EP 0877953 A1 19981118 - METHOD AND APPARATUS FOR DETECTING AND IDENTIFYING FISSIONABLE MATERIAL
Title (en)
METHOD AND APPARATUS FOR DETECTING AND IDENTIFYING FISSIONABLE MATERIAL
Title (de)
VERFAHREN UND VORRICHTUNG ZUR ERFASSUNG UND IDENTIFIZIERUNG EINES SPALTBARENS MATERIAL
Title (fr)
PROCEDE ET APPAREIL POUR DETECTER ET IDENTIFIER DES MATIERES FISSIBLES
Publication
Application
Priority
- FI 954381 A 19950918
- FI 9600480 W 19960911
Abstract (en)
[origin: WO9711388A1] The invention relates to a method and apparatus for detecting and identifying fissionable materials from among other transported goods, in which method the material (4) under inspection is irradiated with bremmstrahlung (2) generated by a linear particle accelerator (1). According to the invention, a delayed neutrons flux emitted from the material (4) under inspection by means of bremmstrahlung (2) is detected with at least one neutron detector (7) after interrupting the bremmstrahlung (2), and if essential changes occur in the neutron flux, the position of the material (4) in relation to the detector is determined. After inspecting the whole bulk of goods, the material (4) is returned to the position determined according to the change in the neutron flux in relation to the detector (7), and in this determined position the material (4) is again irradiated with bremmstrahlung (2) in order to identify the material generating the neutron flux, and at least one neutron detector (7) is used for detecting the delayed neutrons emitted from the fissionable material, in order to identify the fissionable material (6) in question.
IPC 1-7
IPC 8 full level
G01T 1/167 (2006.01); G01T 3/00 (2006.01); G01V 5/00 (2006.01)
CPC (source: EP)
G01T 3/00 (2013.01); G01V 5/234 (2024.01); G01V 5/281 (2024.01)
Citation (search report)
See references of WO 9711388A1
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
WO 9711388 A1 19970327; CA 2232039 A1 19970327; CN 1196797 A 19981021; EP 0877953 A1 19981118; FI 954381 A0 19950918; FI 954381 A 19970319; IL 123633 A0 19981030; JP H11512528 A 19991026; TR 199800440 T1 19980622
DOCDB simple family (application)
FI 9600480 W 19960911; CA 2232039 A 19960911; CN 96197052 A 19960911; EP 96930183 A 19960911; FI 954381 A 19950918; IL 12363396 A 19960911; JP 51241296 A 19960911; TR 9800440 T 19960911