Nuclear quadrupole interaction of {sup 243}Am{sup 3+} in LaCl{sub 3} measured via optical spectral-hole burning

Journal Article · Thu Feb 01 04:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.53.2385· OSTI ID:285354

Liu, G K; Cao, R; Beitz, J V ^[1]

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1. Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

An optical spectral-hole burning technique has been used to study the nuclear quadrupole splitting in the ground state of {sup 243}Am{sup 3+} in LaCl{sub 3}. The observed splitting is consistent with Am{sup 3+} ions on an axially symmetric site. The nuclear quadrupole coupling constant {ital P}={minus}75{plus_minus}1 MHz for the {sup 7}{ital F}{sub 0} ground state is obtained based on an effective operator Hamiltonian. The crystal-field antishielding effect dominates whereas contributions from the 5{ital f} electrons and from the pseudoquadrupole interaction are negligible ({ital P}{sub 5{ital f}}/{ital P}{sub latt}=0.03). The Sternheimer antishielding factor, {gamma}{sub {infinity}}={minus}154, is determined and comparison is made between the actinide ion Am{sup 3+} and its rare-earth analogy Eu{sup 3+}. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 285354
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 5 Vol. 53; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
AMERICIUM 243
AMERICIUM IONS
CRYSTAL FIELD
ENERGY-LEVEL SPLITTING
GROUND STATES
HOLE BURNING
LANTHANUM CHLORIDES
NUCLEAR QUADRUPOLE RESONANCE
OPTICAL PROPERTIES
QUADRUPOLE INTERACTIONS
QUADRUPOLE MOMENTS
STERNHEIMER FORMULA