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1. WO2011035379 - NEUTRON ACTIVATION GEOMETRY AND CALIBRATION FOR FLOWING CARRIER STREAMS

Publication Number WO/2011/035379
Publication Date 31.03.2011
International Application No. PCT/AU2010/001248
International Filing Date 24.09.2010
IPC
G21G 1/06 2006.01
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
GCONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
1Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation, or particle bombardment, e.g. producing radioactive isotopes
04outside of nuclear reactors or particle accelerators
06by neutron irradiation
G01N 23/221 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/-G01N17/178
22by measuring secondary emission from the material
221by activation analysis
G01N 23/222 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/-G01N17/178
22by measuring secondary emission from the material
221by activation analysis
222using neutron activation analysis
CPC
G01N 23/222
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00G01N17/00, G01N21/00 or G01N22/00
22by measuring secondary emission from the material
221by activation analysis
222using neutron activation analysis [NAA]
G21G 1/06
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
GCONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
1Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes
04outside nuclear reactors or particle accelerators
06by neutron irradiation
Applicants
  • MURRAY, Andrew Gerard William [AU]/[AU]
  • BARTEL, Anthony Gordon [AU]/[AU]
Inventors
  • MURRAY, Andrew Gerard William
  • BARTEL, Anthony Gordon
Agents
  • SMOORENBURG PlNI PATENT & TRADE MARK ATTORNEYS
Priority Data
200990465425.09.2009AU
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) NEUTRON ACTIVATION GEOMETRY AND CALIBRATION FOR FLOWING CARRIER STREAMS
(FR) GÉOMÉTRIE D'ACTIVATION DE NEUTRONS ET ÉTALONNAGE D'ÉCOULEMENTS DE PORTEURS FLUIDES
Abstract
(EN)
A nuclear activation apparatus comprises modules including: means (11, 15) for introducing fluid samples to a sample conduit; an activation thimble (20) comprising a section of sample conduit configured for multiple passes adjacent a radiation source, for extending irradiation time; an absorber (30) adjacent to the activation thimble; and a detector (27) adjacent the sample conduit. The relative arrangement of the modules can be altered specific to an application. The rate of flow of the fluid sample adjacent the radiation source can be controlled via a pump (10). The pump may be calibrated via timing a coloured sample flowing between gradations marked on the sample conduit. Background contributions may be calculated via pumping discrete portions of air and carrier fluid (eg, water) to and beyond the activation thimble (20), and counting decay events.
(FR)
L'invention concerne un appareil d'activation nucléaire qui comprend des modules incluant des moyens (11, 15) d'introduction d'échantillons de fluide dans un conduit d'échantillon, une douille d'activation (20) qui présente une section de conduit d'échantillon configurée pour permettre plusieurs passages en position adjacente à une source de rayonnement pour prolonger la durée d'irradiation, un absorbeur (30) adjacent à la douille d'activation et un détecteur (27) adjacent au conduit d'échantillon. L'agencement relatif des modules peut être modifié en fonction de l'application particulière. Le débit d'écoulement de l'échantillon de fluide en position adjacente à la source de rayonnement peut être régulé par l'intermédiaire d'une pompe (10). La pompe peut être étalonnée par le cadençage de l'écoulement d'un échantillon coloré entre des graduations apposées sur le conduit d'échantillon. Les contributions de l'environnement peuvent être calculées en pompant des parties distinctes d'air et de fluide porteur (par exemple de l'eau) vers et au-delà de la douille d'activation (20) et en comptant les événements de décomposition.
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