Now showing items 21-30 of 92
Computer‐assisted magnet shimming
(The American Institute of Physics, 1981-12)
An iron electromagnet with a gap width of 23.5 cm and diameter of 30 cm was shimmed so that the field was uniform within ±4.2 parts in 104 over the central 19 cm of the axis. A description is given of the shim configuration ...
Decoupling in theories with anomalies
(Elsevier, 1981-11-02)
We consider the appearance of infinities due to the triangle anomaly in the Weinberg model by introducing terms in the lagrangian which restore the Ward identities. It is then shown that these are not the same as the ...
Theory of donor-bound multi-exciton complexes in Germanium
(Elsevier, 1981-10)
We report calculations of ground and excited state energies for multi- exciton complexes bound to phosphorus, arsenic, and bismuth donors in germanium. Band structure effects are included in a self consistent density ...
Softly broken supersymmetry and SU(5)
(Elsevier, 1981-12-21)
We construct an explicit realistic SU(5) model in which softly broken supersymmetry is used to protect the Higgs doublets from quadratic mass renormalization. The model requires one natural but incredibly accurate adjustment ...
Symmetry tests in atomic physics
(The American Institute of Physics, 1981-03-01)
Recent and continuing tests of the discrete space‐time symmetries, charge conjugation, spatial reflection, and time reversal, using atomic systems are reviewed. Particular emphasis is given to investigations searching for ...
Sturm–Liouville eigenproblems with an interior pole
(The American Institute of Physics, 1981-08)
The eigenvalues and eigenfunctions of self‐adjoint Sturm–Liouville problems with a simple pole on the interior of the interval [A, B] are investigated. Three general theorems are proved and it is shown that as n→∞, the ...
Numerical investigation of mesh size convergence rate of the finite element method in MESFET simulation
(Elsevier, 1981-06)
The mesh size convergence rate of the finite element method in two-dimensional GaAs MESFET simulation has been investigated numerically. The equations governing MESFET operation and the finite element formulation of these ...
Linewidth and viscosity of isobutyric acid—deuterium oxide mixtures of critical composition above and below the phase separation temperature
(The American Institute of Physics, 1981-05-15)
Linewidth and visocity measurement covering the single phase and two phase region were made. Comparison of the data with the mode–mode coupling results of Kawasaki show good agreement with no adjustable parameters. In the ...
Effective charges and expansion parameters in QCD
(The American Institute of Physics, 1981-10-01)
The momentum subtraction scheme MOM has been empirically successful in producing small QCD corrections to physical quantities at one loop order. By explicit calculations, we show that with a suitable shift in the renormalization ...
Contribution of nonhydrodynamic interactions to the concentration dependence of the friction factor of the mutual diffusion coefficient
(The American Institute of Physics, 1981-02-15)
The mutual diffusion coefficient Dm of a Brownian particle may be expressed as the ratio of a thermodynamic factor K and a friction factor fm, K and fm both being dependent on the macroparticle concentration. The contribution ...