Measurement of the L sub 2 - L sub 3 Coster-Kronig transition probability in Nd( Z =60)

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Physical Review, A (General Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevA.41.271· OSTI ID:6982141

Catz, A L; Meyers, M F ^[1]

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1. University of Massachusetts at Boston, Boston, Massachusetts 02125 (US)

The {ital L}{sub 2}-{ital L}{sub 3} Coster-Kronig transition probability {ital f}{sub 23} in Nd was measured using multiparameter {ital K}-vs-{ital L} x-ray coincidence techniques. The Nd x rays were obtained from a radioactive source of {sup 145}Pm. High-energy-resolution germanium and silicon detectors were used to detect the {ital K} and {ital L} x rays, respectively. A method is described to correct for the very important contribution of {ital K}{alpha}{sub 1} x rays to the {ital K}{alpha}{sub 2} x-ray peak as well as for the small contribution of {ital K}{alpha}{sub 2} x rays to the {ital K}{alpha}{sub 1} x-ray peak. The contribution of {ital L}{eta} x rays to the measured {ital K}{alpha}{sub 2}-({ital L}{alpha}+{ital L}{eta}) coincidences was calculated and subtracted. The value obtained, {ital f}{sub 23}=0.146{plus minus}0.005, is lower than that predicted (0.170) by the latest theoretical calculations, confirming a trend of deviations from theory recently observed in atoms of higher atomic number. It differs, however, from another recently reported value of 0.123{plus minus}0.013.

• OSTI ID: 6982141
• Journal Information: Physical Review, A (General Physics); (USA), Journal Name: Physical Review, A (General Physics); (USA) Vol. 41:1; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
AUGER EFFECT
COINCIDENCE METHODS
COSTER-KRONIG TRANSITIONS
COUNTING TECHNIQUES
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY-LEVEL TRANSITIONS
K SHELL
L SHELL
METALS
MULTILEVEL ANALYSIS
NEODYMIUM
RARE EARTHS
SPECTRA
X-RAY SPECTRA