Threshold concentration for H blistering in defect free W

Blistering of H-implanted GaN

Mechanisms of blistering of wurtzite GaN films implanted with H ions are studied. In particular, we report on the influence of the following parameters on the blistering process: ~i! ion energy ~from 20 to 150 keV!, ~ii! ion dose ~up to 1.2310 cm!, ~iii! implantation temperature ~from 2196 to 250 °C!, and ~iv! annealing temperature ~up to 900 °C!. Results show that both the onset of blistering ...

Measurement of the W + W - Threshold

Scan strategies for the measurement of--the e+e+ W+W-. threshold arg discussed. The most sensitive beam energies (I&) for the measurement of the T/lr mass (.k!w) and width (I?w are Eb N ik!tv + 0.5 GeV and Eb N &lw 1 GeV, ) respectively. With a commitment of 250 pb-’ to the measurement of the W-pa.ir threshold, it appears to be possible measure Mw with a precision SMw 2 160 MeV. The correspondi...

Contralateral Pedicled Anterolateral Thigh Flap (ATL) for Upper Thigh Defect in the Era of Free ATL?

Threshold Functions for H-factors

Let H be a graph on h vertices, and let G be a graph on n vertices. An H-factor of G is a spanning subgraph of G consisting of n/h vertex disjoint copies of H. The fractional arboricity of H is a(H) = max{ |E ′| |V ′|−1}, where the maximum is taken over all subgraphs (V ′, E′) of H with |V ′| > 1. Let δ(H) denote the minimum degree of a vertex of H. It is shown that if δ(H) < a(H) then n−1/a(H)...

Properties of Soft Radiation Near tt̄ and W + W − Threshold

We discuss the characteristic interference features of soft radiation in the threshold production of heavy unstable particles: soft gluon radiation in e+e− → tt̄ and soft photon radiation in e+e− → W+W−. We show that the heavy particle decay width controls the interference between the emission off the final state particles. As a result, the radiation pattern may provide a way of measuring the de...