Measurement of doubly excited levels in lithiumlike and berylliumlike cobalt

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.51.2808· OSTI ID:6584560

Smith, A J; Beiersdorfer, P; Decaux, V; Widmann, K; Osterheld, A; Chen, M ^[1]

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1. Department of Physics, Morehouse College, Atlanta, Georgia 30314 (United States) Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

We have measured the dielectronic satellite spectrum for heliumlike Co XXVI trapped and excited in an electron-beam ion trap using a high-resolution x-ray spectrometer in the von Hamos geometry. By sweeping the electron-beam energy across the individual dielectronic recombination resonances, we have determined the relative resonance strengths of the strongest resonances populating doubly excited levels in lithiumlike and berylliumlike cobalt. Most measured dielectronic satellite strengths compare well with theory. A discrepancy with theoretical values is noted for the resonance strength associated with levels (1[ital s][sub 1/2]2[ital p][sub 3/2][sup 2])[sub 3/2] and (1[ital s][sub 1/2]2[ital s][sub 1/2]2[ital p][sub 1/2])[sub 1/2]. Their values of 49.8[plus minus]3.2[times]10[sup [minus]20] cm[sup 2] eV and 22.9[plus minus]6.4[times]10[sup [minus]20] cm[sup 2] eV, respectively, are almost twice the size predicted by theory.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6584560
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 50:4; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664400* -- Experimentally Derived Information on Atomic & Molecular Properties-- (1992-)
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700320 -- Plasma Diagnostic Techniques & Instrumentation-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ALKALINE EARTH METALS
ATMOSPHERES
ATOMS
BERYLLIUM
CHARGED PARTICLES
CHEMICAL ANALYSIS
COBALT
ELEMENTS
ENERGY LEVELS
EXCITED STATES
IONS
ISOELECTRONIC ATOMS
LITHIUM
MANY-BODY PROBLEM
METALS
MULTICHARGED IONS
NONDESTRUCTIVE ANALYSIS
PLASMA
RECOMBINATION
RESONANCE
SOLAR ATMOSPHERE
SOLAR CORONA
STELLAR ATMOSPHERES
STELLAR CORONAE
TRANSITION ELEMENTS
TRAPPING
TWO-BODY PROBLEM
X-RAY EMISSION ANALYSIS