Journal of Scientific Instruments

Thin solid-hydrogen disks with a lifetime of about 10 min were produced by freezing a liquid-hydrogen film spread over a hole in a liquid-helium-cooled condensation plate. The transparent self-supporting disks have a diameter of 2 mm, and they diminish in thickness from initially about 1 mm to zero as a result of slow vaporization. The method described here enables materials which are gaseous under normal conditions to be produced as solid foils in high vacuum. This can be done in quick succession by means of the simple apparatus described. Such foils can be used, for example, as targets for producing plasma by laser light.

R. Sigel

H. Krause

S. Witkowski

Production of Thin Solid-Hydrogen Foils for Use as Targets in High Vacuum

用于高真空靶材的薄固态氢箔的生产

Analyses of the spatial resolution of the Kovasznay vorticity meter and of arrays for measuring velocity derivatives in isotropic turbulence are presented. Pao's three-dimensional spectrum is used, allowing calculations of the measured values of the one-dimensional vorticity spectrum and mean-square velocity derivatives to be compared with their predicted values. It is found that for accurate measurement the array size should be of the order of the Kolmogorov microscale of the turbulence field.

J. C. Wyngaard

Spatial resolution of the vorticity meter and other hot-wire arrays

涡度计及其他热线阵列的空间分辨率

We report a first combination of diamond anvil cell radialx-ray diffraction with in situ laser heating. The laser-heating setup ofALS beamline 12.2.2 was modified to allow one-sided heating of a samplein a diamond anvil cell with an 80 W yttrium lithium fluoride laser whileprobing the sample with radial x-ray diffraction. The diamond anvil cellis placed with its compressional axis vertical, and perpendicular to thebeam. The laser beam is focused onto the sample from the top while thesample is probed with hard x-rays through an x-ray transparentboron-epoxy gasket. The temperature response of preferred orientation of(Fe,Mg)O is probed as a test experiment. Recrystallization was observedabove 1500 K, accompanied by a decrease in stress.

Martin Kunz

Wendel A. Caldwell

Lowell Miyagi

Hans-Rudolf Wenk

In situ laser heating and radial synchrotron X-ray diffraction ina diamond anvil cell

原位激光加热与金刚石对顶砧中的径向同步辐射X射线衍射

原位激光加热与金刚石砧室中的径向同步辐射X射线衍射

原位激光加热与金刚石压腔中的径向同步辐射X射线衍射

金刚石压砧中的原位激光加热与径向同步辐射X射线衍射

Publication Information	Publisher: Institute of Physics and the Physical Society，Publishing cycle: ，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 1923，Proportion of original research papers: ，Self Citation Rate:， Gold OA Rate:

Journal of Scientific Instruments

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Production of Thin Solid-Hydrogen Foils for Use as Targets in High Vacuum

Spatial resolution of the vorticity meter and other hot-wire arrays

In situ laser heating and radial synchrotron X-ray diffraction ina diamond anvil cell

Production of Thin Solid-Hydrogen Foils for Use as Targets in High Vacuum

Spatial resolution of the vorticity meter and other hot-wire arrays

In situ laser heating and radial synchrotron X-ray diffraction ina diamond anvil cell

In situ laser heating and radial synchrotron X-ray diffraction ina diamond anvil cell

In situ laser heating and radial synchrotron X-ray diffraction ina diamond anvil cell

In situ laser heating and radial synchrotron X-ray diffraction ina diamond anvil cell

In situ laser heating and radial synchrotron X-ray diffraction ina diamond anvil cell