0000000000240303
AUTHOR
W.a. Kreiner
Double-modulation sideband spectroscopy: μ0 and μ33 of silicon tetrafluoride
Abstract The linear Stark effect in the ν 3 fundamental of 28 SiF 4 has been investigated with IR-IR double resonance employing CO 2 laser sidebands at microwave modulation frequencies. The frequencies needed for the double-resonance experiment were generated from one laser line by a novel double-modulation technique. As a result, the parameter of the vibration-induced dipole moment was determined to μ 33 = −0.10288(56) D. For the centrifugal distortion moment in the ν 3 excited state the value μ 0 = 6.06(36) × 10 −7 D was found. From the Stark splitting in the vibrational ground state, μ 0 = 6.81(10) × 10 −7 was determined.
29SiH4 and 30SiH4: Dipole moment parameters of the dyad from Stark effect observations with laser sidebands
Abstract The linear Stark effect within the ν 2 ν 4 dyad of 29SiH4 and 30SiH4 has been investigated by applying the infrared sideband technique at microwave modulation frequencies. Two vibration-induced dipole moment parameters have been measured for each isotopomer on natural abundance samples.
Double modulation sideband spectroscopy: μ0, μ24, and μ44 of 28SiH4
Abstract The linear Stark effect within the ν 2 ν 4 dyad of the main isotopomer of silane, 28 SiH 4 , has been investigated by applying the saturation technique as well as IR-IR double resonance. From 35 transitions, two vibration-induced dipole moment parameters and the centrifugal distortion moment have been determined as μ 0 = 1.357(12) × 10 −5 D, μ 24 = 2.391(31) × 10 −2 D, and μ 44 = −1.261(17) × 10 −2 D employing the Stark coefficients calculated by the procedure of Loete.