A Possible Role of the Gailitis Resonance in Muon Catalyzed Fusion

In a previous JMP article published May 2013, a comprehensive calculation was presented for all properties of a number of long-life s-state Gailitis resonances lying just above the PS(n = 2) formation threshold in a positron-Hydrogen scattering system. The six open-channel calculation was carried out by solving a set of four hundred thousand coupled linear equations. The modified Faddeev equation was used to obtain the wave-amplitude for each of the six open channels. Details can be found in reference [1] 08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F005200650066003400300037003200380034003600370034000000 . This note presents some qualitative properties of Gailitis resonances in the scattering systems of d + tu just above the thresholds of the opening of a new channel of the muonic atoms tu(n) or du(n), n > 2 is the principal quantum number. u is a negatively charged muon, d and t are the nuclei of the two isotopes of the Hydrogen atom with one and two neutrons in the nucleus respectively. We study the possible decay channels of some of the long-life Gailitis resonances. Of particular interest is a transition directly from a Gailitis (3-body) resonance to the bound states dtu molecular ions via a radiative emission of a photon or an external auger ejection of a nearby electron. Possible experimental evidence will be presented.

Long-Range Correlation in Positron-Hydrogen Scattering System near the Threshold of <i>Ps</i>(<i>n</i>= 2) Formation

This is a short report of a recently uncovered resonant phenomenon. The modified Faddeev equation that correctly includes all six open channels is used. The calculation is carried out in s-partial wave. We report a number of resonant peaks in the elastic cross sections as well as the wave amplitudes involved. This is the energy region where the Stark-effect induced electric dipole energy split in the target dominates the physics and the Long-Range behavior of the 3-body scattering system. It is found that when the center of mass collision energy in the new channels is in integer proportion to the corresponding electric dipole energy split, Bremsstrahlung photon mediated resonant scattering occurs. The corresponding wave amplitudes deform into wave-packets hundreds to thousands of Bohr radii in width. The physical implication of this phenomenon will be discussed.

WUI fire risk mitigation in Europe:A performance-based design approach at home-owner level

Fires at the Wildland-Urban Interface(WUI)are becoming increasingly hazardous for life safety and property protection.Guidelines and standards for fire practitioners are needed in order to help WUI communities face this threat and become fire-adapted.A performance-based design approach(PBD)is proposed to deal with the complex issues present at the WUI homeowner scale,which entails the use of Computational Fluid Dynamics(CFD)tools such as FDS in order to identify vulnerabilities in a quantitative manner.An analysis of recent European WUI fires is presented,along with the definition of several pattern scenarios that can be derived from these.Based on this analysis,examples of PBD fire scenarios specific for the Mediterranean WUI microscale are presented,involving glazing systems,roofing and gutters,external structures adjacent to the main building,and gaps present in the building envelope.A worked example to show the implementation of the proposed PBD method is provided in which the fire impact of residential fuel on a glazing system is quantitatively analysed.