Proton-ProtonP-Wave Phase Shifts at Low Energies

1969 ◽  
Vol 182 (4) ◽  
pp. 1031-1034 ◽  
Author(s):  
Leon Heller ◽  
Michael S. Sher
Keyword(s):  
Phase Shifts ◽  
Wave Phase ◽  
Low Energies

Vacuum polarization and D-wave α−α scattering

1969 ◽  
Vol 47 (1) ◽  
pp. 113-115 ◽  
Author(s):  
Mark W. Kermode
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Vacuum Polarization ◽  
Center Of Mass ◽  
Phase Shifts ◽  
Differential Cross Sections ◽  
Wave Phase ◽  
Low Energies ◽  
D Wave

The D-wave phase shifts for α−α scattering at low energies are obtained from (i) new analyses of the differential cross sections and (ii) the effects of vacuum polarization. The results are −0.4° (−0.4°), −0.2° (−0.4°), +0.2° (−0.4°), −0.2° (−0.2°), and 0.3° (0.2°) for the center-of-mass energies 0.3, 0.425, 0.5, 0.75, and 1.0 MeV, respectively. It is felt that these results are significant.

KN s-wave phase shifts in the non-relativistic quark model

1995 ◽  
Vol 589 (4) ◽  
pp. 585-600 ◽  
Author(s):  
B. Silvestre-Brac ◽  
J. Leandri ◽  
J. Labarsouque
Keyword(s):  
Quark Model ◽  
Phase Shifts ◽  
Relativistic Quark Model ◽  
S Wave ◽  
Wave Phase

scholarly journals Pion Theory of Nuclear Forces and Low EnergyP-Wave Phase Shifts

1961 ◽  
Vol 25 (3) ◽  
pp. 427-435 ◽  
Author(s):  
Shoichiro Otsuki ◽  
Mituo Taketani ◽  
Ryozo Tamagaki ◽  
Wataro Watari
Keyword(s):  
Phase Shifts ◽  
Nuclear Forces ◽  
Wave Phase

scholarly journals de Broglie wave phase shifts induced by surfaces closer than 25 nm

2005 ◽  
Vol 19 ◽  
pp. 48-55 ◽  
Author(s):  
Alexander D Cronin ◽  
John D Perreault
Keyword(s):  
Phase Shifts ◽  
Wave Phase ◽  
De Broglie Wave

Positron–hydrogen scattering with quadratic variational methods

1982 ◽  
Vol 60 (4) ◽  
pp. 577-580 ◽  
Author(s):  
M. A. Abdel-Raouf
Keyword(s):  
Elastic Scattering ◽  
Variational Methods ◽  
Phase Shifts ◽  
S Wave ◽  
Variational Techniques ◽  
Wave Phase

New variational techniques in which the functional [Formula: see text] is minimized are used to calculate the S-wave phase shifts of e+–H elastic scattering. The convergence of these phases, as n increases, is precisely investigated.

scholarly journals How surface magnetism affects helioseismic waves

2009 ◽  
Vol 5 (H15) ◽  
pp. 349-350
Author(s):  
Paul S. Cally
Keyword(s):  
Travel Time ◽  
Active Regions ◽  
Phase Shifts ◽  
Magnetic Effect ◽  
Surface Magnetism ◽  
Field Characteristic ◽  
Magnetic Effects ◽  
Wave Phase ◽  
Time Distance ◽  
Effect Phase

AbstractIt has been known for two decades that sunspots both absorb and advance the phase of solar f and p-modes. More recently, Time-Distance and other local helioseismic techniques have been used to probe active regions by exploring phase shifts which are interpreted as travel-time perturbations. Although absorption is an intrinsically magnetic effect, phase shifts may be produced by both thermal and magnetic effects (and of course flows, though these can be factored out by averaging travel times in opposite directions). We will show how these two effects alter wave phase, and conclude that phase shifts in umbrae are predominantly thermal, whilst those in highly inclined field characteristic of penumbrae are essentially magnetic. The two effects are generally not additive.

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