Molecular Beam Electric Resonance Spectrum of31P14N

1971 ◽  
Vol 55 (1) ◽  
pp. 232-233 ◽  
Author(s):  
John Raymonda ◽  
William Klemperer
Keyword(s):  
Molecular Beam ◽  
Resonance Spectrum ◽  
Electric Resonance

The molecular beam electric resonance spectrum of OPF3

1979 ◽  
Vol 57 (8) ◽  
pp. 1163-1173 ◽  
Author(s):  
W. Leo Meerts ◽  
Irving Ozier ◽  
Antoni Dymanus
Keyword(s):  
Molecular Beam ◽  
Stark Effect ◽  
Resonance Spectrum ◽  
Rotational Temperature ◽  
Resonance Method ◽  
Partition Functions ◽  
Vibrational States ◽  
Electric Resonance ◽  
Magnetic Resonance Data ◽  
Beam Technique

The molecular-beam electric resonance spectrum of phosphoryl fluoride (16OPF3) has been investigated. A hyperfine study of (K = 0) multiplets has been combined with earlier magnetic resonance data and chemical shift arguments to obtain four spin–rotation constants and two tensor spin–spin constants. The results (in kHz) are: [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], dFF = −2.3(9), and dFF = 4.1(9). A study of molecular magnetic effects has yielded the two molecular g-factors [Formula: see text] and [Formula: see text] as well as the anisotropy in the susceptibility [Formula: see text]. The molecular quadrupole moment has been calculated. From a study of the Stark effect, the electric dipole moment has been determined for the ground vibrational state and for the (ν5 = 1) and (ν6 = 1) fundamentals. The results are: μ = 1.86847(10) D, (μ5 − μ)/μ = −3.49(4) × 10−3, and (μ6 − μ)/μ = −0.65(4) × 10−3. For each of these two excited vibrational states, the l-doubling constants qt, and DqJ(t) (t = 5,6) have been obtained. This work demonstrates that the molecular beam electric resonance method can be applied to symmetric tops with relatively large room temperature rotational partition functions by reducing the rotational temperature to a few degrees kelvin with the seeded beam technique.

Anomalous transitions in two-level systems driven by the ac Stark effect

2001 ◽  
Vol 79 (2-3) ◽  
pp. 533-545 ◽  
Author(s):  
W L Meerts ◽  
I Ozier ◽  
J T Hougen
Keyword(s):  
Molecular Beam ◽  
Stark Effect ◽  
Electric Resonance ◽  
Avoided Crossing ◽  
Different Types ◽  
Two Level Systems ◽  
Experimental Findings ◽  
Ac Stark Effect ◽  
Unusual Type ◽  
Good Agreement

An unusual type of nonresonant absorption signal produced by the ac Stark effect has been observed in a two-level avoided-crossing system. The theory for these anomalous transitions has been developed. The nonresonant signals have been shown to be caused by the perturbation by the oscillating field of the dephasing of the two-level system at the avoided crossing. A series of measurements of these anomalous transitions has been carried out using the avoided-crossing molecular-beam electric-resonance technique. In addition, different types of resonant multiphoton transitions have been investigated. Results are reported for the AE-barrier anticrossing with J = 1 in CH3SiH3. The experimental findings are in good agreement with the theory developed. PACS Nos.: 33.20Bx, 33.80Be, 42.50Hz

Hyperfine Structure of 7Li79,81Br by Molecular‐Beam Electric Resonance

1972 ◽  
Vol 56 (2) ◽  
pp. 855-861 ◽  
Author(s):  
R. C. Hilborn ◽  
T. F. Gallagher ◽  
N. F. Ramsey
Keyword(s):  
Hyperfine Structure ◽  
Molecular Beam ◽  
Electric Resonance
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