Determination of boron concentration in blood and tissue samples from patients with liver metastases of colorectal carcinoma using Prompt Gamma Ray Activation Analysis (PGAA)

2011 ◽  
Vol 69 (7) ◽  
pp. 936-941 ◽  
Author(s):  
T. Schmitz ◽  
K. Appelman ◽  
P. Kudejova ◽  
C. Schütz ◽  
J.V. Kratz ◽  
...  
Keyword(s):  
Activation Analysis ◽  
Colorectal Carcinoma ◽  
Liver Metastases ◽  
Boron Concentration ◽  
Gamma Ray ◽  
Prompt Gamma ◽  
Tissue Samples

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.

Determination of Hydrogen in Semiconductors and Related Materials by Cold Neutron Prompt Gamma-ray Activation Analysis

2004 ◽  
Vol 813 ◽  
Author(s):  
Rick L. Paul
Keyword(s):  
Activation Analysis ◽  
Gamma Rays ◽  
Gamma Ray ◽  
Prompt Gamma ◽  
Porous Thin Films ◽  
Atomic Nuclei ◽  
High Purity Germanium ◽  
Mass Fractions ◽  
Hydrogen Mass

ABSTRACTAn instrument for prompt gamma-ray activation analysis (PGAA) at the NIST Center for Neutron Research has proven useful for the measurement of hydrogen and other elements in a variety of materials. The sample is irradiated by a beam of low energy neutrons. Gamma-rays emitted by atomic nuclei upon neutron capture are measured and elemental concentrations determined by comparison with appropriate standards. The detection limit for hydrogen is < 5 mg/kg in most materials, and 2 mg/kg for hydrogen measured in silicon. The instrument has been used to measure hydrogen mass fractions of < 100 mg/kg in high purity germanium, and < 10 mg/kg in quartz. More recently PGAA has been used to measure hydrogen in 1 μm thick porous thin films on a silicon substrate, and in crystals of silicon carbide and cerium aluminate.

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