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Now showing items 1511-1520 of 2111
Vibron-assisted spin relaxation at a metal/organic interface
(2015)
Inspired by recent experiments for hybrid organic-ferromagnet interfaces, we propose a spin-relaxation mechanism which does not depend on either the spin-orbit or the hyperfine interaction. This takes place when a molecule ...
An X-ray search for active cores in Local Group galaxies
(Trinity College (Dublin, Ireland). School of Physics, 2000)
The nuclei of galaxies are sometimes sites of very energetic process, resulting in high levels of electromagnetic radiation being emitted. Such active galactic nuclei (AGNs) are thought to be powered by accretion of mass ...
Optical and EUV studies of laser triggered Z-pinch discharges
(Trinity College (Dublin, Ireland). School of Physics, 2014)
This thesis describes the results of experiments with two geometries of laser assisted discharge plasma. Both devices are designed for fast Z-pinch discharge, triggered by laser produced plasma generated by ablation of one ...
Site-specific order and magnetism in tetragonal Mn3Ga thin films
(2013)
Mn
3
Ga bulk material and thin films deposited on several different substrates have been investigated using
x-ray and neutron diffraction, x-ray absorption spectroscopy, x-ray magnetic circular dichroism, and ...
In Situ Thermometry of a Cold Fermi Gas via Dephasing Impurities
(2020)
The precise measurement of low temperatures is a challenging, important, and fundamental task for quantum science. In particular, in situ thermometry is highly desirable for cold atomic systems due to their potential for ...
Serial post-mortem relaxometry in the normal rat brain and following stroke
(Wiley, 2008)
Purpose: Investigation of MRI for non-invasive autopsy via measurements of serial changes in relaxation parameters of the rat brain during the post-mortem interval.
Materials and Methods: Post-mortem relaxometry measurements ...
The Giant Star Ca II Ionization Problem: Mass Loss Revisited
(2004)
Pioneering studies of winds from non-coronal evolved late-
type stars were plagued by uncertainties in the Ca ionization balance
which severely limited the accuracy of derived mass-loss rates. Here we
re-examine the Ca ...
Novel magnetic materials for spin electronic applications
(Trinity College (Dublin, Ireland). School of Physics, 2005)
Among various types of semiconductors, oxide semiconductors are the most promising host compounds to realise high Curie temperatures with transition metal doping. Room temperature ferromagnetism in dilute oxide semiconductors ...
Acceptance angle influence on optimum incident spot size for high-finesse microcavity two-photon absorption photodetectors
(2009)
The influence of the limited acceptance angle of a
high-finesse microcavity two-photon absorption photodetector on
its response has been investigated. It is shown that the limited
acceptance angle of the microcavity ...