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8 Mar 1999

Volume 74, Issue 10, pp. 1355-1498

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A refractive collimator for synchrotron radiation

A. Q. R. Baron, Y. Kohmura, Y. Ohishi, and T. Ishikawa

Appl. Phys. Lett. 74, 1492 (1999); http://dx.doi.org/10.1063/1.123591 (3 pages) | Cited 6 times

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We demonstrate that a simple and inexpensive plastic refractive lens may be used to collimate synchrotron radiation. The divergence of an 18.5 keV beam of radiation from an undulator at SPring-8 is reduced from 11 μrad, full width at half maximum, to less than 3.5 μrad, while preserving 75% of the incident intensity. © 1999 American Institute of Physics.
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07.85.Qe Synchrotron radiation instrumentation
41.60.Ap Synchrotron radiation

Laser-induced capillary wave at air/liquid interfaces in time domain

Kaori Yasumoto, Noboru Hirota, and Masahide Terazima

Appl. Phys. Lett. 74, 1495 (1999); http://dx.doi.org/10.1063/1.123592 (3 pages) | Cited 6 times

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The capillary wave at air/liquid interfaces is detected by the forced Brillouin and Rayleigh light scattering in the time domain. The forced Brillouin scattering signal from the air/water surface shows clear oscillation. The wave is not pure sine or cosine wave but it shows dual features. A strongly overdamped signal is observed from the air/hexanol surface in 1.4–2.0×106 m−1, while the signal shows a trace of oscillation in a lower wave number region. The oscillation also indicates the existence of two waves. The mechanism to create the capillary wave by the photothermal effect is discussed. © 1999 American Institute of Physics.
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47.35.-i Hydrodynamic waves
78.20.N- Thermo-optic effects
78.20.nb Photothermal effects
78.35.+c Brillouin and Rayleigh scattering; other light scattering
68.03.Cd Surface tension and related phenomena
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