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Influence of Electric Fields on the Rate of Growth of Molecular Solids (1968)

SZYMANSKI, A. ; LABES, M. M.

[s.l.] : Nature Publishing Group

Nature 220 (1968), S. 159-161

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ISSN: 1476-4687

Source: Nature Archives 1869 - 2009

Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics

Notes: [Auszug] The experiments were conducted by continuous vacuum evaporation of aromatic hydrocarbons from a Knudsen cell at pressures of 5 x 10~5 atmospheres or less with a crystal mounted on a stirrup of a Cahn EG electro-balance. Fig. 1 is a sketch of the apparatus, the most troublesome feature of which is ...

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1038/220159a0

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New method of elaboration of the lidar signal (2000)

Stelmaszczyk, K. ; Czyzewski, A. ; Szymanski, A. ; [et al.]

Springer

Applied physics 70 (2000), S. 295-299

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ISSN: 1432-0649

Keywords: PACS: 42.68.Wt; 42.68.Ay

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract. In lidar measurements noise and fluctuations strongly affect the results. The reason is a rapid decrease of the signal-to-noise ratio with an increase of distance. The differential absorption lidar (DIAL) is particularly sensitive to the signal instabilities. In this paper we present a method of the signal acquisition that is suitable for registration of both large light fluxes and single photons. We also present new method of solution of the DIAL equations. Compared to the traditional algorithm used for signal elaboration our procedures are much more stable and they are able to increase the effective range of lidar measurements.