Now showing items 21-30 of 52
Ultrafast dynamics and interlayer thermal coupling of hot carriers in epitaxial graphene
(WILEY-VCH Verlag, 2009-02)
We report the first application of nondegenerate ultrafast pump-probe spectroscopy to investigate the dynamics of hot Dirac Fermions in epitaxial graphene. The DT spectra can be understood in terms of the effect of hot ...
A multi-sensor study of Cl 2 etching of polycrystalline Si
(WILEY-VCH Verlag, 2008-05)
Cl 2 chemistries are the basis for etching of polycrystalline Si and other conductive gate materials in Si CMOS integrated circuit fabrication. It is now well-known that recombination of atomic Cl neutrals on the chamber ...
Coherent control of bound entangled electrons in a CdMnTe quantum well
(WILEY-VCH Verlag, 2008-07)
Ultrafast laser pulses were used to control the spin state of a pair of entangled, donor-bound electrons in a CdMnTe quantum well. The entanglement, mediated by an optically-excited exciton, was characterized by pumpprobe ...
Will large weak interaction effects be observable at very high energies?
(Elsevier, 2006-04-07)
We examine the possibility that some weak interaction cross section become larger at very high energies. Such effects could lead to observable weak interaction phenomena in very high energy pp and colliding beams. A part ...
Neutron-nucleus inelastic cross sections from 160 to 375 GeV/c
(Elsevier, 2006-04-07)
We habe measured inelastic cross sections of neutrons on 14 nuclei ranging from hydrogen to uranium for neutron energies between 160 and 375 GeV. The measurements were made with a total absorption calorimeter and have an ...
Neutron-proton differential cross sections in the range 70 to 400 GeV/c
(Elsevier, 2006-04-07)
We report the results of an experiment which measured np elastic scattering differential cross sections over a range in -t from 0.15 to ~3.6 (GeV/c)2 for incident neutron momenta from 70 to 400 GeV/c. We find the logarithmic ...
The fermion mass scale and possible effects of Higgs bosons on experimental observables
(Elsevier, 2006-04-07)
We consider a conventional SU(2) [circle times operator] U(1) gauge theory with two (or more) Higgs doublets, but with the fermion mass scale determined by the vacuum expectation values of the Higgs particles rather than ...
An integrated vapor source with a porous silicon wick
(WILEY-VCH Verlag, 2007-05)
A micro vapor source has been developed for calibrating micro gas chromatograph (ΜGC) systems. By utilizing a porous silicon wick in a micro diffusion system, vapor generation with excellent stability has been achieved. ...
Substantial pressure effect on the resistivity and Curie temperature for the diluted magnetic semiconductor Sb 2– x V x Te 3
(WILEY-VCH Verlag, 2006-07)
The influence of hydrostatic pressure on the electrical resistivity Ρ and ferromagnetic transition temperature T C of bulk, single crystal Sb 1– x V x Te 3 with x = 0.03 is presented. Pressure strongly ...