Now showing items 201-208 of 208
Transient decay of longitudinal magnetization in heterogeneous spin systems under selective saturation
(Elsevier, 1992-10-01)
The transient behavior of the longitudinal magnetization of the mobile protons in aqueous heterogeneous materials is investigated both theoretically and experimentally when selective saturation is applied by off resonance, ...
Synthesis of [11C]tetrabenazine, a vesicular monoamine uptake inhibitor, for PET imaging studies
(Elsevier, 1993-04)
Tetrabenazine (TBZ), a high affinity and specific inhibitor of the vesicular monoamine transporter, has been labeled with carbon-11 as a potential probe for in vivo positron emission tomographic imaging of monoaminergic ...
[phi]4 in three dimensions at finite temperature
(Elsevier, 1993-06-21)
We use renormalization-group methods to estimate the critical temperature for [phi]4 theory in three dimensions. We show that, by delineating the range of applicability of perturbation theory, the value of the critical ...
57Fe Mossbauer investigation of oriented single-crystal and polycrystalline PbFe12O19
(Elsevier, 1991-04-02)
57Fe Mossbauer spectra of PbFe12O19 have been obtained at 295 K on polycrystalline and single-crystal thin sections oriented with the c-axis parallel and perpendicular, respectively, to the [gamma]-ray propagation direction. ...
Structure of 11Li in the cluster-orbital shell model for the 9Li + n + n system
(Elsevier, 1990-05-28)
The properties of 11Li are studied in detail in the cluster-orbital shell model assuming the structure of 9Li + n + n. The interactions acting between the constituent particles are carefully determined consistently with ...
Long range, high resolution laser radar
(Elsevier, 1994-01-15)
A high energy, chirped pulse laser was used to demonstrate long range, high resolution radar. A broadband nanosecond chirped pulse propagated to a target, and upon compression sub-millimeter surface resolution was obtained. ...
Impact of variations in physical parameters on glow curves for planchet heating of TL dosimeters
(Elsevier, 1994-12-30)
This study consists of a theoretical analysis of the directional planchet heating of Thermoluminescent Dosimeters (TLD) with an emphasis on influence of radiation field type, TL material properties, and heating scheme ...
An amplifier-discriminator module for very high energy [gamma]-ray astronomy
(Elsevier, 1990-07-15)
An eight-channel amplifier-discriminator module has been developed for processing fast photomultiplier signals from a ground-based [gamma]-ray imaging telescope. The module provides several outputs for recording pulse ...