Now showing items 41-50 of 95
Synchrotron x-ray radiation from laser wakefield accelerated electron beams in a plasma channel
(2010-08)
Synchrotron x-ray radiation from laser wakefield accelerated electron beams was characterized at the HERCULES facility of the University of Michigan. A mono-energetic electron beam with energy up to 400 MeV was observed ...
Swarm of ultra-high intensity attosecond pulses from laser-plasma interaction
(2010-08)
We report on the realistic scheme of intense X-rays and γ-radiation generation in a laser interaction with thin foils. It is based on the relativistic mirror concept, i.e., a flying thin plasma slab interacts with a ...
Anharmonicity-induced resonances for ultracold atoms and their detection
(2010-05)
When two atoms interact in the presence of an anharmonic potential, such as an optical lattice, the center of mass motion cannot be separated from the relative motion. In addition to generating a confinement-induced resonance ...
Control of proton energy in ultra-high intensity laser-matter interaction
(2010-08)
Recent breakthroughs in short pulse laser technology resulted in (i) generation of ultra-high intensity (2×1022 W/cm2) and (ii) ultra-high contrast (10−11) short pulses at the Hercules facility of the University of Michigan, ...
Guided wave structural health monitoring using CLoVER transducers in composite materials
(2010-01)
The guided wave (GW) field excited by piezoelectric wafers and piezocomposite transducers in carbon-fiber composite materials is experimentally investigated with applications to structural health monitoring. This investigation ...
Energetic electron and ion generation from interactions of intense laser pulses with laser machined conical targets
(2010-05)
The generation of energetic electron and proton beams was studied from the interaction of high intensity laser pulses with pre-drilled conical targets. These conical targets are laser machined onto flat targets using 7–180 ...
Transformation strain based method for characterization of convective heat transfer from shape memory alloy wires
(2010-03)
While shape memory alloys (SMAs) have many actuation benefits, their frequencies are commonly restricted by slow cooling times caused by limitations in convective heat transfer. To increase the cooling speed and at the ...
The ATLAS MDT remote calibration centers
(2010-04)
The precision chambers of the ATLAS Muon Spectrometer are built with Monitored Drift Tubes (MDT). The requirement of high accuracy and low systematic error, to achieve a transverse momentum resolution of 10% at 1 TeV, can ...
Tailored magnetoelastic sensor geometry for advanced functionality in wireless biliary stent monitoring systems
(2010-07)
This paper presents three types of wireless magnetoelastic resonant sensors with specific functionalities for monitoring sludge accumulation within biliary stents. The first design uses a geometry with a repeated cell shape ...
Calibration of the LIGO displacement actuators via laser frequency modulation
(2010-11)
We present a frequency modulation technique for calibration of the displacement actuators of the LIGO 4 km long interferometric gravitational-wave detectors. With the interferometer locked in a single-arm configuration, ...