Peculiarities of quasicontinuous mediums

Guided quasicontinuous atom laser.

We report the first realization of a guided quasicontinuous atom laser by rf outcoupling a Bose-Einstein condensate from a hybrid optomagnetic trap into a horizontal atomic waveguide. This configuration allows us to cancel the acceleration due to gravity and keep the de Broglie wavelength constant at 0.5 microm during 0.1 s of propagation. We also show that our configuration, equivalent to pigt...

Bronchographic Contrast Mediums.

In a study of 102 bronchograms for purposes of comparing the contrast medium Visciodol(R) (a mixture of iodized peanut oil and powdered sulfanilamide) with Iodochlorol(R) (an iodized poppyseed oil), it was observed that Visciodol is more readily administered, produces better bronchograms with less alveolar filling and clears from the lungs far more rapidly and completely than does Iodochlorol. ...

Stories in Between: Narratives and Mediums @ Play

Quasicontinuous Domains and the Smyth Powerdomain

In Domain Theory quasicontinuous domains pop up from time to time generalizing slightly the powerful notion of a continuous domain. It is the aim of this paper to show that quasicontinuous domains occur in a natural way in relation to the powerdomains of finitely generated and compact saturated subsets. Properties of quasicontinuous domains seem to be best understood from that point of view. Th...

Quasicontinuous atom laser in the presence of gravity.

We analyze the extraction from a trapped Bose-Einstein condensate to a nontrapping state of a coherent atomic beam and its subsequent fall, at T = 0 K. Our treatment fully takes gravity into account but neglects the mean-field potential exerted on the free falling beam by the trapped atoms. We derive analytical expressions for the output rate and the output mode of the quasicontinuous "atom las...