Now showing items 971-980 of 1043
Radiative corrections to parapositronium decay
(Elsevier, 1980-09)
Radiative corrections to the two-gamma decay of parapositronium are examined. Special care is taken in the handling of the so-called binding diagram; in particular, the limiting procedure related to the infrared divergence ...
Design for improved resolution in a time‐of‐flight mass spectrometer using a supersonic beam and laser ionization source
(The American Institute of Physics, 1985-03)
This article describes the design of a time‐of‐flight mass spectrometer (TOFMS) constructed for optimum use with resonance‐enhanced multiphoton ionization spectroscopy in supersonic beams. The use of the supersonic beam ...
Deconvolution of neutron depth profiling spectra
(Elsevier, 1986-09)
Iterative methods for determining deconvolued depth profiles from measured neutron depth profiling (NDP) energy spectra are presented. The methods account for energy broadening caused by system noise, energy straggling, ...
The influence of interface thermal contact resistance on the heat transfer performance of prestressed Duplex tube
(Elsevier, 1986-05)
Duplex heat exchanger tubes consist of two concentric cylinders assembled in a state of prestress by shrink fitting. During operation, thermal expansion changes the interface pressure and this can cause a substantial ...
Perhaps scalar neutrinos are the lightest supersymmetric partners
(Elsevier, 1984-07-23)
We consider the possibility that the scalar partners of the neutrinos are the least massive supersymmetric partners, and show that this alternative is compatible with cosmological constraints, which put a significant lower ...
Improving emission-computed-tomography quantification by Compton-scatter rejection through offset windows
(Elsevier, 1986-01-15)
Historically in nuclear medicine the acceptance window for total-energy pulse-height has been set to maximize contrast and resolution in the image. Recently, there has been increased emphasis on quantification of digital ...
Comparison of light quark and charm quark fragmentation
(Elsevier, 1985-10-31)
Separate samples of charm quark and light quark (u, d, s) jets have been isolated in an experiment studying e+e- annihilations at . The results come from data corresponding to an integrated luminosity of 111 pb-1 collected ...
Permeation of hydrocortisone and hydrocortisone 21-alkyl esters through silicone rubber membranes -- relationship to regular solution solubility behavior
(Elsevier, 1987-01)
Rates of permeation of 75 [mu]m thick silicone rubber membranes by hydrocortisone and six homologous hydrocortisone 21-alkyl esters, all applied to the membranes in aqueous media, were assessed in small glass diffusion ...
Soft breaking of two-loop finite N = 1 supersymmetric gauge theories
(Elsevier, 1984-11-29)
The effect of soft supersymmetry-breaking terms on one-loop finite N = 1 supersymmetric gauge theories is investigated, and the general conditions that finiteness be preserved given. Particular attention is paid to the ...