Title:
MULTIGRID HIGH PRESSURE GASEOUS PROPORTIONAL SCINTILLATION COUNTER FOR DETECTING IONIZING RADIATION
Document Type and Number:
WIPO Patent Application WO/2010/095967
Kind Code:
A1
Abstract:
The present invention relates to a multigrid high-pressure gaseous proportional scintillation counter for detecting ionizing radiation such as X-rays, gamma rays, electrons or other charged leptons, alpha particles or other charged particles, and for giving information about the energy dissipated in the gas and the detection time, using an electronic pulse with an amplitude approximately proportional to that energy. It is essentially characterized by virtue of: external metallic walls (1) at ground potential; a pure and/or continuously purified noble gas, or a noble gas in a mixture under a filling pressure ranging from 1-100 atmospheres; a reflective CsI photocathode; four metallic grids: G1 (2), G2 (3), G3 (4) and G4 (5) with a thin mesh and high optical transmission, not lower than 80%, forming five regions delimited by these grids (2, 3, 4, 5), wherein the voltage applied to the grids through the feedthroughs (9) produces electric fields which do not vary over time in the various zones of the detector.
Inventors:
NABAIS CONDE, Carlos Alberto (Rua Dr. António José de Almeida, 226 R/C Dto, Coimbra, P-3000, PT)
GOUVEIA DE MELO BORGES BELO SOARES, Filipa Isabel (Rua Eng. Jorge Anjinho, Lote, 6 Dto -482 Coimbra, P-3030, PT)
COELHO DO CARMO, Sergio José (Rua do Requeixo, Casal dos Ferreiro, -588 Soure, P-3130, PT)
RAIMUNDO MARIQUITO, João Carlos (Avenida do Paiol, n°538 2° Dto, -102 Abrantes, P-2200, PT)
DA FONSECA TRINDADE, Alexandre Manuel (Rua Paulo Quintela N°187, 3°G, -363 Coimbra, P-3030, PT)
GOUVEIA DE MELO BORGES BELO SOARES, Filipa Isabel (Rua Eng. Jorge Anjinho, Lote, 6 Dto -482 Coimbra, P-3030, PT)
COELHO DO CARMO, Sergio José (Rua do Requeixo, Casal dos Ferreiro, -588 Soure, P-3130, PT)
RAIMUNDO MARIQUITO, João Carlos (Avenida do Paiol, n°538 2° Dto, -102 Abrantes, P-2200, PT)
DA FONSECA TRINDADE, Alexandre Manuel (Rua Paulo Quintela N°187, 3°G, -363 Coimbra, P-3030, PT)
Application Number:
PT2010/000007
Publication Date:
August 26, 2010
Filing Date:
February 22, 2010
Export Citation:
Assignee:
UNIVERSIDADE DE COIMBRA (Reitoria da Universidade de Coimbra, Paço das Escolas, -531 Coimbra, P-3004, PT)
NABAIS CONDE, Carlos Alberto (Rua Dr. António José de Almeida, 226 R/C Dto, Coimbra, P-3000, PT)
GOUVEIA DE MELO BORGES BELO SOARES, Filipa Isabel (Rua Eng. Jorge Anjinho, Lote, 6 Dto -482 Coimbra, P-3030, PT)
COELHO DO CARMO, Sergio José (Rua do Requeixo, Casal dos Ferreiro, -588 Soure, P-3130, PT)
RAIMUNDO MARIQUITO, João Carlos (Avenida do Paiol, n°538 2° Dto, -102 Abrantes, P-2200, PT)
DA FONSECA TRINDADE, Alexandre Manuel (Rua Paulo Quintela N°187, 3°G, -363 Coimbra, P-3030, PT)
NABAIS CONDE, Carlos Alberto (Rua Dr. António José de Almeida, 226 R/C Dto, Coimbra, P-3000, PT)
GOUVEIA DE MELO BORGES BELO SOARES, Filipa Isabel (Rua Eng. Jorge Anjinho, Lote, 6 Dto -482 Coimbra, P-3030, PT)
COELHO DO CARMO, Sergio José (Rua do Requeixo, Casal dos Ferreiro, -588 Soure, P-3130, PT)
RAIMUNDO MARIQUITO, João Carlos (Avenida do Paiol, n°538 2° Dto, -102 Abrantes, P-2200, PT)
DA FONSECA TRINDADE, Alexandre Manuel (Rua Paulo Quintela N°187, 3°G, -363 Coimbra, P-3030, PT)
International Classes:
H01J47/06; G01T1/20
Attorney, Agent or Firm:
PEREIRA DA CRUZ, João (J. Pereira da Cruz, S.A.Rua Victor Cordo, 14 -103 Lisboa, P-1249, PT)
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