276 research outputs found
PSN3 MANAGEMENT AND SOCIO ECONOMIC IMPACT OF ATOPIC DERMATITIS (AD) IN FRANCE:THE ELIPANEL STUDY
PCV4 COST-EFFECTIVENESS ANALYSIS OF N-3 POLYUNSATURED FATTY ACIDS (PUFA) AFTER MYOCARDIAL INFARCTION, FRENCH ASSESSMENT
Two-color ionization of hydrogen by short intense pulses
Photoelectron energy spectra resulting by the interaction of hydrogen with
two short pulses having carrier frequencies, respectively, in the range of the
infrared and XUV regions have been calculated. The effects of the pulse
duration and timing of the X-ray pulse on the photoelectron energy spectra are
discussed. Analysis of the spectra obtained for very long pulses show that
certain features may be explained in terms of quantum interferences in the time
domain. It is found that, depending on the duration of the X-ray pulse, ripples
in the energy spectra separated by the infrared photon energy may appear.
Moreover, the temporal shape of the low frequency radiation field may be
inferred by the breadth of the photoelectron energy spectra.Comment: 12 pages, 8 figure
PSN21 IMPACT OF CORTICOSTEROID-SPARING EFFECT OF AN EMOLLIENT MILK ON FAMILY'S QUALITY OF LIFE OF INFANTS AFFECTED BYATOPIC DERMATITIS
Production of positronium chloride: A study of the charge exchange reaction between Ps and Cl
We present cross sections for the formation of positronium chloride (PsCl) in
its ground state from the charge exchange between positronium (Ps) and chloride
(Cl) in the range of 10 meV - 100 eV Ps energy. We have used theoretical
models based on the first Born approximation in its three-body formulation. We
simulated the collisions between Ps and Cl using ab-initio methods at both
mean-field and correlated levels extrapolated to the complete basis set limit.
We have investigated Ps excited states up to . The results suggest that
the channel Ps() is of particular interest for the production of PsCl in
the ground state, and shows that an accurate treatment of the electronic
correlation leads to a significant change in the global shape of the PsCl
production cross section with respect to the mean-field level.Comment: 13 Pages, 7 Figures, 3 Table
Vacuum-stimulated cooling of single atoms in three dimensions
Taming quantum dynamical processes is the key to novel applications of
quantum physics, e.g. in quantum information science. The control of
light-matter interactions at the single-atom and single-photon level can be
achieved in cavity quantum electrodynamics, in particular in the regime of
strong coupling where atom and cavity form a single entity. In the optical
domain, this requires permanent trapping and cooling of an atom in a
micro-cavity. We have now realized three-dimensional cavity cooling and
trapping for an orthogonal arrangement of cooling laser, trap laser and cavity
vacuum. This leads to average single-atom trapping times exceeding 15 seconds,
unprecedented for a strongly coupled atom under permanent observation.Comment: 4 pages, 4 figure
Measurement of nuclide cross-sections of spallation residues in 1 A GeV 238U + proton collisions
The production of heavy nuclides from the spallation-evaporation reaction of
238U induced by 1 GeV protons was studied in inverse kinematics. The
evaporation residues from tungsten to uranium were identified in-flight in mass
and atomic number. Their production cross-sections and their momentum
distributions were determined. The data are compared with empirical
systematics. A comparison with previous results from the spallation of 208Pb
and 197Au reveals the strong influence of fission in the spallation of 238U.Comment: 20 pages, 10 figures, background information at
http://www-wnt.gsi.de/kschmidt
Energy measurement of prompt fission neutrons in 239Pu(n,f) for incident neutron energies from 1 to 200 MeV
Prompt fission neutron spectra in the neutron-induced fission of 239Pu have been measured for incident neutron energies from 1 to 200 MeV at the Los Alamos Neutron Science Center. Preliminary results are discussed and compared to theoretical model calculation
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