DK122589A - METHOD AND APPARATUS FOR ANALYZING BY NEUTRON ACTIVATION OF A CURRENT OF MASS GOODS - Google Patents
METHOD AND APPARATUS FOR ANALYZING BY NEUTRON ACTIVATION OF A CURRENT OF MASS GOODSInfo
- Publication number
- DK122589A DK122589A DK122589A DK122589A DK122589A DK 122589 A DK122589 A DK 122589A DK 122589 A DK122589 A DK 122589A DK 122589 A DK122589 A DK 122589A DK 122589 A DK122589 A DK 122589A
- Authority
- DK
- Denmark
- Prior art keywords
- neutron
- radiation
- measurement
- elements
- gamma radiation
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/221—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis
- G01N23/222—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis using neutron activation analysis [NAA]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/07—Investigating materials by wave or particle radiation secondary emission
- G01N2223/074—Investigating materials by wave or particle radiation secondary emission activation analysis
- G01N2223/0745—Investigating materials by wave or particle radiation secondary emission activation analysis neutron-gamma activation analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/30—Accessories, mechanical or electrical features
- G01N2223/303—Accessories, mechanical or electrical features calibrating, standardising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/30—Accessories, mechanical or electrical features
- G01N2223/322—Accessories, mechanical or electrical features immerged detecting head
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/30—Accessories, mechanical or electrical features
- G01N2223/345—Accessories, mechanical or electrical features mathematical transformations on beams or signals, e.g. Fourier
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/635—Specific applications or type of materials fluids, granulates
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Measurement Of Radiation (AREA)
Abstract
Analysis of the content of certain elements in a continuous flow of bulk materials by neutron bombardment and measurement of the gamma radiation emitted by these elements, which makes it possible to distinguish between the capture radiation and the activation radiation. The neutron source is a neutron-generating tube (7) which is activated periodically. The signals from a single gamma radiation detector (10) are considered only after neutron emission has ceased, during distinct intervals corresponding respectively to the phenomena of capture and radiation of the activated elements. The respective signals are treated in two distinct measurement routes and the results are then combined automatically. A third measurement route can be provided for gamma radiation resulting from inelastic shocks. The source (7) and the detector (10) are grouped in a probe (6) lodged in a polyethylene protective tube (5) inside the flow of the materials (1). The installation is used to analyse large flows of minerals without taking samples, in particular in the mining, coal mining, cement, and aluminium industries.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8710184A FR2618225B1 (en) | 1987-07-15 | 1987-07-15 | METHOD AND INSTALLATION FOR NEUTRONIC BOMBARD ANALYSIS OF A BULK MATERIAL FLOW. |
PCT/EP1988/000639 WO1989000685A1 (en) | 1987-07-15 | 1988-07-14 | Process and installation for analysing a flow of bulk materials by neutron bombardment |
Publications (2)
Publication Number | Publication Date |
---|---|
DK122589D0 DK122589D0 (en) | 1989-03-14 |
DK122589A true DK122589A (en) | 1989-03-14 |
Family
ID=9353290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK122589A DK122589A (en) | 1987-07-15 | 1989-03-14 | METHOD AND APPARATUS FOR ANALYZING BY NEUTRON ACTIVATION OF A CURRENT OF MASS GOODS |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0325645B1 (en) |
JP (1) | JPH02501331A (en) |
AT (1) | ATE68597T1 (en) |
AU (1) | AU606450B2 (en) |
BR (1) | BR8807128A (en) |
CA (1) | CA1311567C (en) |
DE (1) | DE3865662D1 (en) |
DK (1) | DK122589A (en) |
FR (1) | FR2618225B1 (en) |
GR (1) | GR1000142B (en) |
PT (1) | PT87973B (en) |
WO (1) | WO1989000685A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5289973A (en) * | 1989-03-01 | 1994-03-01 | French Andrew B | Snowmaking method and device |
US5076993A (en) * | 1990-01-12 | 1991-12-31 | Science Applications International Corporation | Contraband detection system using direct imaging pulsed fast neutrons |
FR2665260A1 (en) * | 1990-07-25 | 1992-01-31 | France Etat Ponts Chaussees | APPARATUS FOR MEASURING BY PULSED NEUTRONIC IRRADIATION OF THE CONTENT OF ITS VARIOUS CONSTITUENTS OF A BULK MATERIAL AND DETERMINATION METHOD USING THE SAME. |
CN112326708B (en) * | 2020-10-20 | 2023-10-24 | 汪金龙 | Human tissue density and element composition reconstruction algorithm based on instantaneous gamma spectrum |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6703114A (en) * | 1966-03-15 | 1967-09-18 | ||
AT295893B (en) * | 1968-05-27 | 1972-01-25 | Oesterr Studien Atomenergie | Process for determining the composition of all kinds of materials or for monitoring technical-chemical or biological processes |
US4409481A (en) * | 1980-08-28 | 1983-10-11 | Halliburton Company | Method for simultaneous measurement of thermal neutron decay components |
GB2101304B (en) * | 1981-06-10 | 1985-06-12 | Atomic Energy Authority Uk | Gold ore sorting |
US4582992A (en) * | 1984-08-10 | 1986-04-15 | Gamma-Metrics | Self-contained, on-line, real-time bulk material analyzer |
-
1987
- 1987-07-15 FR FR8710184A patent/FR2618225B1/en not_active Expired - Lifetime
-
1988
- 1988-07-13 GR GR880100468A patent/GR1000142B/en unknown
- 1988-07-13 PT PT87973A patent/PT87973B/en not_active IP Right Cessation
- 1988-07-14 BR BR888807128A patent/BR8807128A/en not_active Application Discontinuation
- 1988-07-14 CA CA000572068A patent/CA1311567C/en not_active Expired - Lifetime
- 1988-07-14 JP JP63506555A patent/JPH02501331A/en active Pending
- 1988-07-14 DE DE8888907074T patent/DE3865662D1/en not_active Expired - Lifetime
- 1988-07-14 AT AT88907074T patent/ATE68597T1/en not_active IP Right Cessation
- 1988-07-14 WO PCT/EP1988/000639 patent/WO1989000685A1/en active IP Right Grant
- 1988-07-14 AU AU21391/88A patent/AU606450B2/en not_active Ceased
- 1988-07-14 EP EP88907074A patent/EP0325645B1/en not_active Expired - Lifetime
-
1989
- 1989-03-14 DK DK122589A patent/DK122589A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
ATE68597T1 (en) | 1991-11-15 |
AU2139188A (en) | 1989-02-13 |
FR2618225B1 (en) | 1990-03-02 |
WO1989000685A1 (en) | 1989-01-26 |
CA1311567C (en) | 1992-12-15 |
GR1000142B (en) | 1991-09-27 |
GR880100468A (en) | 1989-04-12 |
EP0325645A1 (en) | 1989-08-02 |
DK122589D0 (en) | 1989-03-14 |
PT87973B (en) | 1993-09-30 |
BR8807128A (en) | 1989-10-31 |
FR2618225A1 (en) | 1989-01-20 |
AU606450B2 (en) | 1991-02-07 |
DE3865662D1 (en) | 1991-11-21 |
EP0325645B1 (en) | 1991-10-16 |
PT87973A (en) | 1989-06-30 |
JPH02501331A (en) | 1990-05-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AHS | Application shelved for other reasons than non-payment |