ROTATIONAL SPECTRA OF TIF BY THE MOLECULAR BEAM ELECTRIC RESONANCE METHOD

1965 ◽  
Vol 43 (10) ◽  
pp. 1701-1705 ◽  
Author(s):  
R. K. Ritchie ◽  
H. Lew
Keyword(s):  
Internuclear Distance ◽  
Molecular Beam ◽  
Resonance Method ◽  
Mass Ratio ◽  
Electric Resonance ◽  
Rotational Constants ◽  
Rotational Spectra ◽  
Isotopic Species

Measurement of the J = 1 ← J = 0 transitions in TIF by the molecular beam electric resonance method has resulted in the following values for the rotational constants (Mc/sec):[Formula: see text]The internuclear distance for both isotopic species calculated directly from Be = h/8π2μre2 is re = 2.08442 ± 0.00009 Å. The mass ratio of the thallium isotopes is M203/M205 =0.990240 ± 0.000020

ROTATIONAL SPECTRA OF RbF BY THE ELECTRIC RESONANCE METHOD

1958 ◽  
Vol 36 (2) ◽  
pp. 171-183 ◽  
Author(s):  
H. Lew ◽  
D. Morris ◽  
F. E. Geiger Jr. ◽  
J. T. Eisinger
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Internuclear Distance ◽  
Electric Dipole ◽  
Molecular Beam ◽  
Resonance Method ◽  
Mass Ratio ◽  
Electric Resonance ◽  
Rotational States ◽  
Rotational Spectra

Transitions between the J = 0 and J = 1 rotational states of RbF have been measured by means of the molecular beam electric resonance method. The following rotational constants have been determined (all frequencies in Mc./sec):[Formula: see text]The quadrupole interaction constants −eqQ/h in the J = 1 state are found to be[Formula: see text]The equilibrium internuclear distance is re = (2.26554 ± 0.00005) × 10−8 cm. The electric dipole moment of Rb85F in the ν = 0 state is μ = (8.80 ± 0.10) × 10−18 e.s.u. The mass ratio of the Rb isotopes is M85/M87 = 0.9770148 ± 0.0000052.

ROTATIONAL SPECTRUM OF K39F BY THE MOLECULAR BEAM ELECTRIC RESONANCE METHOD

1960 ◽  
Vol 38 (3) ◽  
pp. 482-494 ◽  
Author(s):  
G. W. Green ◽  
H. Lew
Keyword(s):  
Dipole Moment ◽  
Quadrupole Interaction ◽  
Electric Dipole Moment ◽  
Internuclear Distance ◽  
Electric Dipole ◽  
Molecular Beam ◽  
Resonance Method ◽  
Rotational Spectrum ◽  
Electric Resonance ◽  
Rotational States

Transitions between the J = 0 and J = 1 rotational states of K39F have been measured by means of the molecular beam electric resonance method. The following rotational constants have been determined (all frequencies in Mc/sec):[Formula: see text]The quadrupole interaction constants eqQ as measured in the J = 1 state are found to be[Formula: see text]The equilibrium internuclear distance obtained directly from Be is[Formula: see text]The electric dipole moment in the ν = 0 state is[Formula: see text]

ROTATIONAL CONSTANTS AND ELECTRIC DIPOLE MOMENT OF NaF

1963 ◽  
Vol 41 (9) ◽  
pp. 1461-1469 ◽  
Author(s):  
R. K. Bauer ◽  
H. Lew
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Molecular Beam ◽  
Resonance Method ◽  
Interaction Constant ◽  
Spin Rotation ◽  
Vibrational States ◽  
Electric Resonance ◽  
Rotational Constants

Transitions between the J = 0 and J = 1 rotational levels of Na23F19 have been measured by the molecular beam electric resonance method in the three lowest vibrational states. The following rotational constants have been determined (all frequencies in Mc/sec):[Formula: see text]The Na quadrupole interaction constants in the J = 1 level are:[Formula: see text]The spin-rotation interaction constant for Na in the J = 1 level for ν = 0, 1, and 2 is[Formula: see text]The equilibrium internuclear distance computed directly from Be is[Formula: see text]The electric dipole moment is:[Formula: see text]

Vollständige rs -und r0 -Struktur, 14N-Kernquadrupol-HFS und Dipolmoment von Methylthiocyanat aus dem Mikrowellenspektrum

1970 ◽  
Vol 25 (11) ◽  
pp. 1643-1654
Author(s):  
H. Dreizler ◽  
H.D. Rudolph ◽  
H. Schleser
Keyword(s):  
Dipole Moment ◽  
Diagonal Element ◽  
Isotopic Substitution ◽  
Relative Sign ◽  
Rotational Constants ◽  
Rotational Spectra ◽  
Coupling Tensor ◽  
Isotopic Species ◽  
Quadrupole Coupling ◽  
Methyl Thiocyanate

Abstract The microwave rotational spectra of five isotopic species of the molecule methyl thiocyanate, CH3SCN, have been observed in the region between 7 and 33 GHz. From the rotational constants of these and two other species whose spectra were previously known a complete rs-structure of the molecule could be determined which is compared with several r0-structures obtained subject to certain assumptions. The dipole moment components μa and μb could be determined inclusive of relative sign. The 14N quadrupole coupling tensor, complete with the only non-vanishing non-diagonal element χab, could be evaluated from the HFS of the lines and its change upon isotopic substitution.

Radiofrequency Spectra ofLi6F19by the Molecular Beam Electric Resonance Method

1952 ◽  
Vol 88 (5) ◽  
pp. 1085-1092 ◽  
Author(s):  
J. C. Swartz ◽  
J. W. Trischka
Keyword(s):  
Molecular Beam ◽  
Resonance Method ◽  
Electric Resonance
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