Effect of the shape of the structural pyramid in ABC3 molecules on the asymmetry parameter and the quadrupole interaction constant

1965 ◽  
Vol 6 (2) ◽  
pp. 193-196 ◽  
Author(s):  
V. S. Grechishkin
Keyword(s):  
Quadrupole Interaction ◽  
Asymmetry Parameter ◽  
Interaction Constant ◽  
The Asymmetry

Quadrupole Interaction in Hafnium Metal

1973 ◽  
Vol 51 (14) ◽  
pp. 1505-1507 ◽  
Author(s):  
H. Zmora ◽  
L. M. Lowe ◽  
W. V. Prestwich
Keyword(s):  
Quadrupole Interaction ◽  
Thermal History ◽  
Asymmetry Parameter ◽  
Electric Quadrupole ◽  
Electric Quadrupole Interaction ◽  
Annealing Temperatures ◽  
History Of ◽  
The Asymmetry

The electric quadrupole interaction of 181Ta in Hf metal has been measured as a function of the annealing temperatures of the irradiated samples. The asymmetry parameter obtained was η = 0.3, independent of the thermal history of the samples.

The Asymmetry Parameter and Aggregate Particles

1997 ◽  
Author(s):  
Gorden Videen ◽  
Ronald G. Pinnick ◽  
Dat Ngo ◽  
Qiang Fu ◽  
Petr Chylek
Keyword(s):  
Asymmetry Parameter ◽  
The Asymmetry ◽  
Aggregate Particles

On The Phase Structure of the Asymmetric Three-State Potts Model

1982 ◽  
Vol 21 ◽  
Author(s):  
G. v. Gehlen
Keyword(s):  
Phase Boundary ◽  
Potts Model ◽  
Phase Structure ◽  
Asymmetry Parameter ◽  
Finite Size ◽  
Critical Index ◽  
Incommensurate Phase ◽  
Finite Size Scaling ◽  
Lifshitz Point ◽  
The Asymmetry

ABSTRACTFinite-size scaling is applied to the Hamiltonian version of the asymmetric Z3-Potts model. Results for the phase boundary of the commensurate region and for the corresponding critical index ν are presented. It is argued that there is no Lifshitz point, the incommensurate phase extending down to small values of the asymmetry parameter.

The effect of the asymmetry parameter on the unresolved quadrupole splitting of 151Eu Mo¨ssbauer spectra

1972 ◽  
Vol 15 (4) ◽  
pp. 598-599 ◽  
Author(s):  
Alan. L. Nichols ◽  
Norman R. Large ◽  
George Lang
Keyword(s):  
Quadrupole Splitting ◽  
Asymmetry Parameter ◽  
The Asymmetry

The asymmetry parameter of the electric field gradient in molecular crystals

1967 ◽  
Vol 7 (1) ◽  
pp. 103-106
Author(s):  
N. E. Ainbinder ◽  
V. S. Grechishkin ◽  
A. N. Osipenko
Keyword(s):  
Electric Field ◽  
Electric Field Gradient ◽  
Field Gradient ◽  
Asymmetry Parameter ◽  
Molecular Crystals ◽  
The Asymmetry

On the asymptotic behaviour of the asymmetry parameter in fission

1974 ◽  
Vol 49 (4) ◽  
pp. 315-317 ◽  
Author(s):  
P.-G. Reinhard ◽  
P. Lichtner ◽  
D. Dreschsel
Keyword(s):  
Asymptotic Behaviour ◽  
Asymmetry Parameter ◽  
The Asymmetry

Rapid Measurement of Nutation NQR Spectra in Powders Using an RF Pulse Train

1996 ◽  
Vol 51 (5-6) ◽  
pp. 363-367 ◽  
Author(s):  
Nicolai Sinyavsky ◽  
Michał Ostafin ◽  
Mariusz Maćkowiak
Keyword(s):  
Asymmetry Parameter ◽  
Pulse Train ◽  
Pulse Action ◽  
Rf Pulses ◽  
Time Saving ◽  
Long Time ◽  
The Asymmetry ◽  
Rf Pulse ◽  
Time Required

Abstract The method of two-dimensional nutation NQR spectroscopy, introduced by Harbison in 1989, has been successfully used for determining of the asymmetry parameter of the EFG tensor for spin-3/2 nuclei in both powdered and monocrystal samples in the absence of an external magnetic field. The inconvenience inherent in the method, however, is the long time required, because data acquisition must be repeated for various RF pulse lengths. We discuss a method to reduce the time of the nutation experiment by using a sequence of identical short RF pulses of length r w and distance τ. It is shown that for an NQR frequency ω0 , frequency offset Δω, and pulse parameters satisfying the relation ω0τ + Δωtw = 2πk (k = 1, 2, 3,..., n) a synchronism of pulse action takes place and the nutation interferogram can be measured "stroboscopically" between the pulses. The maximum time saving factor that can be obtained as compared to the conventional nutation experiment is of the order of the number of pulses used in a pulse train. The method has been successfully applied for determination of the asymmetry parameter for one of the two 3 5 Cl sites in polycrystalline 2,4,6-trichloro-1,3,5-triazine (cyanuric chloride).

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