Laser‐rf double resonance spectroscopy of 174YbF in the X 2Σ+ state: Spin‐rotation, hyperfine interactions, and the electric dipole moment

1996 ◽  
Vol 105 (17) ◽  
pp. 7412-7420 ◽  
Author(s):  
B. E. Sauer ◽  
Jun Wang ◽  
E. A. Hinds
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Hyperfine Interactions ◽  
Double Resonance ◽  
Spin Rotation ◽  
Resonance Spectroscopy ◽  
Double Resonance Spectroscopy ◽  
State Spin

scholarly journals P , T -Violating and Magnetic Hyperfine Interactions in Atomic Thallium

Symmetry ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 498 ◽  
Author(s):  
Timo Fleig ◽  
Leonid V. Skripnikov
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Hyperfine Interactions ◽  
Magnetic Hyperfine ◽  
Experimental Result ◽  
Central Value ◽  
Pseudoscalar Coupling ◽  
Electron Electric Dipole Moment ◽  
Atomic Ground State

We present state-of-the-art string-based relativistic general-excitation-rank configuration interaction and coupled cluster calculations of the electron electric dipole moment, the nucleon–electron scalar-pseudoscalar, and the magnetic hyperfine interaction constants ( α d e , α C S , A | | , respectively) for the thallium atomic ground state 2 P 1 / 2 . Our present best values are α d e = − 558 ± 28 , α C S = 6.77 ± 0.34 [ 10 − 18 e cm], and A | | = 21172 ± 1059 [MHz]. The central value of the latter constant agrees with the experimental result to within 0.7% and serves as a measurable probe of the P , T -violating interaction constants. Our findings lead to a significant reduction of the theoretical uncertainties for P , T -odd interaction constants for atomic thallium but not to stronger constraints on the electron electric dipole moment, d e , or the nucleon–electron scalar-pseudoscalar coupling constant, C S .

scholarly journals Studies of Systematic Limitations in the EDM Searches at Storage Rings

2016 ◽  
Vol 40 ◽  
pp. 1660093 ◽  
Author(s):  
Artem Saleev ◽  
Nikolai Nikolaev ◽  
Frank Rathmann
Keyword(s):  
Dipole Moment ◽  
Magnetic Dipole ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Magnetic Dipole Moment ◽  
Original Method ◽  
Spin Rotation ◽  
Systematic Effect ◽  
Systematic Effects ◽  
Magnetic Ring

Searches of the electric dipole moment (EDM) at a pure magnetic ring, like COSY, encounter strong background coming from magnetic dipole moment (MDM). The most troubling issue is the MDM spin rotation in the so-called imperfection, radial and longitudinal, B-fields. To study the systematic effects of the imperfection fields at COSY we proposed the original method which makes use of the two static solenoids acting as artificial imperfections. Perturbation of the spin tune caused by the spin kicks in the solenoids probes the systematic effect of cumulative spin rotation in the imperfection fields all over the ring. The spin tune is one of the most precise quantities measured presently at COSY at [Formula: see text] level. The method has been successfully tested in September 2014 run at COSY, unravelling strength of spin kicks in the ring’s imperfection fields at the level of [Formula: see text].

The Microwave Spectrum of Cyanogen Iodide-15N: Hyperfine Structure and Electric Dipole Moment Investigated by Microwave Fourier Transform Spectroscopy

1988 ◽  
Vol 43 (2) ◽  
pp. 133-137 ◽  
Author(s):  
Joachim Gripp ◽  
Helmut Dreizler
Keyword(s):  
Fourier Transform ◽  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Stark Effect ◽  
Rotational Transition ◽  
Microwave Spectrum ◽  
Spin Rotation ◽  
Coupling Parameters ◽  
Cyanogen Iodide

The first rotational transition of cyanogen iodide-15N (IC15N) has been investigated by microwave Fourier transform (MWFT) Stark effect spectroscopy to determine the electric dipole moment. In addition the first four rotational transitions have been measured by MWFT spectroscopy to obtain accurate parameters for the rotational, quadrupole and spin-rotation coupling parameters.

The Rotational Zeeman Effect of Methyl-and Silylbromide

1979 ◽  
Vol 34 (4) ◽  
pp. 469-481
Author(s):  
K.-F. Dössel ◽  
D. H. Sutter
Keyword(s):  
Dipole Moment ◽  
High Resolution ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Zeeman Effect ◽  
Spin Rotation ◽  
Coupling Constants

The rotational Zeeman effect of the J→J' = 0→1, K = 0 transition has been investigated for CH381Br and SiH381Br under high resolution. The shielding constant for the 81Br-nucleus in these molecules has been determined from the spectra and is compared to the values calculated from the spin-rotation coupling constants. The sign of the electric dipole moment in SiHßBr is shown to be ⊕H3SiBr⊕. From the Zeeman effect of two K ≠ 0 transitions of SiH3Br, g|| is determined to be negative for SiHaBr, in contrast to CH3Br, where g|| is positive

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