1,751 research outputs found
Direct measurement of the magnetic field effects on carrier mobilities and recombination in tri-(8-hydroxyquinoline)-aluminum based light-emitting diodes
The magnetic field effects on the carrier mobilities and recombination in
tri-(8-hydroxyquinoline)-aluminum (Alq3) based light-emitting diodes have been
measured by the method of transient electroluminescence. It is confirmed that
the magnetic field has no effect on the electron and hole mobilities in Alq3
layers and can decrease the electron-hole recombination coefficient. The
results imply that the dominant mechanism for the magnetic field effects in
Alq3 based light-emitting diodes is the interconversion between singlet e-h
pairs and triplet e-h pairs modulated by the magnetic field when the driving
voltage is larger than the onset voltage of the electroluminescence.Comment: 14 pages, 4 figures,The revised version submitted to applied physics
letter
Optimizing production scheduling of steel plate hot rolling for economic load dispatch under time-of-use electricity pricing
Time-of-Use (TOU) electricity pricing provides an opportunity for industrial
users to cut electricity costs. Although many methods for Economic Load
Dispatch (ELD) under TOU pricing in continuous industrial processing have been
proposed, there are still difficulties in batch-type processing since power
load units are not directly adjustable and nonlinearly depend on production
planning and scheduling. In this paper, for hot rolling, a typical batch-type
and energy intensive process in steel industry, a production scheduling
optimization model for ELD is proposed under TOU pricing, in which the
objective is to minimize electricity costs while considering penalties caused
by jumps between adjacent slabs. A NSGA-II based multi-objective production
scheduling algorithm is developed to obtain Pareto-optimal solutions, and then
TOPSIS based multi-criteria decision-making is performed to recommend an
optimal solution to facilitate filed operation. Experimental results and
analyses show that the proposed method cuts electricity costs in production,
especially in case of allowance for penalty score increase in a certain range.
Further analyses show that the proposed method has effect on peak load
regulation of power grid.Comment: 13 pages, 6 figures, 4 table
Muon anomalous magnetic dipole moment in the SSM
Recently, the Muon g-2 experiment at Fermilab has measured the muon anomalous
magnetic dipole moment (MDM), which reported that the new experimental average
increases the tension between experiment and the standard model (SM) prediction
to 4.2 standard deviations, after combination with the previous Brookhaven
National Laboratory (BNL) E821 measurement. In this work, we reanalyse the muon
anomalous MDM at two-loop level in the from Supersymmetric Standard
Model (SSM) combined with the updated experimental average. The
SSM can explain the current tension between the experimental
measurement and the SM theoretical prediction for the muon anomalous MDM,
constrained by the 125 GeV Higgs boson mass and decays, the rare decay
and so on.Comment: 14 pages, 3 figures. arXiv admin note: substantial text overlap with
arXiv:2002.04370, arXiv:2011.0428
The flavor transition process in the SSM with the mass insertion approximation
People extend the MSSM with the local gauge group to obtain the
SSM. In the framework of the SSM, we study the flavor
transition process with the mass insertion
approximation (MIA). By the MIA method and some reasonable parameter
assumptions, we can intuitively find the parameters that have obvious effect on
the analytic results of the flavor transition process .
By means of the influences of different sensitive parameters, we can obtain
reasonable results to better fit the experimental data
- …