Now showing items 41-50 of 948
Homo- and Heteronuclear Multiple-Quantum Filters for Measurement of NMR Isotope Shifts
(Elsevier, 1994-03)
The measurement of NMR isotope shifts as mechanistic probes can be complicated by mixtures of isotopomers. Homo- and heteronuclear NMR techniques based on multiple-quantum filtration are presented and shown to be a useful ...
Heavy particles and the [varrho] parameter in the standard model
(Elsevier, 1981-11-09)
A new formalism is presented for the calculation of the contribution [delta][varrho] to [varrho] = Mw2/Mz2cos2[theta]w from heavy particles transforming according to arbitrary representations of SU(2) x U(1). A conjecture ...
High accuracy determination of the shape of the efficiency curve of the HPGe detector in the energy range 900 to 1300 keV
(Elsevier, 1994-12-30)
A method for high accuracy characterization of the shape of a High Purity Germanium (HPGe) detector efficiency curve has been developed. Radionuclides with decay schemes having at least two [gamma] lines, for which the ...
The University of Michigan cyclotron facility for research in nuclear structure
(Elsevier, 1974)
A number of improvements have been made in The University of Michigan 83" sector focused cyclotron since its original construction. The reasons for the changes and the resulting improvement in the production of stable ...
The effective potential and the renormalisation group
(Elsevier, 1993-04-26)
We discuss renormalisation-group improvement of the effective potential both in general and in the context of O(N) scalar [phi]4 and the Standard Model. In the latter case we find that absolute stability of the electroweak ...
Electromagnetic Transmission Through Resonant Structures.
(2016)
Electromagnetic resonators store energy in the form of oscillatory electric and magnetic fields and gradually exchange that energy by coupling with their environment. This coupling process can have profound effects on the ...
Smooth massless limit of QED
(Elsevier, 1990-10-29)
Massless QED is studied by introducing different regularization schemes for the resulting mass singularities. It is demonstrated, for the one-loop corrections to electron scattering off an external potential, that cancellation ...
Granite, a new very high energy gamma-ray telescope
(Elsevier, 1990-03)
A international collaboration of astrophysicists plan to construct a new 10-meter diameter gamma-ray Cerenkov telescope at the Whipple Observatory on Mt. Hopkins in Arizona. By operatin in coincidence with the original ...
Gamma-ray spectral imaging using a single-shutter radiation camera
(Elsevier, 1990-12-20)
As part of a program to develop mobile robots for reactor environments, we are developing a radiation-imaging camera capable of operating in medium-intensity (Z scintillator. The raster-scanning camera uses a lead-shielded ...
Amplification of 1 ps pulses at 1.053 [mu]m in a Ti:Al2O3 regenerative amplifier
(Elsevier, 1991-07-01)
We demonstrate the operation of a Ti:Al2O3 regenerative amplifier tunable around 1 [mu]m. Gains up to 108 at 1.053 [mu]m without any spectral narrowing are obtained. This amplifier is designed for use in terawatt picosecond ...