4 edition of Holographic interferometry of isolated deuterium plasmas produced by a CO2 laser found in the catalog.
Holographic interferometry of isolated deuterium plasmas produced by a CO2 laser
P. V. Gatenby
|Statement||[by] P.V. Gatenby and A.C. Walker.|
|Contributions||Walker, A. C. 1948-|
|The Physical Object|
|Pagination||11, (6)p. of plates :|
|Number of Pages||11|
Holographic Interferometry High Density Plasma Holographic Image Gold Disk High Power Laser Pulse These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm : G. E. Busch, R. R. Johnson, C. L. Shepard. Vol number 2 OPTICS COMMUNICATIONS 15 August CONVERGING SHOCK ON LASER PLASMA: DENSITY PROFILES BY HOLOGRAPHIC INTERFEROMETRY A. GIULIETTI, D. GIULIETTI *, M. LUCCHESI * and M. VASELLI Istituto di Fisica Atomica a Molecolare del CN.R., Pisa, Italy Received 25 April A double pulse ruby laser was used to obtain interference patterns from a laser produced plasma Cited by:
Holographic interferometry 1. 2. INTRODUCTION Holography is the name given to the process of wave front reconstruction and comes from the Greek words ‘holos’, meaning whole and ‘gramma’ meaning message. So it gives whole message. Digital holographic microscopy is digital holography applied to microscopy. Digital holographic microscopy distinguishes itself from other microscopy methods by not recording the projected image of the object. Instead, the light wave front information originating from the object is digitally recorded as a hologram, from which a computer calculates the object image by .
A system based on digital holographic interferometry for the measurement of vibrations is presented. A high-power continuous laser (10 W) and a high-speed CCD camera are used. Hundreds of holograms of an object that has been subjected to dynamic deformation are recorded. The acquisition speed and the time of exposure of the detector are determined by . Advantages and Disadvantages of Holographic Interferometry. Interferometric methods for transparent objects offer, in comparison with other experimental methods, the following advantages. Holographic interferometry makes it possible to record the whole thermal or concentration field by using holographic interferometer.
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High density plasmas produced by colliding two laser produced carbon plasmas have been investigated interferometrically using holographic techniques. Electron densities remain in the region of 10 18 cm -3 for about by: 4. The technique has been applied to a picosecond laser produced plasma.
and the total number of electrons present in the plasma has been measured to be at least 5 x for a laser energy of joule. Holographic interferometry  represents a considerable advance in the well known technique of optical by: Laser holographic interferometry.
Laser holographic interferometry is a technique combining laser interferometry and holography. The principle of holography is based on the fact that, via simultaneously recording a reference light (laser) beam (split by a beam splitter) and a returned, scattered light beam from the surface of a target on a holographic plate.
Holographic interferometry is a highly efficient diagnostics for investigations of impulsive plasmas of large cross holographic method is based on the interference of two optical waves that passed through the object at different time moments, so that such interferogram records the changes of the object that appeCited by: 1.
Holographic recording of laser-induced plasma. PS by means of optical holographic interferometry. The integrity of samples was examined before and after irradiation in and nm (15 ns. Laser Doppler imaging. In off-axis configuration, with a slow camera and a laser diode, holographic interferometry is sensitive enough to enable wide-field, laser Doppler imaging of optical fluctuations in amplitude and phase, either with a slow or a fast camera.
A slow (e.g. video rate) camera will record time-averaged holographic interferograms which will result in. Resonant holographic interferometry of laser‐ablation plumes gated times and incident laser fluences. The plasma temperature is also estimated to.
3D LASER HOLOGRAPHIC INTERFEROMETRY MEASUREMENTS by Zhenhua Huang A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Mechanical Engineering) in The University of Michigan Doctoral Committee: Associate Professor Albert J.
Shih, Co-Chair Professor Jun Ni, Co-Chair. Laser Vibrometry by the holographic interferometry has become commonplace, The local vibration amplitude can be assessed by fringe counting, By sequential imaging of frequency side-bands, the issue of fringe counting has been alleviated. In this work, observations of plasma jets produced in a table top plasma focus device by means of optical and digital interferometry are shown.
The. The principle of holographic interferometry is illustrated by Fig. which displays a general arrangement for obtaining a hologram and reconstructing the wave recorded in it. As has been shown earlier, the interaction of the reconstructing wave with the pattern recorded in the hologram (Fig.
b) results in a reconstruction of the object wave. Holographic interferometry has been the most immediate, significant application of laser holography. For the first time, optical interferometric measurements can be made on non-optical surfaces; such as castings, pipes, panels, composites, etc., as well as through diffusely illuminated transparent scenes.
Experimental setup for the investigation of a laser produced hydrogen plasma using holographic interferometry. way. The solid hydrogen foil, which is in the form of a round disk, is located in a hole near the bottom of the vertical copper plate.
It is irradiated normally to its surface by the laser beam, which is incident from the by: 7. Freely falling deuterium pellets containing () x 10 to the 18th deuterium atoms were irradiated with a high power Nd laser and ionized.
For complete ionization of the pellet it is necessary to apply the laser energy in two consecutive pulses separated by a few hundred nanoseconds. The first laser pulse with only little energy disintegrates the pellet, whereas the Cited by: 3.
HOLOGRAPHY AND HOLOGRAPHIC INSTRUMENTS Many dif ferent types of holograms can be made by varying the location of the object relative to the recording medium, the directions and relative angles of the object and reference beams, and the wavefront curvature of these Size: 7MB.
A chain of aerosol-initiated CO2-laser-produced air-breakdown plasmas has been used to guide electrical discharges over distances of no more than about 2.
Application of holographic interferometry for plasma diagnostics. A N Zaidel' Section 4 gives a review of work on investigation of various plasmas—laser-induced sparks, laser jets, neutral current layers, G.
Toker "Pulsed two-exposure holographic interferometry of CO 2-laser plasma" IOFAN SSSR ArXiv e-print No. (Moscow. Three Types of holographic interferometry, being 1. Frozen Fringe 2.
Life Fringe 3. Time Averaged We will now look at these three types. A P P L I E D O P TIC S G R O U P D E P A R T MENT o f P H Y S I C S Holographic Interferometry Autumn Term.
Consideration is given to the application of holographic interferometry to measurement problems including stress analysis, mechanical vibrations, nondestructive testing, medical and dental research, fluid mechanics, heat and mass transfer, and plasma diagnostics.
Holographic interferometry provides a valuable and up-to-date source of information in this rapidly expanding field. The eight specialists' contributions cover the principles and methods currently in use.
The scope of the book has been limited to the study of opaque objects. Ample space has been devoted to a comprehensive treatment of the phenomena of fringe formation.
His major contributions were in soft x-ray measurements of million-degree electron temperatures (he made the first "two-foil" soft x-ray electron temperature measurements), including Bragg-crystal spectroscopy; optical and laser holographic interferometry for plasma densities and shapes; Riser scattering (for plasma electron temperature); Faraday rotation measurements of plasma.
Purchase Holographic Nondestructive Testing - 1st Edition. Print Book & E-Book. ISBNBook Edition: 1.Holographic microinterferometry is used to study plasmas produced by high‐intensity subnanosecond pulses from a Nd laser.
The probing pulse is frequency tripled to Å in order to reduce refractive errors due to steep density gradients and to reduce spatial resolution requirements. Measured electron densities as high as one‐fourth critical for μm are Cited by: