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

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>

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

Dynamic polarization work at A. E. R. E., Harwell

1965 ◽  
Vol 283 (1395) ◽  
pp. 480-480
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Spin Correlation ◽  
Proton Scattering ◽  
Dynamic Polarization ◽  
Target Polarization ◽  
Proton Proton ◽  
Low Intensity ◽  
Correlation Parameters

In proton-proton scattering, when both incident and target protons have polarizations of P 1 and P 2 respectively in a direction normal to the plane of scattering, the differential cross-section, σ, at angle θ is given by σ( θ ) = σ 0 ( θ ) {1 + ( P 1 + P 2 ) P 3 ( θ ) + P 1 P 2 C NN ( θ )}. P 3 ( θ ) and C NN ( θ ) are the polarization and spin-correlation parameters of proton-proton scattering, and are functions of incident proton energy and scattering angle. The Harwell synchrocyclotron provides a choice of two proton beams at an energy of 142MeV ( a ) high intensity P 1 = 0, and ( b ) low intensity P 1 = ±0.48. P 3 ( θ ) is a well-known quantity, and the two remaining unknowns, P 2 and C NN ( θ ) can be obtained by comparing differential cross-sections measured with beams ( a ) and ( b ). Somewhat higher precision is obtainable in such a measurement of the target polarization P 2 than by either of the existing solid-state methods (Schmugge & Jeffries 1962; Abragam, Borghini & Chapellier 1962).

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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