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Author: kevin coakley

Displaying records 31 to 40 of 54 records.
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31. Erratum: Modeling Detector Response for Neutron Depth Profiling
Published: 8/10/2003
Authors: Kevin J Coakley, R. G. Downing, George Paul Lamaze, H C Hofsass, C Ronning, J Biegel
Abstract: In a previous paper, we analyzed the Neutron Depth Profiling energy spectrum collected from a diamond-like carbon (DLC) sample doped with boron. Based on a numerical model for the Detector Response Function (DRF), we estimated a theoretical boron pr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50792

32. Two Aspects of Thin Film Analysis: Boron Profile and Scattering Length Density Profile
Published: 6/1/2003
Authors: Huaiyu H Chen-Mayer, George Paul Lamaze, Kevin J Coakley, Sushil K. Satija
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903301

33. Spatial Methods for Event Reconstruction in CLEAN
Published: 4/9/2003
Authors: Kevin J Coakley, D N Mckinsey
Abstract: In CLEAN (Cryogenic Low Energy Astrophysics with Noble gases), a proposed neutrino and dark matter detector, background discrimination is possible if one can determine the location of an event with high accuracy. Here, we develop spatial methods fo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50793

34. Estimation of Q-Factors and Resonant Frequencies
Published: 3/1/2003
Authors: Kevin J Coakley, Jolene D Splett, Michael D Janezic, R F Kaiser
Abstract: We estimate the quality factor Q and resonant frequency f^do^ of a microwave cavity based on resonance curve observations on an equally-spaced frequency grid. The observed resonance curve is the squared magnitude of an observed complex scattering pa ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=151782

35. Estimation of Q-factors and Resonant Factors
Published: 3/1/2003
Authors: Kevin J Coakley, Jolene D Splett, Michael D Janezic, Raian K. Kaiser
Abstract: We estimate the quality factor Q and resonant frequency f^d0^ of a microwave cavity based on resonance curve observations on an equally-spaced frequency grid. The observed resonance curve is the squared magnitude of an observed complex scattering par ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=31477

36. Supernova Observation Via Neutrino-Nucleus Elastic Scattering in the CLEAN Detector
Published: 2/1/2003
Authors: C J Horowitz, Kevin J Coakley, D N Mckinsey
Abstract: Development of large mass detectors for low energy neutrinos and dark matter may allow supernova detection via neutrino-nucleus elastic scattering. An elastic detector could observe a few, or more, events per ton for a galactic supernova at 10 kpc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50799

37. Estimation of Neutron Mean Wavelength From Rocking Curve Data
Published: 1/1/2003
Authors: Kevin J Coakley, Z Chowdhuri, W M. Snow, J M Richardson, Maynard S Dewey
Abstract: At NIST, an in-beam neutron lifetime experiment is underway. In part of the experiment, a neutron detector is calibrated. The accuracy of the detector calibration depends, in part, on how accurately the mean wavelength of a neutron beam can be esti ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=151787

38. Calibration of a Stopping Power Model for Silicon Based on Analysis of Neutron Depth Profiling and Secondary Ion Mass Spectrometry Measurements
Published: 6/1/2002
Authors: Kevin J Coakley, Huaiyu H Chen-Mayer, George Paul Lamaze, David S Simons, P E Thompson
Abstract: We measure the boron concentration versus depth profile within a silicon sample with four delta-doped planes by secondary ion mass spectrometry. In a neutron depth profiling (NDP) experiment, we illuminate the sample with a neutron beam. Nuclear re ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=151806

39. Estimation of the Neutron Lifetime: Comparison of Methods Which Account for Background
Published: 6/1/2002
Authors: Kevin J Coakley, Grace L Yang
Abstract: In the first stage of each run of a neutron lifetime experiment, a magnetic trap is filled with neutrons. In the second stage of each run, neutron decay events are observed. In a separate experiment of multiple runs, only background signals are mea ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=151781

40. Uncertainty of Oscilloscope Timebase Distortion Estimate
Published: 2/1/2002
Authors: Chih-Ming Wang, Paul D Hale, Kevin J Coakley, Tracy S. Clement
Abstract: We study several problems related to the characterization of the timebase in high-speed sampling oscilloscopes. First, we examine the bias of using the method of the first-order approximation to estimate the additive and time jitter noises, and prese ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30093



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