844 research outputs found
Introduction
What are the strategies, modalities and aspirations of island-based, stateless nationalist and regionalist parties in the twenty-first century? Political independence is now easier to achieve, even by the smallest of territories; yet, it is not so likely to be pursued with any vigour by the world's various persisting sub-national (and mainly island) jurisdictions. Theirs is a pursuit of different expressions of sub-national autonomy, stopping short of independence. And yet, a number of independence referenda are scheduled, including one looming in Scotland in autumn 2014
Stratigraphy of the East Flank of the Green Mountain Anticlinorium, Southern Vermont
Guidebook for field trips in Vermont: 64th annual meeting October 13, 14, 15, 1972 Burlington, Vermont: Trip B-
Narrowband spectroscopy by all-optical correlation of broadband pulses
High peak power ultrafast lasers are widely used in nonlinear spectroscopy
but often limit its spectral resolution because of the broad frequency
bandwidth of ultrashort laser pulses. Improving the resolution by achieving
spectrally narrow excitation of, or emission from, the resonant medium by means
of multi-photon interferences has been the focus of many recent developments in
ultrafast spectroscopy. We demonstrate an alternative approach, in which high
resolution is exercised by detecting narrow spectral correlations between
broadband excitation and emission optical fields. All-optical correlation
analysis, easily incorporated into the traditional spectroscopic setup, enables
direct, robust and simultaneous detection of multiple narrow resonances with a
single femtosecond pulse.Comment: 5 pages, 4 figures, submitted to PR
Pulsed-field ionization threshold photoelectron spectroscopy with coherent extreme ultraviolet radiation: A comparison of CO and N_2
Singleâphoton zeroâkineticâenergy pulsedâfieldâionization spectra have been measured for the v^+=0 and 1 levels of CO^+ (Xâ ^2ÎŁ^+) and the v^+=0 level of N_2^+ (Xâ ^2ÎŁ_g^+) by coherent XUV radiation. In spite of similarities in the electronic structure of CO and N_2, the measured ion spectra show dramatically different intensities for the Q branches. These threshold spectra are interpreted on the basis of ab initio calculations of the ion rotational distributions. Agreement between the calculated and measured spectra is very encouraging. Improved values for the ionization potentials of CO (113â025.6 and 115â211.2±1.5 cm^(â1) for v^+=0 and 1, respectively) are reported and the unusual dynamics favoring ÎN<0 transitions are discussed. The CO spectra show quite different behavior for the ÎN<0 transitions for v^+=0 and v^+=1 bands, which is interpreted in terms of the relative importance of rotational autoionization in the two bands
High resolution study of low-lying correlation satellites below 25 eV in xenon probed by pulsed-field-ionization-zero-kinetic-energy photoelectron spectroscopy
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