Walid A. Metwally

Works (11)

Updated: July 5th, 2023 16:01

2007 journal article

CEARCPG: A Monte Carlo simulation code for normal and coincidence prompt-gamma-ray neutron activation analysis

Nuclear Science and Engineering, 155(1), 143–153.

By: X. Han n, R. Gardner n & W. Metwally n

Source: NC State University Libraries
Added: August 6, 2018

2007 article

Using gamma-gamma coincidence measurements to validate Monte Carlo generated detector response functions

Metwally, W. A., Gardner, R. P., & Sood, A. (2007, October). NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Vol. 263, pp. 50–53.

By: W. Metwally*, R. Gardner n & A. Sood*

author keywords: PGNAA; gamma-gamma coincidence; detector response functions (DRF's)
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Source: Web Of Science
Added: August 6, 2018

2005 journal article

A new NaI detector arrangement for efficient detection of high energy gamma-rays

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 264(1), 133–137.

By: R. Gardner n, W. Metwally* & X. Han  n

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Source: Web Of Science
Added: August 6, 2018

2005 journal article

Coincidence counting for PGNAA applications: Is it the optimum method?

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 265(2), 309–314.

By: W. Metwally n, C. Mayo n, X. Han n & R. Gardner n

Source: Web Of Science
Added: August 6, 2018

2005 journal article

Status of software for PGNAA bulk analysis by the Monte Carlo - Library Least-Squares (MCLLS) approach

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 264(1), 221–228.

By: R. Gardner n, W. Zhang n & W. Metwally*

TL;DR: The Center for Engineering Applications of Radioisotopes (CEAR) has finished the development of Monte Carlo simulation for all of the libraries except the prompt gamma-ray library from the activation of the NaI detector. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Stabilization of prompt gamma-ray neutron activation analysis (PGNAA) spectra from NaI detectors

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 525(3), 518–521.

By: W. Metwally n & R. Gardner n

author keywords: spectral drift; spectrum stabilization; temperature and counting rate drifts; NaI non-linearity
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Source: Web Of Science
Added: August 6, 2018

2004 journal article

Two-dimensional diagonal summing of coincidence spectra for bulk PGNAA applications

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 525(3), 511–517.

By: W. Metwally n, R. Gardner n & C. Mayo n

author keywords: two-dimensional diagonal summing; gamma-gamma coincidence; PGNAA
Source: Web Of Science
Added: August 6, 2018

2003 article

A semi-empirical model for a Sr-90 beta-particle transmission thickness gauge for aluminum alloys

Gardner, R. P., Metwally, W. A., & Shehata, A. (2004, January). NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Vol. 213, pp. 357–363.

By: R. Gardner n, W. Metwally n & A. Shehata n

Source: Web Of Science
Added: August 6, 2018

2003 article

Elemental PGNAA analysis using gamma-gamma coincidence counting with the library least-squares approach

Metwally, W. A., Gardner, R. P., & Mayo, C. W. (2004, January). NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Vol. 213, pp. 394–399.

By: W. Metwally n, R. Gardner n & C. Mayo n

author keywords: PGNAA; gamma-gamma coincidence
Source: Web Of Science
Added: August 6, 2018

2003 article

Preliminary studies on K and L coincidence spectroscopy for optimizing the in vivo XRF measurement of lead in bone

Guo, W. J., Gardner, R. P., & Metwally, W. A. (2004, January). NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Vol. 213, pp. 574–578.

By: W. Guo n, R. Gardner n & W. Metwally n

author keywords: XRF; K and L X-ray coincidence; in vivo lead in bone measurement; MCLLS; differential operator
TL;DR: An approach for combining the MCLLS approach with the differential operator approach (MCDOLLS) is presented and an optimal configuration for coincidence spectroscopy of K and L X-rays is proposed based on preliminary experimental data. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2000 article

A feasibility study of a coincidence counting approach for PGNAA applications

APPLIED RADIATION AND ISOTOPES, Vol. 53, pp. 515–526.

By: R. Gardner n, C. Mayo n, E. El-Sayyed n, W. Metwally n, Y. Zheng  n & M. Poezart n

author keywords: PGNAA coincidence
TL;DR: Initial efforts to use coincidence counting in PGNAA to significantly reduce the several sources of background and thereby increase the S/N ratio are reported on. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

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