D and Beckert, K and Beller, P and Beyer, H F and Bosch, F and Hagmann, S and Kozhuharov, C and Liesen, D and Nolden, F and Mokler, P H and Steck, M and Ma, X and Sierpowski, D},
abstractNote = {X-ray spectra following radiative recombination of free electrons with bare uranium ions (U{sup 92+}) were measured at the electron cooler of the ESR storage ring. The most intense lines observed in the spectra can be attributed to the characteristic Lyman ground-state transitions and to the recombination of free electrons into the K shell of the ions. Our experiment was carried out by utilizing the deceleration technique which leads to a considerable reduction of the uncertainties associated with Doppler corrections. This, in combination with the 0 deg. observation geometry, allowed us to determine the ground-state Lamb shift in hydrogenlike uranium (U{sup 91+}) from the observed x-ray lines with an accuracy of 1%. The present result is about 3 times more precise than the most accurate value available up to now and provides the most stringent test of bound-state quantum electrodynamics for one-electron systems in the strong-field regime.},
doi = {10.1103/PhysRevLett.94.223001},
url = {https://www.osti.gov/biblio/20696354}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 22,
volume = 94,
place = {United States},
year = {Fri Jun 10 00:00:00 EDT 2005},
month = {Fri Jun 10 00:00:00 EDT 2005}
}