14,367 research outputs found
Assessment of Triton Potential Energy
An assessment is made of the dominant features contributing to the triton
potential energy, with the objective of understanding qualitatively their
origins and sensitivities. Relativistic effects, short-range repulsion, and
OPEP dominance are discussed. A determination of the importance of various
regions of nucleon-nucleon separation is made numerically.Comment: 10 pages, latex, 1 figure -- To appear in Few-Body Systems --
epsfig.sty require
Storage of light: A useful concept?
We show both analytically and numerically that photons from a probe pulse are
not stored in several recent experiments. Rather, they are absorbed to produce
a two-photon excitation. More importantly, when an identical coupling pulse is
re-injected into the medium, we show that the regenerated optical field has a
pulse width that is very different from the original probe field. It is
therefore, not a faithful copy of the original probe pulse.Comment: 5 pages, 3 figures. Correct LaTEX listings of reference
Boundary Conditions for Three-Body Scattering in Configuration Space
The asymptotic behavior of three-body scattering wave functions in
configuration space is studied by considering a model equation that has the
same asymptotic form as the Faddeev equations. Boundary conditions for the wave
function are derived, and their validity is verified by numerical calculations.
It is shown that these boundary conditions for the partial differential
equation can be used to obtain accurate numerical solutions for the wave
function.Comment: 25 pages, revtex, 9 figures. Submitted to Phys. Rev. C, epsfig.sty
require
Development and fabrication of radiation resistant high efficiency solar cells Final periodic report, 24 Aug. 1966 - 24 Feb. 1967
Diffusion process for lithium doping of solar cells, and electrical characteristics and radiation resistance of solar cell
Processing deficits in monitoring analog and digital displays: Implications for attentional theory and mental-state estimation research
Subjects performed short term memory tasks, involving both spatial and verbal components, and a visual monitoring task involving either analog or digital display formats. These two tasks (memory vs. monitoring) were performed both singly and in conjunction. Contrary to expectations derived from multiple resource theories of attentional processes, there was no evidence that when the two tasks involved the same cognitive codes (i.e., either both spatial or both verbal/linguistics) there was more of a dual task performance decrement than when the two tasks employed different cognitive codes/processes. These results are discussed in terms of their implications for theories of attentional processes and also for research in mental state estimation
Scattering Calculations with Wavelets
We show that the use of wavelet bases for solving the momentum-space
scattering integral equation leads to sparse matrices which can simplify the
solution. Wavelet bases are applied to calculate the K-matrix for
nucleon-nucleon scattering with the s-wave Malfliet-Tjon V potential. We
introduce a new method, which uses special properties of the wavelets, for
evaluating the singular part of the integral. Analysis of this test problem
indicates that a significant reduction in computational size can be achieved
for realistic few-body scattering problems.Comment: 26 pages, Latex, 6 eps figure
Superluminal propagation of an optical pulse in a Doppler broadened three-state, single channel active Raman gain medium
Using a single channel active Raman gain medium we show a ns
advance time for an optical pulse of s propagating
through a 10 cm medium, a lead time that is comparable to what was reported
previously. In addition, we have verified experimentally all the features
associated with this single channel Raman gain system. Our results show that
the reported gain-assisted superluminal propagation should not be attributed to
the interference between the two frequencies of the pump field.Comment: 4 pages, 3 figure
- …