scholarly journals S-Wave Shape-Dependent Scattering Parameters of the Proton-Proton Interaction

1968 ◽  
Vol 21 (7) ◽  
pp. 438-441 ◽  
Author(s):  
R. J. Slobodrian
Keyword(s):  
Scattering Parameters ◽  
Wave Shape ◽  
S Wave ◽  
Proton Proton ◽  
Proton Interaction

scholarly journals Theoretical Study on Proton Diffusivity in Y-Doped BaZrO3 with Realistic Dopant Configurations

2020 ◽  
Author(s):  
Takeo Fujii ◽  
Kazuaki Toyoura ◽  
Tetsuya Uda ◽  
Shusuke Kasamatsu
Keyword(s):  
First Principles ◽  
Theoretical Study ◽  
Site Effect ◽  
Barium Zirconate ◽  
Proton Proton ◽  
Potential Wells ◽  
Proton Interaction ◽  
Master Equation Approach ◽  
Replica Exchange Monte Carlo ◽  
Random Configuration

We theoretically revisit the proton diffusivity in yttrium-doped barium zirconate (Y-doped BaZrO<sub>3</sub>) with realistic dopant configurations under processing conditions. In a recent study employing the replica exchange Monte Carlo method, the equilibrium Y configurations at typical sintering temperatures were shown to deviate from the random configuration assumed in earlier theoretical studies. In the present study, we took this observation into account and evaluated the effect of the Y configuration on the proton diffusivity. Using the master equation approach based on local diffusion barriers calculated from first principles, the proton diffusivities under realistic Y configurations were estimated to be higher than those in the random configuration. This is explained by the fact that realistic Y configurations have fewer trap sites with deep potential wells compared to the random configuration due to the isolation trend of Y dopants. In addition, the effects of proton-proton interaction and the abundance of preferential conduction pathways are discussed; it is found that both are relatively minor factors compared to the trap site effect in determining the dependence of the proton diffusivity on the Y configurations.<br>

Finite-dimensional approximation of the scattering matrix

1986 ◽  
Vol 64 (5) ◽  
pp. 611-616 ◽  
Author(s):  
Helmut Kröger ◽  
Anais Smailagic ◽  
Ralph Girard
Keyword(s):  
Weak Coupling ◽  
Weak Coupling Regime ◽  
S Wave ◽  
Proton Proton ◽  
Time Evolution Operator ◽  
Finite Dimensional Approximation ◽  
Finite Dimensional ◽  
Dimensional Approximation ◽  
S Matrix ◽  
Computer Calculations

A finite-dimensional nonperturbative approximation scheme of the time-evolution operator and the S matrix for relativistic field theories is discussed. It is amenable to computer calculations. Parallels with lattice-field theory are drawn. The method is outlined for the ϕ4 theory. Equivalence to standard perturbation theory in the weak-coupling regime is obtained in the limit of the approximation parameters. The method is tested numerically for nonrelativistic proton–proton s-wave scattering and the the ϕ4 model in the weak-coupling regime in 1 + 1 dimensions. In both examples, convergence to the reference solution is found.

scholarly journals Evidence of Short-Range Repulsive Spin-Orbit Components in the Proton-Proton Interaction

1987 ◽  
Vol 77 (3) ◽  
pp. 497-501 ◽  
Author(s):  
M. Matsuda ◽  
H. Suemitsu ◽  
M. Yonezawa
Keyword(s):  
Short Range ◽  
Spin Orbit ◽  
Proton Proton ◽  
Proton Interaction

Missing-mass dependence of some correlation parameters in proton-proton interaction at 28.5 GeV/c

1974 ◽  
Vol 9 (11) ◽  
pp. 432-434 ◽  
Author(s):  
F. Ochiai ◽  
Y. Homma ◽  
O. Kusumoto ◽  
H. Okabe ◽  
M. Teranaka ◽  
...  
Keyword(s):  
Mass Dependence ◽  
Missing Mass ◽  
Proton Proton ◽  
Proton Interaction ◽  
Correlation Parameters

S-Wave Shape Resonances in the Ps− System

2013 ◽  
Vol 54 (11) ◽  
pp. 1937-1944 ◽  
Author(s):  
L. G. Jiao ◽  
Y. K. Ho
Keyword(s):  
Wave Shape ◽  
S Wave ◽  
Shape Resonances

Investigation of the proton-proton interaction at high energies

1956 ◽  
Vol 3 (S1) ◽  
pp. 119-132 ◽  
Author(s):  
M. G. Meščerjakov ◽  
N. P. Bogačev ◽  
B. S. Neganov
Keyword(s):  
Proton Proton ◽  
High Energies ◽  
Proton Interaction
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