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You searched on: Author: zachary levine Sorted by: title

Displaying records 1 to 10 of 114 records.
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1. A Bayesian approach to tomography of multiply scattered beams, ed. by A. Bouman, E.L. Miller and I. Pollack
Published: 1/1/2006
Author: Zachary H Levine

2. A Fixed-Memory Moving, Expanding Window for Obtaining Scatter Corrections in X-Ray CT and Other Stochastic Averages
Published: 5/30/2015
Authors: Zachary H Levine, Adam L Pintar
Abstract: A simple algorithm for averaging a stochastic sequence of 1D arrays in a moving, expanding window is provided. The samples are grouped in bins which increase exponentially in size so that a constant fraction of the samples is retained at any point i ...

3. A Low Cost Fiducial Reference for Computed Tomography
Published: 11/11/2008
Authors: Zachary H Levine, Steven E Grantham, Daniel S Sawyer, Anthony P Reeves, David F Yankelevitz
Abstract: Rationale and Objectives. To detect the growth in lesions, it is necessary to ensure that the apparent changes in size are above the noise floor of the system. By introducing a fiducial reference, it may be possible to detect smaller changes in le ...

4. A Low-Cost Density Reference Phantom for Computed Tomography
Published: 1/2/2009
Authors: Zachary H Levine, Ming-Dong Li, Anthony P Reeves, David F Yankelevitz, Joseph J Chen, Eliot L Siegel, Adele P Peskin, Diana N. Zeiger
Abstract: We have characterized a commercially-available polyurethane foam which is marketed for modeling parts in the aircraft, automotive, and related industries. We find that the foam may be suitable for use as a density reference standard in the range bel ...

5. A Transmission X-Ray Microscope Based on Secondary-Electron Imaging,
Published: 1/1/1997
Authors: R N. Watts, S D Liang, Zachary H Levine, Thomas B Lucatorto, F Polack, M R Scheinfein

6. Ab Initio Calculations of Mean Free Paths and Stopping Powers
Published: 1/2/2006
Authors: A P Sorini, J. Kas, J J Rehr, M P Prange, Zachary H Levine
Abstract: An approach is presented for theortical calculations of inelastic losses in solids over a broad energy range. The method is based on a many-pole model dielectric function, which is derived from ab initio calculations of optical constants using a rea ...

7. Ab initio calculations of mean free paths and stopping powers,
Published: 1/1/2006
Authors: A P Sorini, J. Kas, J J Rehr, M P Prange, Zachary H Levine

8. Absolute Calibration of a Variable Attenuator Using Few-Photon Pulses
Published: 6/12/2015
Authors: Zachary H Levine, Boris L. Glebov, Adam L Pintar, Alan L Migdall
Abstract: We demonstrate the ability to calibrate a variable optical attenuator directly at the few photon level using a Superconducting Transition Edge Sensor (TES). Because of the inherent linearity of photon number resolving detection, no ex- ternal cali ...

9. Accurate Pattern Registration for Integrated Circuit Tomography
Published: 7/1/2001
Authors: Zachary H Levine, S Grantham, S Neogi, S P Frigo, I McNulty, C C Retsch, Y Wang, Thomas B Lucatorto
Abstract: As part of an effort to develop high resolution microtomography for engineered structures, a two-level copper integrated circuit interconnect was imaged using 1.83 keV x-rays at 14 angles employing a full-field Fresnel zone plate microscope. A major ...

10. Accurate pattern registration for integrated circuit tomography
Published: 1/1/2001
Authors: Zachary H Levine, Steven E Grantham, S Neogi, S P Frigo, I McNulty, C C Retsch, Ying-ju Wang, Thomas B Lucatorto

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