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in subjects: "Holography"  
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(Hadamard Raman imaging)

Description: We have used newly developed holographic notch filters for obtaining both Stokes and anti-Stokes Raman images. The filters can be used as close as {plus minus}70 cm{sup {minus}1} from the Rayleigh line. We have demonstrated that they are insensitive to polarization, have 80% transmission across their clear apertures and block laser light by 10{sup 4}. The devices now have replaced sharp-cut glass filters on our microscope. We have successfully developed multispectral control and display softwar… more
Date: January 1, 1991
Partner: UNT Libraries Government Documents Department
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Possibilities for x-ray holography using synchrotron radiation

Description: Since the theoretical and experimental demonstrations of the effectiveness of soft x-rays in imaging biological material there has been considerable study given to the prospects for further development of the presently existing techniques. This has been motivated to a large extent by advances in source technology, particularly the use of undulators on electron storage rings and recent improvements in short wavelength lasers. The present author has carried out theoretical evaluations of the poss… more
Date: November 1, 1983
Creator: Howells, M.R.
Partner: UNT Libraries Government Documents Department
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Nondestructive-evaluation needs for coal liquefaction

Description: Nondestructive-evaluation (NDE) needs for coal liquefaction have been identified by acquiring information from site visits, a literature reveiw, and discussions with government personnel. Nondestructive evaluation has been highly rated in importance as a way to help alleviate problems in coal-conversion systems. The primary problems are associated with highly erosive and corrosive slurries being transferred throughout the coal-conversion process. Applicable NDE techniques for both preservice an… more
Date: September 1, 1977
Creator: Kupperman, D S
Partner: UNT Libraries Government Documents Department
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Femtosecond Time-Delay X-Ray Holography

Description: X-ray free-electron lasers (XFELs) will produce photon pulses with a unique and desirable combination of properties. Their short X-ray wavelengths allow penetration into materials and the ability to probe structure at and below the nanometer scale. Their ultra-short duration gives information about this structure at the fundamental time-scales of atoms and molecules. The extreme intensity of the pulses will allow this information to be acquired in a single shot, so that these studies can be car… more
Date: October 24, 2007
Creator: Chapman, H N
Partner: UNT Libraries Government Documents Department
open access

Direct to Digital Holography

Description: In this Cooperative Research and Development Agreement (CRADA), Oak Ridge National Laboratory (ORNL) assisted nLine Corporation of Austin, TX in the development of prototype semiconductor wafer inspection tools based on the direct-to-digital holographic (DDH) techniques invented at ORNL. Key components of this work included, testing of DDH for detection of defects in High Aspect Ratio (HAR) structures, development of image processing techniques to enhance detection capabilities through the use … more
Date: September 30, 2007
Creator: Bingham, P.R. & Tobin, K.W.
Partner: UNT Libraries Government Documents Department
open access

Direct to Digital Holography

Description: In this CRADA, Oak Ridge National Laboratory (ORNL) assisted nLine Corporation of Austin, TX in the development of prototype semiconductor wafer inspection tools based on the direct-to-digital holographic (DDH) techniques invented at ORNL. Key components of this work included, development of the first prototype named the Visible Alpha Tool (VAT) that uses visible spectrum illumination of 532 nm, assist in design of second prototype tool named the DUV Alpha Tool (DAT) using deep UV (266 nm) illu… more
Date: June 15, 2003
Creator: Bingham, P.R. & Tobin, K.W.
Partner: UNT Libraries Government Documents Department
open access

Direct to Digital Holography

Description: In this CRADA, Oak Ridge National Laboratory (ORNL) assisted nLine Corporation of Austin, TX in the development of prototype semiconductor wafer inspection tools based on the direct-to-digital holographic (DDH) techniques invented at ORNL. Key components of this work included, testing of DDH for detection of defects in High Aspect Ratio (HAR) structures, development of image processing techniques to enhance detection capabilities through the use of both phase and intensity, and development of m… more
Date: June 15, 2002
Creator: Bingham, P.R. & Tobin, K.W.
Partner: UNT Libraries Government Documents Department
open access

(Diffraction gratings used in x-ray spectroscopy): Final report

Description: This subcontract was initiated in order to facilitate the development at MIT of technologies for fabricating the very fine diffraction grating required in x-ray spectroscopy at Lawrence Livermore Laboratory (LLL). These gratings are generally gold transmission gratings with spatial periods of 200 nm or less. The major focus of our efforts was to develop a means of fabricating gratings of 100 nm period. We explored two approaches: e-beam fabrication of x-ray lithography masks, and achromatic hol… more
Date: November 1, 1988
Creator: Smith, H.I.
Partner: UNT Libraries Government Documents Department
open access

Shot report, Holo-17-Holo-22 Rex-9

Description: We report on a series of holographic shots using explosives to generate ejecta from lead. These experiments covered a range of geometries including point initiation and plane wave initiation for the H.E., and using a gas-fill in the cavity where the ejecta was produced. The final experiment, Rex-9 was a Fabry-Perot experiment at Site 300 which provided the velocity history of the lead surface for the purpose of normalizing the code being used to calculate the position of the lead surface in the… more
Date: October 25, 1990
Creator: McMillan, C.; Whipkey, R. & Vance, P.
Partner: UNT Libraries Government Documents Department
open access

Nondestructive evaluation of electron-beam braze joins

Description: A nondestructive evaluation (NDE) program has been carried out using holographic interferometry, microradiography, and eddy current testing for the inspection of electron beam braze joining of dissimilar metals. Stainless steel tubing was joined to a gold-copper disk using a Cusil (copper/silver) brazing alloy. Holographic interferometry provided an indirect measure of strength by detecting the plastic deformation occurring as a result of applying a stress. Microradiography with the aid of comp… more
Date: August 18, 1981
Creator: Boyd, D.M.; Shackelford, J.F.; Maxfield, B.W. & Taylor, G.M.
Partner: UNT Libraries Government Documents Department
open access

Pacific Northwest Laboratory annual report for 1978 to the DOE Assistant Secretary for Environment. Part 4. Physical sciences.

Description: Separate abstracts were prepared for each of the five sections of this report as follows: coal; fission; geothermal; oil shale; and multitechnology. In addition, abstracts were prepared for six of the nine individual subsections of the section on fission, that relate to dosimetric studies. (ERB)
Date: February 1, 1979
Creator: Nielsen, J. M.
Partner: UNT Libraries Government Documents Department
open access

Online monitoring of laserpulses using the GPIB-interface of a Tektronix 2430 Digital Storage Oscilloscope

Description: One of the monitoring aspects of holography at the 15 foot Bubble Chamber is the online checking of the lightoutput of the JK2000 ruby laser. Ideally the lightoutput should be a squared pulse in time. Spikes, pre- and postlasing (i.e., lasing before and after the squared pulse) can have a negative influence on the holograms. The scheme for monitoring the lightoutput is discussed in this paper as well as the programming codes and experimental setup necessary to enhance the holography. 1 fig.
Date: October 1, 1987
Creator: Verluyten, L. & Peters, M. W.
Partner: UNT Libraries Government Documents Department
open access

(X-ray microimaging by diffractive techniques)

Description: Progress is reported on high resolution x-ray techniques to image wet biological specimens. The minimization of radiation damage to the specimens and holographic imaging are described. (CBS)
Date: January 1, 1991
Partner: UNT Libraries Government Documents Department
open access

Human genome sequencing with direct x-ray holographic imaging

Description: Direct holographic imaging of biological materials is widely applicable to the study of the structure, properties and action of genetic material. This particular application involves the sequencing of the human genome where prospective genomic imaging technology is composed of three subtechnologies, name an x-ray holographic camera, suitable chemistry and enzymology for the preparation of tagged DNA samples, and the illuminator in the form of an x-ray laser. We report appropriate x-ray camera, … more
Date: June 8, 1993
Creator: Rhodes, C.K.
Partner: UNT Libraries Government Documents Department
open access

Quarterly progress report, July-September 1982

Description: Our ability to characterize fuel shells was greatly improved this quarter by the installation of the Eikonix Image Acquisition System. Linking this system to the VAX 11/750 computer permits real-time imaging of radiographic plates. Analysis of the thermal transport experimental campaign continued. We found that the mass-ablation rate was significantly higher for spherical targets than for planar targets. The ablation rate was also greater for 0.53 ..mu..m light used in similar experiments perfo… more
Date: January 1, 1982
Partner: UNT Libraries Government Documents Department
open access

Theory of x-ray holography including phase and amplitude contrast and finite transfer functions

Description: We present the theory in broadly the same way as for visible holography, specializing to the Gabor, in-line case with plane-wave illumination, but allowing phase and amplitude contrast and a fairly general transfer function. Much of this theory is treated by a number of earlier authors but none with the particular choice of issues that we wish to address. These are those mentioned plus numerical reconstruction from a digitized hologram and of course application to the soft x-ray spectral range.… more
Date: January 1, 1989
Creator: Howells, M.R.
Partner: UNT Libraries Government Documents Department
open access

Experimental investigation of synfuel spray characteristics and combustion dynamics. Quarterly technical progress report for the period October 1 - December 31, 1980

Description: During the initial report period, efforts were directed primarily towards the design and construction of the cold spray rig. Air flow, fuel flow, and optical requirements were identified. These provided the basis for sizing the spray chamber, air flow ducting, blowers, fuel system and general optical configurations. Detailed design of major systems was completed, major hardware components were ordered, and subsystem assembly was initiated. In addition to the planned design and assembly work on … more
Date: January 1, 1981
Partner: UNT Libraries Government Documents Department
open access

Hadamard transform imaging

Description: We have constructed a Hadamard transform Raman microscopic imaging system, and have developed it to a high definition (64K pixel) technique. We have demonstrated multispectral Raman imaging and developed the first three-dimensional (digital confocal) Raman imaging. We have explored the systematic errors in Hadamard multiplexing techniques and developed corrections. We have used our Raman microscope techniques to explore defect distributions on graphite electrodes and damage effects on SERS-acti… more
Date: January 1, 1992
Creator: Morris, M.D.
Partner: UNT Libraries Government Documents Department
open access

Particulate processes in pulverized coal flames. Quarterly technical progress report, October-December 1980

Description: Major attention has been focused on the design and construction of the experiment. The design of two dilute coal stream reactor heads was completed as was the fabrication of one of the reactor heads. A parametric analysis of furnace design was conducted to allow operating conditions and insulation configurations to be selected to provide an axial temperature drop of less than 200/sup 0/K/m with a 1-second residence time in the reactor. Final design of the reactor body is in progress. Design of … more
Date: January 1, 1981
Partner: UNT Libraries Government Documents Department
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Holography explained in the language of potential scattering

Description: Holography is explained in the language of potential scattering kinematics (whereas usually the formalism of wave optics is used). This approach is probably more natural for those who were trained as atomic, nuclear, etc., physicists, but are now attracted by the possibility of x-ray holography. Classical optical instruments are hardly mentioned, and the approximations usually connected with them are not used. Many of the results derived in this report are not new. 5 figures
Date: April 1, 1978
Creator: Csonka, P.L.
Partner: UNT Libraries Government Documents Department
open access

Experimental investigation of synfuel spray characteristics and combustion dynamics. Quarterly technical progress report, January 1-March 31, 1981

Description: Objective is to study both petroleum-based oils and synthetic fuels in spray combustion, by using advanced optical diagnostic techniques to study the processes of fuel injection and atomization, droplet ignition, and spray flame combustion. During this period, efforts were focused on the completion of the cold spray test facility, the design of the monodisperse droplet combustor, and the construction of an oil burner with the gathering of preliminary holography data. (DLC)
Date: April 1, 1981
Partner: UNT Libraries Government Documents Department
open access

Beam line for experiments with coherent soft x-rays

Description: The advantages of coherent soft x-rays for three-dimensional imaging of biological specimens are discussed, the x-ray source requirements are described, and the general design of the beam line and its optical system are given. (WHK)
Date: December 1, 1982
Creator: Howells, M.R.; Kirz, J. & Krinsky, S.
Partner: UNT Libraries Government Documents Department
open access

KMSF x-ray laser experiments. Task No. 2. Final report

Description: This report summarizes work done at KMS Fusion, Inc. in support of the x-ray laser experimental program at Lawrence Livermore National Laboratory. It follows an earlier report of Task No. 1 of the subject purchase order. As in that report, most of the original data has been reviewed by the LLNL technical staff, with much of it transferred to LLNL for analysis. Consequently, this report does not include a detailed presentation of the data.
Date: July 1, 1984
Creator: Charatis, G.
Partner: UNT Libraries Government Documents Department
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