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Most of the low-energy electrons emitted from a material when it is subjected to ionization radiation are believed to be directly ionized secondary electrons. Coincidence measurements of the electrons ejected from water clusters suggests many are produced by a quantitatively new mechanism, known as intermolecular Coulombic decay. Low-energy electrons are the most abundant product of ionizing radiation in condensed matter. The origin of these electrons is most commonly understood to be secondary electrons 1 ionized from core or valence levels by incident radiation and slowed by multiple inelastic scattering events. Here, we investigate the production of low-energy electrons in amorphous medium-sized water clusters, which simulate water molecules in an aqueous environment. We identify a hitherto unrecognized extra source of low-energy electrons produced by a non-local autoionization process called intermolecular coulombic decay 2 (ICD). The unequivocal signature of this process is observed in coincidence measurements of low-energy electrons and photoelectrons generated from inner-valence states with vacuum-ultraviolet light. As ICD is expected to take place universally in weakly bound aggregates containing light atoms between carbon and neon in the periodic table 2 , 3 , these results could have implications for our understanding of ionization damage in living tissues.

This important volume sheds light on a group of smaller European countries, often overlooked in economic discussions, that share a high degree of corporatism-Austria, Belgium, Denmark, Finland, the Netherlands, Norway, Sweden, and Switzerland. The contributors to this book investigate the various trajectories of these countries' economies, with particular consideration devoted to their welfare systems, corporate governance, and labor markets from the early 1990s to the economic crisis of 2008. Importantly,The Changing Political Economies of Small West European Countriesalso investigates various nations as possible socio-economic models for pan-European capitalism.

In molecular double-slit experiments, the interference between emitted core electrons of diatomic molecules gives rise to oscillations in the observed electron intensity. Here, we explore this behaviour for photoelectrons emitted from CO and N 2 by soft X-ray ionization in the molecular frame, and we argue that in addition to the undisturbed emission process, intramolecular scattering can lead to electron interference between the scattered and unscattered wave in two ways: two-centre interference between two spatially coherent emitters and one-centre self-interference. The latter is the signature of a loss of spatial coherence. The spatial scale over which the transition from two-centre to one-centre coherence occurs is the de Broglie wavelength of the scattered photoelectron in units of the bond length. These results highlight the fact that the molecular double slit is based on two independent uncertainty principles, Δ p x Δ x and Δ E Δ t , the second of which causes ongoing tunnelling between the two centres, even after the collapse of the electron wavefunction in real space. Similar to electrons passed through a double-slit apparatus, photoelectrons emitted coherently from both atoms of a diatomic molecule can exhibit interference patterns. But when coherence between the two atoms is lost, effects are shown to come into play that are unique to the ‘molecular double-slit’ experiment.

Why did some economies experience a boom in the 1990s? Employment 'Miracles' comparatively analyses select miracle economies. The contributors to the volume critically analyze how the small size and institutional structure of seven countries like the Netherlands, Denmark and Ireland accounted for their success and status as economic models. Comparisons with the American and German markets reveal how differing policies - liberal versus corporatist/social democratic - determine job growth and levels of income inequality and poverty. The book also stresses the explanatory relevance of lucky circumstances such as the housing price bubble. Employment 'Miracles' is an important resource for political scientists and economists in their study of employment development. Was de 'miraculeuze' ontwikkeling van de werkgelegenheid in de jaren '90 en net na de eeuwwisseling in onder andere Australië, Nederland en Denemarken inderdaad een wonder, of lag hieraan een uitgekiende strategie ten grondslag? Meestal wordt de oorzaak gezocht in het economisch beleid en de loonmatiging zoals vastgelegd in cao's, die een toenemende export en een afnemende werkloosheid tot gevolg zouden hebben gehad. Dit vijfde deel in de serie \"http://www.aup.nl/do.php?a=show_visitor_booklist&b=series&series=29\">Changing Welfare States laat zien dat toevallige omstandigheden minstens zo belangrijk zijn voor de banengroei als een weloverwogen beleid. Opvallend is vooral de invloed van een sterke huizenmarkt op de economische groei en werkgelegenheid. Loonmatiging, vaak beschouwd als doorslaggevende factor, maakt daarentegen weinig verschil. Hetzelfde geldt voor neoliberale stokpaardjes als het snijden in de uitkeringen en flexibilisering van de arbeidsmarkt om een sterke concurrentiepositie te behouden. Becker en Schwartz laten zien dat de meeste van de onderzochte landen, vooral Scandinavische, door de handhaving van een genereus sociaal bestel een reëel alternatief bieden voor de dominante liberale weg naar werkgelegenheidsgroei.

Because of inversion symmetry and particle exchange, all constituents of homonuclear diatomic molecules are in a quantum mechanically non-local coherent state; this includes the nuclei and deep-lying core electrons. Hence, the molecular photoemission can be regarded as a natural double-slit experiment 1 : coherent electron emission originates from two identical sites, and should give rise to characteristic interference patterns 2 . However, the quantum coherence is obscured if the two possible symmetry states of the electronic wavefunction (‘ gerade ’ and ‘ ungerade ’) are degenerate; the sum of the two exactly resembles the distinguishable, incoherent emission from two localized core sites. Here we observe the coherence of core electrons in N 2 through a direct measurement of the interference exhibited in their emission. We also explore the gradual transition to a symmetry-broken system of localized electrons by comparing different isotope-substituted species—a phenomenon analogous to the acquisition of partial ‘which-way’ information in macroscopic double-slit experiments 3 .

Interference patterns are generated when light from a point source passes through two parallel slits. Electrons emitted from diatomic molecules produce analogous patterns, but these couldn't be observed directly — until now.