A superheated Na cell for X-ray photoionization experiments

The performance of a superheated alkali vapor cell, with a geometry suitable for X-ray photoionization experiments, is described. An internal heater was used to superheat sodium vapor in a split-wick heat pipe. At a Na pressure of 20 Torr, the transmission through the cell in the region of the C - X...

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Published in:Applied Physics B Photophysics and Laser Chemistry 1984-10, Vol.35 (2), p.65-69
Main Authors: WISOFF, P. J. K, CARO, R. G
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Atomic properties and interactions with photons
Atomic spectra
Exact sciences and technology
Physics
Visible and ultraviolet spectra
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description The performance of a superheated alkali vapor cell, with a geometry suitable for X-ray photoionization experiments, is described. An internal heater was used to superheat sodium vapor in a split-wick heat pipe. At a Na pressure of 20 Torr, the transmission through the cell in the region of the C - X molecular band of Na2 increased to 50 percent from the 5 percent observed when the cell was operated in a conventional heat-pipe mode. In the presence of a Na atom density of 2 x 10 to the 17th per cu cm, the average molecular density over the length of the cell was measured to be 2.5 x 10 to the 15th per cu cm. In the hot central region of the superheated cell, the molecule density was predicted to have been reduced by a factor of 50 to 3 x 10 to the 14th per cu cm.
doi_str_mv 10.1007/BF00697424
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subjects Atomic and molecular physics
Atomic properties and interactions with photons
Atomic spectra
Exact sciences and technology
Physics
Visible and ultraviolet spectra
title A superheated Na cell for X-ray photoionization experiments
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