Now showing items 11-20 of 595
Non-existence of renormalizable self-interaction in N = 2 supersymmetry for scalar hypermultiplets
(Elsevier, 1984-07-23)
We prove that the assumption of invariance under "isospin rotations", i.e. automorphisms of N = 2 supersymmetric charges, implies that there is no local renormalizable interaction among scalar hypermultiplets.
Nonclassical crossovers in binary reactions in one-dimensional systems
(Elsevier, 1994-01)
We examine the crossover behavior for the A + A --> O and A + B --> O reactions, which are highly nonclassical for a random initial distribution of reactants. We find that both reactions quickly depart from the ...
Singlet particle extension of the minimal Higgs sector
(Elsevier, 1993-06-07)
A scalar singlet particle, named U, is coupled to the Higgs sector of the standard model for the purpose of parametrizing the large Higgs mass behaviour of the theory. The radiative corrections to the low-energy parameters ...
A simple synthesis of [11C]methyl triflate
(Elsevier, 1992-11)
[11C]Methyl triflate ([11C]methyl trifluoromethanesulfonate) was formed in high yield when [11C]methyl iodide in a nitrogen carrier was passed at 200[deg]C through a column containing graphitized carbon impregnated with ...
Cross sections for dark matter particles and implications for allowed masses, interactions, and detection
(Elsevier, 1986)
We present scattering and annihilation cross sections for a number of candidates for dark matter: heavy neutrinos, photinos, scalar-neutrinos, and higgsinos. In the mass region below about 10 GeV, annihilation cross sections ...
The 12C([alpha], n)15O and 16O([alpha], n)19Ne reactions at E[alpha] = 41 MeV
(Elsevier, 1981-06-15)
Spectra and neutron angular distributions have been obtained for the ([alpha], n) reaction on 12C and 16O to (a) determine whether with this reaction more detailed spectroscopic information can be extracted than from ...
Analysis of the inelastic scattering of 50 MeV protons
(Elsevier, 1968-09-23)
Differential cross sections and asymmetries for 50 MeV proton scattering from vibrational states in 64,66,68,70Zn and 114Cd have been analysed using a collective-model interaction obtained by deforming the entire optical ...
Efficiency and angular resolution calculations for a prototype multiple Compton scatter camera
(Elsevier, 1994-06-15)
Monte Carlo simulations were performed to optimize the layer thickness of a Compton camera which utilizes multiple Compton scatterings. The optimum layer thickness was found to be less than 0.5 mm for 150 keV, 2 mm for 511 ...
Digital techniques for real-time pulse shaping in radiation measurements
(Elsevier, 1994-12-30)
Recursive algorithms for real-time digital pulse shaping in pulse height measurements have been developed. The differentiated signal from the preamplifier (exponential pulse) is amplified and then digitized. Digital data ...
An image intensifier-scintillator device for determination of profiles and images of weak beams of ionizing particles or X-rays
(Elsevier, 1961)
An instrument for determining the shape and intensity distribution of particle and X-ray beams has been developed using an image intensifier tube together with a bundle of filaments of scintillator. A description of the ...