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Reduction of the duration of the natural dead time of a 4 {pi} gas ionization counter operating in geiger-muller; Reduction de la duree de l'etat d'insensibilite naturelle d'un compteur a ionisation gazeuse de geometrie 4 {pi} travaillant en regime de Geiger-Muller

Abstract

It Is only possible to benefit from the 100 per cent efficiency of a 4 {pi} gas-ionisation detector operating in the Geiger-Muller regime (an efficiency which always appears difficult to attain in other detectors) if, one is able: - on the one hand to reduce considerably - on the other hand to fix very precisely the length at the real dead time of the system operating in the above conditions. Taking into account both the phenomena characteristic of the discharge in the regime under consideration, phenomena whose properties are described, and the geometrical conditions depending on the operation over a solid angle of 4 {pi}, it is shown that with an exterior electronic system for cutting off the discharge for example in 30 nanoseconds, absolute 4 {pi} G.M. measurements would become competitive with those now carried out almost in proportional conditions. Measurement results on sources of 5 x 10{sup 3} emissions per second maximum obtained by the use of a system for which the interval between the passage of a particle and the moment when the device has been made insensitive is still 60 nanoseconds have made it possible to confirm these statements. (author) [French] De l'efficacite de 100 pour  More>>
Authors:
Becker, A [1] 
  1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires, Departement d'Electronique Generale, Laboratoire de Mesure des Radioelements
Publication Date:
Jul 01, 1967
Product Type:
Technical Report
Report Number:
CEA-R-3189
Resource Relation:
Other Information: 56 refs; PBD: Jul 1967
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CORRECTIONS; DEAD TIME; ELECTRIC POTENTIAL; EXCITED STATES; GEIGER-MUELLER COUNTERS; IONIZATION CHAMBERS; LOSSES; PHOTONS; PULSE TECHNIQUES; SIGNAL CONDITIONING; TIME RESOLUTION; TOWNSEND DISCHARGE
OSTI ID:
20626237
Research Organizations:
Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR05R3189069350
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
60 pages
Announcement Date:

Citation Formats

Becker, A. Reduction of the duration of the natural dead time of a 4 {pi} gas ionization counter operating in geiger-muller; Reduction de la duree de l'etat d'insensibilite naturelle d'un compteur a ionisation gazeuse de geometrie 4 {pi} travaillant en regime de Geiger-Muller. France: N. p., 1967. Web.
Becker, A. Reduction of the duration of the natural dead time of a 4 {pi} gas ionization counter operating in geiger-muller; Reduction de la duree de l'etat d'insensibilite naturelle d'un compteur a ionisation gazeuse de geometrie 4 {pi} travaillant en regime de Geiger-Muller. France.
Becker, A. 1967. "Reduction of the duration of the natural dead time of a 4 {pi} gas ionization counter operating in geiger-muller; Reduction de la duree de l'etat d'insensibilite naturelle d'un compteur a ionisation gazeuse de geometrie 4 {pi} travaillant en regime de Geiger-Muller." France.
@misc{etde_20626237,
title = {Reduction of the duration of the natural dead time of a 4 {pi} gas ionization counter operating in geiger-muller; Reduction de la duree de l'etat d'insensibilite naturelle d'un compteur a ionisation gazeuse de geometrie 4 {pi} travaillant en regime de Geiger-Muller}
author = {Becker, A}
abstractNote = {It Is only possible to benefit from the 100 per cent efficiency of a 4 {pi} gas-ionisation detector operating in the Geiger-Muller regime (an efficiency which always appears difficult to attain in other detectors) if, one is able: - on the one hand to reduce considerably - on the other hand to fix very precisely the length at the real dead time of the system operating in the above conditions. Taking into account both the phenomena characteristic of the discharge in the regime under consideration, phenomena whose properties are described, and the geometrical conditions depending on the operation over a solid angle of 4 {pi}, it is shown that with an exterior electronic system for cutting off the discharge for example in 30 nanoseconds, absolute 4 {pi} G.M. measurements would become competitive with those now carried out almost in proportional conditions. Measurement results on sources of 5 x 10{sup 3} emissions per second maximum obtained by the use of a system for which the interval between the passage of a particle and the moment when the device has been made insensitive is still 60 nanoseconds have made it possible to confirm these statements. (author) [French] De l'efficacite de 100 pour cent du detecteur a ionisation gazeuse travaillant en regime de Geiger-Muller en geometrie 4 {pi} (efficacite toujours difficile a atteindre par d'autres detecteurs semble-t-il) on ne peut cependant beneficier que si l'on est capable: - d'une part, de reduire considerablement - d'autre part, de fixer de maniere tres precise la duree d'insensibilite reelle du systeme travaillant dans les conditions ci-dessus. Tenant compte des phenomenes propres a la decharge, dans le regime en question, phenomenes dont on rappeUto quelques caracteristiques, et des conditions geometriques propres a une detection dans un angle solide de 4 {pi} on montre qu'avec un systeme electronique de coupure externe de la decharge qui arreterait cette derniere en 30 nanosecondes par exemple, des mesures absolues en 4 {pi} faites au G. M. redeviendraient concurrentielles avec celles que l'on fait actuellement presque exclusivement en regime proportionnel. Des resultats de mesure sur des sources de 5.10{sup 3} emissions par seconde au plus obtenues en utilisant un systeme pour lequel la duree entre l'instant du passage d'une particule, et celui ou le dispositif aura ete rendu insensible est encore de 60 nanosecondes, confirment ce qui precede. (auteur)}
place = {France}
year = {1967}
month = {Jul}
}