2,508 research outputs found
Dielectric molding apparatus Patent
Dielectric apparatus for heating, fusing, and hardening of organic matrix to form plastic material into shaped produc
Vibrational Feshbach Resonances Mediated by Nondipole Positron-Molecule Interactions
Measurements of energy-resolved positron-molecule annihilation show the
existence of positron binding and vibrational Feshbach resonances. The existing
theory describes this phenomenon successfully for the case of infrared-active
vibrational modes which allow dipole coupling between the incident positron and
the vibrational motion. Presented here are measurements of positron-molecule
annihilation made using a recently developed cryogenic positron beam capable of
significantly improved energy resolution. The results provide evidence of
resonances associated with infrared-inactive vibrational modes, indicating that
positron-molecule bound states may be populated by nondipole interactions. The
anticipated ingredients for a theoretical description of such interactions are
discussed.Comment: 5 pages, 2 figures, Phys. Rev. Lett. (in press
LIMS Instrument Package (LIP) balloon experiment: Nimbus 7 satellite correlative temperature, ozone, water vapor, and nitric acid measurements
The Limb Infrared Monitor of the Stratosphere (LIMS) LIP balloon experiment was used to obtain correlative temperature, ozone, water vapor, and nitric acid data at altitudes between 10 and 36 kilometers. The performance of the LIMS sensor flown on the Nimbus 7 Satellite was assessed. The LIP consists of the modified electrochemical concentration cell ozonesonde, the ultraviolet absorption photometric of ozone, the water vapor infrared radiometer sonde, the chemical absorption filter instrument for nitric acid vapor, and the infrared radiometer for nitric acid vapor. The limb instrument package (LIP), its correlative sensors, and the resulting data obtained from an engineering and four correlative flights are described
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