Characterisation and optimisation of the new Prompt Gamma-ray Activation Analysis (PGAA) facility at FRM II

2011 ◽  
Vol 636 (1) ◽  
pp. 108-113 ◽  
Author(s):  
Lea Canella ◽  
Petra Kudějová ◽  
Ralf Schulze ◽  
Andreas Türler ◽  
Jan Jolie
Keyword(s):  
Activation Analysis ◽  
Gamma Ray ◽  
Prompt Gamma

Characterization of Materials for a Hydrogen-Based Economy by Cold Neutron Prompt Gamma-Ray Activation Analysis

2008 ◽  
Vol 1098 ◽  
Author(s):  
Rick Paul ◽  
Lei Raymond Cao
Keyword(s):  
Activation Analysis ◽  
Hydrogen Storage ◽  
Gamma Ray ◽  
Cold Neutron ◽  
Proton Conductors ◽  
Prompt Gamma ◽  
Hydrogen Storage Materials ◽  
Storage Materials ◽  
Characterization Of Materials

AbstractAn instrument for cold neutron prompt gamma-ray activation analysis (PGAA) at the NIST Center for Neutron Research (NCNR) has proven useful for the chemical characterization of hydrogen storage materials and other materials of importance to a hydrogen-based economy. The detection limit for hydrogen is less than 10 mg/kg for most materials. Potential hydrogen storage materials that have been characterized by PGAA include single-wall carbon nanotubes with and without boron doping, porous carbons, lithium magnesium imides, and ternary hydrides of various elements. The capability to allow in situ hydrogenation and characterization of materials is currently under development. PGAA has also been used to characterize materials used in hydrogen fuel cells, including solid proton conductors, polymer membrane, and proton exchange membranes. Future upgrades to the instrument will improve detection limits and functionality of the instrument.

Effects of target shape and neutron scattering on element sensitivities for neutron-capture prompt .gamma.-ray activation analysis

1991 ◽  
Vol 63 (3) ◽  
pp. 288-292 ◽  
Author(s):  
Elizabeth A. Mackey ◽  
Glen E. Gordon ◽  
Richard M. Lindstrom ◽  
David L. Anderson
Keyword(s):  
Activation Analysis ◽  
Neutron Scattering ◽  
Neutron Capture ◽  
Gamma Ray ◽  
Prompt Gamma ◽  
Target Shape

Determination of Hydrogen in Metals, Semiconductors, and Other Materials by Cold Neutron Prompt Gamma-Ray Activation Analysis

1998 ◽  
Vol 513 ◽  
Author(s):  
R. L. Paul ◽  
R. M. Lindstrom
Keyword(s):  
Activation Analysis ◽  
Titanium Alloys ◽  
Gamma Ray ◽  
Cold Neutron ◽  
Detection Limits ◽  
Prompt Gamma ◽  
Nondestructive Measurement ◽  
Hydrogen In Metals

ABSTRACTCold neutron prompt gamma-ray activation analysis has proven useful for nondestructive measurement of trace hydrogen. The sample is irradiated in a beam of neutrons; the presence of hydrogen is confirmed by the emission of a 2223 keV gamma-ray. Detection limits for hydrogen are 3 mg/kg in quartz and 8 mg/kg in titanium. We have used the technique to measure hydrogen in titanium alloys, germanium, quartz, fullerenes and their derivatives, and other materials.

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