Stress dependence of theEu2+nuclear quadrupole splitting and transferred hyperfine interaction in fluorite crystals

1975 ◽  
Vol 12 (9) ◽  
pp. 3519-3525 ◽  
Author(s):  
P. H. Zimmermann ◽  
R. Valentin
Keyword(s):  
Hyperfine Interaction ◽  
Quadrupole Splitting ◽  
Stress Dependence ◽  
Nuclear Quadrupole

Mössbauer Spectroscopy as a Tool for Materials Research

MRS Bulletin ◽  
1986 ◽  
Vol 11 (6) ◽  
pp. 14-17 ◽  
Author(s):  
John G. Stevens
Keyword(s):  
Hyperfine Interaction ◽  
Isomer Shift ◽  
Quadrupole Splitting ◽  
Electron Density ◽  
Gamma Ray ◽  
Hyperfine Interactions ◽  
Structure Information ◽  
Resolution Capability ◽  
Materials Research ◽  
Mössbauer Parameters

In 1958 Rudolph L. Mössbauer reported his discovery of a simple, practical way of observing nuclear gamma ray resonance. One of the remarkable features of the discovery was the high precision with which energy changes can be measured: energy resolutions of one part to 1011 −1013 are possible. With this high resolution capability it is possible to measure hyperfine interactions between the nucleus of an atom and its electronic environment. These interactions affect the line shape which can be described by several experimental Mössbauer parameters. The three primary parameters are the isomer shift (δ), the quadrupole splitting (Δ), and the magnetic hyperfine interaction.The isomer shift, determined by the position of the centroid of a set of lines in a spectrum, is proportional to the electron density at the nucleus. Since only s electrons have a probability of being at the nucleus, it is possible to obtain electronic structure information such as oxidation state and population of certain molecular orbitals.The quadrupole splitting results when the electron environment surrounding the Mössbauer nucleus is not spherical in its charge distribution. Specifically, Δ is proportional to the imbalance in electron density between the axial and equatorial directions. When this hyperfine interaction is present, there is a quadrupole splitting; i.e., a single spectra line will split into two or more lines.

Calculation of nuclear quadrupole splitting in high-Tcsuperconductors

1990 ◽  
Vol 42 (7) ◽  
pp. 4196-4201 ◽  
Author(s):  
Andres Saul ◽  
Mariana Weissmann
Keyword(s):  
Quadrupole Splitting ◽  
Nuclear Quadrupole

Communication through the phenyl ring: internal rotation and nuclear quadrupole splitting inp-halotoluenes

2013 ◽  
Vol 111 (14-15) ◽  
pp. 2189-2197 ◽  
Author(s):  
V. Alvin Shubert ◽  
David Schmitz ◽  
Melanie Schnell
Keyword(s):  
Internal Rotation ◽  
Quadrupole Splitting ◽  
Phenyl Ring ◽  
Nuclear Quadrupole

Calibration of strain vs nuclear quadrupole splitting in III–V quantum wells

1997 ◽  
Vol 70 (13) ◽  
pp. 1739-1741 ◽  
Author(s):  
D. J. Guerrier ◽  
R. T. Harley
Keyword(s):  
Quantum Wells ◽  
Quadrupole Splitting ◽  
Nuclear Quadrupole

Optical Detection of Electron Nuclear Double Resonance on the Residual Donor in GaN

1996 ◽  
Vol 1 ◽  
Author(s):  
F. K. Koschnick ◽  
K. Michael ◽  
J.-M. Spaeth ◽  
B. Beaumont ◽  
Pierre Gibart
Keyword(s):  
Hyperfine Interaction ◽  
Quadrupole Splitting ◽  
Luminescence Band ◽  
Optical Detection ◽  
Double Resonance ◽  
Yellow Luminescence ◽  
Electron Nuclear Double Resonance ◽  
Anisotropic Part ◽  
Optically Detected

Optically detected electron nuclear double resonance (ODENDOR) was measured in the 2.2 eV ‘yellow’ luminescence band associated with the residual donor in n-type undoped GaN. The ODENDOR lines are due to gallium and show a quadrupole splitting which can be described with an axial tensor. The quadrupole parameter was estimated to be q(69Ga) = 1/2 Qzz = 0.22 MHz. A hyperfine interaction for 69Ga of about 0.3 MHz for the isotropic and of about 0.15 MHz for the anisotropic part was estimated from the width of the ODENDOR lines. It is tentatively suggested that a Ga interstitial is the residual donor.

Rotationskonstante und Kernquadrupolkopplungskonstante des Trimethylehlorsilans, bestimmt aus Mikrowellenspektren / Rotational Constant and Nuclear Quadrupole Coupling Constant of Trimethylchlorosilane, Determined by Microwave Spectrum

1973 ◽  
Vol 28 (7) ◽  
pp. 1230-1232
Author(s):  
Werner Zeil ◽  
Bernhard Haas
Keyword(s):  
Quadrupole Splitting ◽  
Quadrupole Coupling Constant ◽  
Rotational Constant ◽  
Microwave Spectrum ◽  
Coupling Constant ◽  
Nuclear Quadrupole Coupling Constant ◽  
Quadrupole Coupling ◽  
Nuclear Quadrupole

The microwave spectrum of trimethylchlorosilane has been investigated between 8 and 20 GHz. The quadrupole splitting of the K = 0 lines of the transitions J = 2 → 3 and 3 → 4 have been determined. The quadrupole coupling constant of the Cl-35 atom is determined to -34.701 MHz, and the rotational constant is determined to B0 = 2197.382 MHz.

Hyperfine and nuclear quadrupole splitting of the NV− ground state in 4H -SiC

2021 ◽  
Vol 103 (24) ◽  
Author(s):  
F. F. Murzakhanov ◽  
B. V. Yavkin ◽  
G. V. Mamin ◽  
S. B. Orlinskii ◽  
H. J. von Bardeleben ◽  
...  
Keyword(s):  
Quadrupole Splitting ◽  
Ground State ◽  
Nuclear Quadrupole
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