Now showing items 21-30 of 62
Easily constructed high‐vacuum valve
(The American Institute of Physics, 1982-10)
We present a design for a high‐vacuum valve which can be built very quickly and easily. It has the additional feature that it is very thin.
Thin-film cryogenic accelerator targets
(Elsevier, 1982-12-01)
Thin-film accelerator targets (0.1 mg/cm2 x 2) produced by condensation of various gases (Ar, Kr, Xe, N2, etc.) onto thin, cryogenically cooled substrates (T = 20 K to 80 K) have been developed and tested in-beam with 35 MeV 4He.
Two-proton pickup in the zirconium region using the (6Li, 8B) reaction
(Elsevier, 1982-03-01)
Spectra at [theta]lab = 8[deg] have been measured for the 92, 94, 96, 98, 100Mo(6Li, 8B)90, 92, 94, 96, 98Zr and 90, 92, 94Zr(6Li, 8B)88, 90, 92Sr two-proton pickup reactions at 90 MeV. The strongest transitions to levels ...
A Numerical technique for solving carrier-mediated transport problems
(Elsevier, 1982-06)
A numerical technique and a computer program based on the method of orthogonal collocation on finite elements for solving steady state carrier-mediated transport problems is presented. The method is especially suitable in ...
Massless composites with massive constituents
(Elsevier, 1982-05-31)
We construct model field theories in which a confining gauge interaction binds massive elementary fermions into massless composite particles. The massless composites are either Goldstone bosons or fermions. In these models, ...
Theta functions, Gaussian series, and spatially periodic solutions of the Korteweg–de Vries equation
(The American Institute of Physics, 1982-03)
It has been shown by Novikov [Funct. Anal. Appl. 8, 236 (1974)], Dubrovin et al. [Russian Math. Surveys 31, 59 (1976)], Lax [Commun. Pure Appl. Math. 28, 141 (1975)], McKean and van Moerbeke [Inv. Math. 30, 217 (1975)], ...
An inexpensive, high performance pulse-height readout system for proportional chambers
(Elsevier, 1982-06-15)
We describe a simple system to read out pulse-height information from a large number of proportional chambers. Its main features are simplicity, low noise, and wide dynamic range. A complete system with 6000 channels was ...
Duality transformations for general abelian systems
(Elsevier, 1982-02-01)
We describe the general structure of duality transformations for a very broad set of abelian statistical and field theoretic systems. This includes theories with many different types of fields and a large variety of kinds ...
A constraint from B decay on models with no t quark
(Elsevier, 1982-02-08)
We show that if the b quark is assigned to a singlet representation of the weak interaction SU(2) symmetry and if it decays through the usual weak bosons W+/- and Z0, then neutral current decays occur at such a rate that ...
Pseudopotential SCF–MO studies of hypervalent compounds. IV. Structure, vibrational assignments, and intramolecular forces in IF7
(The American Institute of Physics, 1982-04-15)
Ewig’s pseudopotential procedure, applied with a small basis set, yielded a minimum energy structure with D5h symmetry instead of the deformed pseudorotating structure proposed to account for electron diffraction and ...