Study of the electronic and adsorption structure of Cs and H coadsorption on Si(100)2×1

Shimizu, M; Hasebe, Hiroaki; Hongo, Shozo; Ojima, Kaoru; Urano, Toshio

doi:10.1016/s0169-4332(98)00069-5

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Theory Of Interaction Of Cs Atoms On Surfaces1

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2022

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“…These interactions strongly depend on the temperature, and above a fraction of monolayer (a coverage θ < 0.1 typically), surface-clustering and coalescence occur. [94][95][96][97] A better theory to estimate the number of multilayers is the BET (Brunauer-Emmett-Teller) model. 98,99 It links the surface coverage θ to the ratio p = P/PW between the vapor pressure P in the oven crucible (so at the temperature of the oven's reservoir T) and the saturating vapor pressure PW at the wall surface temperature…”

Section: Theory Of Interaction Of Cs Atoms On Surfacesmentioning

confidence: 99%

Comparative analysis of recirculating and collimating cesium ovens

Hahn

Thomas

Boucher

et al. 2022

Review of Scientific Instruments

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We have performed a study of several cesium oven designs. A comparison between recirculating (or sticking-wall) and collimating (or re-emitting-wall) ovens is made in order to extract the most efficient design in terms of beam brightness. Unfortunately, non-reproducible behaviors have been observed, and the most often observed output flux is similar to the sticking-wall case, which is the lowest theoretical value of the two cases, with a beam brightness close to 1018 at. sr−1 s−1 cm−2. The reason of this universally observed behavior is unclear despite having tested several materials for the collimating tube. Conclusion on possible improved design based on sticking of cesium on several (un)cleaned surfaces is given.

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