Characterization of the ground X{sub 1} state of {sup 204}Pb{sup 19}F, {sup 206}Pb{sup 19}F, {sup 207}Pb{sup 19}F, and {sup 208}Pb{sup 19}F

Journal Article · Mon Aug 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.022508· OSTI ID:22075464

Mawhorter, Richard J; Murphy, Benjamin S; Baum, Alexander L; Sears, Trevor J; Yang, T; Rupasinghe, P M; McRaven, C P; Shafer-Ray, N E; Alphei, Lukas D; Grabow, Jens-Uwe ^[1]

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1. Department of Physics and Astronomy, Pomona College, Claremont, California 91711-6327 (United States)

Pure rotational spectra of the ground electronic-vibrational X{sub 1} state of {sup 204}Pb{sup 19}F, {sup 206}Pb{sup 19}F, {sup 207}Pb{sup 19}F, and {sup 208}Pb{sup 19}F are measured with a resonator pulsed supersonic jet Fourier-transform microwave spectrometer. Also reported is a new measurement of the Stark effect on the optical spectra of A(leftarrow)X{sub 1} transitions. These spectra are combined with published high-resolution infrared spectra of X{sub 2}{r_reversible}X{sub 1} transitions in order to create a complete picture of the ground state of lead monofluoride. For the microwave data, molecules are prepared by laser ablation of lead target rods and stabilized in a supersonic jet of neon mixed with sulfur hexafluoride. For the optical Stark spectra, a continuous source of molecules is created in a nozzle heated to 1000 deg. C. The microwave spectra confirm, improve, and extend previously reported constants that describe the rotational, spin-orbit, and hyperfine interactions of the ground electronic state of the PbF molecule. A discrepancy concerning the sign of the hyperfine constant describing the {sup 207}Pb nucleus is discussed. Magnetic-field-dependent microwave spectra are used to characterize the Zeeman interaction in terms of two g factors of the body-fixed electronic wave function. The optical Stark spectra are used to characterize the electric dipole moment of the X{sub 1} and A states.

• OSTI ID: 22075464
• Journal Information: Physical Review. A, Vol. 84, Issue 2; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ELECTRIC DIPOLE MOMENTS
FLUORINE 19
FOURIER TRANSFORMATION
GROUND STATES
INFRARED SPECTRA
LANDE FACTOR
LEAD 204
LEAD 206
LEAD 207
LEAD 208
MAGNETIC FIELDS
MICROWAVE SPECTRA
NEON
RESONATORS
SPECTROMETERS
SPIN
STARK EFFECT
SULFUR
WAVE FUNCTIONS
ZEEMAN EFFECT