Measurement of the 1s Lamb shift in hydrogenlike chlorine

Journal Article · Tue May 01 04:00:00 EDT 1984 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.29.2939· OSTI ID:6813306

Richard, P; Stockli, M; Deslattes, R D; Cowan, P; LaVilla, R E; Johnson, B; Jones, K; Meron, M; Mann, R; Schartner, K

The 1s Lamb shift in hydrogenlike chlorine has been determined from a precision measurement of the 2p/sub 3/2/-1s/sub 1/2/(Ly..cap alpha../sub 1/) and 2p/sub 1/2/-1s/sub 1/2/(Ly..cap alpha../sub 2/) x-ray transitions using beam-foil excitation. The x rays are emitted from high-velocity chlorine-ion beams at several ion velocities produced by a Van de Graaff accelerator. The 1s Lamb shifts obtained from the Ly..cap alpha../sub 1/ and Ly..cap alpha../sub 2/ measurements are 0.84(12) and 0.90(10) eV, respectively, compared with a calculated value of 0.9384(6) eV. The fine-structure splitting of the 2p level was also determined in this experiment and found to be 3.889(30) eV compared with a theoretical value of 3.827 18(2) eV. A precision measurement of the Ar K..cap alpha.. x rays was made in order to establish the energy scale for Cl Ly..cap alpha.. x rays. The newly determined energies are 2957.813(8), 2955.684(13), and 2977.51(6) eV for the K..cap alpha../sub 1/, K..cap alpha../sub 2/, and K..cap alpha../sub 4/ energies, respectively.

• Research Organization: Kansas State University, Manhattan, Kansas 66506
• OSTI ID: 6813306
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 29:5; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGED PARTICLES
CHEMICAL ANALYSIS
CHLORINE IONS
DOPPLER EFFECT
ELECTRONIC STRUCTURE
ION SPECTROSCOPY
IONS
K SHELL
LAMB SHIFT
LYMAN LINES
MULTICHARGED IONS
NONDESTRUCTIVE ANALYSIS
SPECTRAL SHIFT
SPECTROSCOPY
X-RAY EMISSION ANALYSIS