Intensities of the Dipole and Quadrupole Rotation–Vibration Spectra of HD

1974 ◽  
Vol 52 (13) ◽  
pp. 1144-1151 ◽  
Author(s):  
A.R. W. McKellar
Keyword(s):  
Electric Quadrupole ◽  
Dipole Transition ◽  
Absorption Cell ◽  
Quadrupole Transition ◽  
Vibration Spectra ◽  
Intensity Calculations ◽  
Good Agreement ◽  
Dipole Transition Moment ◽  
Dipole Band ◽  
Theoretical Intensity

The 1–0, 2–0, 3–0, and 4–0 rotation–vibration bands of HD have been studied using a cooled multiple-traversal absorption cell and a grating spectrometer; intensities were measured for one electric quadrupole and 13 dipole transitions. There is particular interest in these intensities because HD has recently been detected on Jupiter by means of the 4–0 dipole band. Since the four bands were studied with the same gas samples and apparatus, possible errors in the measurement of their relative intensities were minimized. A rather large rotational dependence was found for the 1–0 band dipole transition moment. The present results are compared with theoretical intensity calculations, and it is concluded that there is good agreement for the quadrupole transition, but not for the dipole transitions.

Measurement of weak optical transition moments through two-pathway coherent control

2014 ◽  
Vol 92 (2) ◽  
pp. 144-156 ◽  
Author(s):  
D. Antypas ◽  
D.S. Elliott
Keyword(s):  
Coherent Control ◽  
Optical Transition ◽  
Critical Evaluation ◽  
Electric Quadrupole ◽  
Systematic Errors ◽  
Dipole Transition ◽  
Full Description ◽  
Optical Transitions ◽  
Systematic Effects ◽  
Dipole Transition Moment

We present a full description of the (ω, 2ω) two-pathway coherent control interference technique for measurement of weak, highly forbidden optical transitions. We have recently applied this technique to the measurement of the magnetic dipole transition moment M1 of the 6s 2S1/2 → 7s 2S1/2 transition in atomic cesium. We also demonstrate detailed methods by which this technique may be used for measurement of the electroweak-induced parity nonconserving amplitude in atomic cesium. The principal benefits of this technique include reduced systematic errors related to field reversals often encountered in related measurements, reduced interference from adjacent, noninterfering transitions, and the absence of electric quadrupole transitions. We present a critical evaluation of the effects induced by stray fields and other systematic effects.

Power Broadening of Saturated Absorption Resonances in a Gas 13CH3F

2011 ◽  
Vol 6 (1) ◽  
pp. 9-15
Author(s):  
Elena S. Ostapenko ◽  
Dmitry V. Ledovskikh ◽  
Natalia N. Rubtsova
Keyword(s):  
Radiation Intensity ◽  
Vibration Mode ◽  
Dipole Transition ◽  
Resonance Width ◽  
Probe Radiation ◽  
Saturated Absorption ◽  
Radiation Wave ◽  
Vibration Rotation ◽  
Good Agreement ◽  
Dipole Transition Moment

Saturated absorption resonances in a gas 13CH3F at the vibration-rotation transition R(4,3) 0–1 of vibration mode ν3 detected in a probe radiation wave transmission in a presence of unidirectional saturating wave are investigated. The width of saturated absorption resonances is increasing with the growth of saturating radiation intensity. In the limit of strong saturation, the resonance shape differs from Lorentzian one by the sharper decrease in the wings, and the resonance width allows to estimate the dipole transition moment d = 0.045 D in good agreement with literature data for this transition of 13CH3F

The Deformation Structure of the Nuclei 32S and 36Ar

2017 ◽  
Vol 13 (2) ◽  
pp. 4678-4688
Author(s):  
K. A. Kharroube
Keyword(s):  
Single Particle ◽  
Electric Quadrupole ◽  
Quadrupole Moments ◽  
Moments Of Inertia ◽  
Deformation Structures ◽  
Particle Potential ◽  
Nilsson Model ◽  
Single Particle Potential ◽  
Axes Of Symmetry ◽  
Good Agreement

We applied two different approaches to investigate the deformation structures of the two nuclei S32 and Ar36 . In the first approach, we considered these nuclei as being deformed and have axes of symmetry. Accordingly, we calculated their moments of inertia by using the concept of the single-particle Schrödinger fluid as functions of the deformation parameter β. In this case we calculated also the electric quadrupole moments of the two nuclei by applying Nilsson model as functions of β. In the second approach, we used a strongly deformed nonaxial single-particle potential, depending on Î² and the nonaxiality parameter γ , to obtain the single-particle energies and wave functions. Accordingly, we calculated the quadrupole moments of S32 and Ar36 by filling the single-particle states corresponding to the ground- and the first excited states of these nuclei. The moments of inertia of S32 and Ar36 are then calculated by applying the nuclear superfluidity model. The obtained results are in good agreement with the corresponding experimental data.

LX-ray Spectra and E2 Internal Conversion Coefficients in Radon and Radium

1973 ◽  
Vol 28 (10) ◽  
pp. 1635-1641 ◽  
Author(s):  
A. G. de Pinho ◽  
M. Weksler
Keyword(s):  
Excited States ◽  
Internal Conversion ◽  
Electric Quadrupole ◽  
Alpha Decay ◽  
X Ray ◽  
Internal Conversion Coefficients ◽  
Conversion Coefficients ◽  
Good Agreement

The X-ray spectra resulting from the internal conversion of electric quadrupole transitions following the alpha decay of Th230 and Ra226 were analysed with a Si (Li) spectrometer. From the knowledge of the Coster-Kronig and fluorescence yields, the internal conversion coefficients of the E2 transitions from the first excited states in Ra226 and Rn222 could be deduced. Results are in good agreement with theoretical values.

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