TRACK-STRUCTURE DETECTORS FOR NEUTRON AND ALPHA DOSIMETRY

Informations projet

N° de convention de subvention: BI6*0023

Projet clôturé

Date de début 1 Janvier 1985

Date de fin 31 Decembre 1989

Financé au titre de

• Multiannual research and training programme (Euratom) in the field of radiation protection, 1985-1989

Coût total Aucune donnée

Contribution de l’UE Aucune donnée

Coordonné par

Comitato Nazionale per la Ricerca e per lo Sviluppo dell'Energia Nucleare e delle Energie Alternative
Italie

Objectif

THE MAJOR SCOPE OF THIS RESEARCH PROPOSAL IS THE DEVELOPMENT OF THOSE DETECTING METHODS WHICH REGISTER FAST NEUTRONS AND HIGH-LET PARTICLES WITH VERY LARGE SENSITIVITY AND ARE COMPLETELY INSENSITIVE TO SPARSE RADIATION. THESE NEW DETECTORS ARE BASED ON THE SAME PROPERTIES OF HIGHLY IONIZING PARTICLES WHICH DETERMINE THEIR HIGH BIOLOGICAL EFFECTIVENESS, NAMELY THE HIGH-ENERGY DEPOSITION AT MICROSCOPIC AND SUBMICROSCOPIC DISTANCES FROM THE PARTICLE TRAJECTORY IN DIFFERENT MATERIALS SUCH AS INSULATORS AND SEMICONDUCTORS. BECAUSE OF THESE REGISTRATION CHARACTERISTICS, THEY ARE REFERRED TO AS NUCLEAR-TRACK STRUCTURE DETECTORS. ANOTHER IMPORTANT CHARACTERISTIC, IS TO USE THE HIGH-ENERGY DEPOSITION IN THE VICINITY OF THE TRACK TO INITIATE AMPLIFICATION OR AVALANCHE-TYPES OF PROCESSES WHICH CAN BE EASILY DETECTED.
THESE DETECTORS CAN BE DIVIDED INTO TWO CATEGORIES:
A. DAMAGE TRACK REGISTRATION BY CHEMICAL AND ELECTROCHEMICAL ETCHING
B. HEAVY ION COUNTERS BY THE INDUCTION OF CHARGES, CURRENT PULSES AND BREAKDOWNS IN BASIC ELEMENTS OF MICROELECTRONICS SUCH AS MOS, CCD, RAM ETC.
The solutions to many problems in neutron dosimetry (for personnel, area and environmental monitoring) may be achieved through the optimisation of the electrochemical etching parameters such as electric fields, temperature and frequency. The major scope of this work is to demonstrate how it is possible to obtain any desired neutron dosimeter response through a proper choice of the parameters of the electrochemical etching of CR-39 detectors.

Studies conducted are as follows:
neutron dosimetry by damage track detector: advantages and limitations;
applied personal dosimetry by chemical etched CR-39 dosimeters;
the assessment of low concentrations of alpha emitting radionuclides.
1. NEUTRON DOSIMETRY BY DAMAGE TRACK DETECTOR: ADVANTAGES AND LIMITATIONS.
2. APPLIED PERSONAL DOSIMETRY BY CHEMICAL ETCHED CR-39 DOSIMETERS.
3. THE ASSESSMENT OF LOW CONCENTRATION OF ALPHA EMITTING RADIONUCLIDES.

Champ scientifique (EuroSciVoc)

CORDIS classe les projets avec EuroSciVoc, une taxonomie multilingue des domaines scientifiques, grâce à un processus semi-automatique basé sur des techniques TLN. Voir: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.

• ingénierie et technologie › génie électrique, génie électronique, génie de l’information › ingénierie électronique › capteurs › capteurs optiques
• sciences naturelles › sciences physiques › électromagnétisme et électronique › dispositif à semiconducteur
• sciences naturelles › sciences physiques › électromagnétisme et électronique › microélectronique
• sciences naturelles › sciences chimiques › chimie nucléaire › chimie du rayonnement

Vous devez vous identifier ou vous inscrire pour utiliser cette fonction

Programme(s)

• FP1-RADPROT 6C - Multiannual research and training programme (Euratom) in the field of radiation protection, 1985-1989

Thème(s)

Données non disponibles

Appel à propositions

Données non disponibles

Régime de financement

CSC -

Coordinateur

Comitato Nazionale per la Ricerca e per lo Sviluppo dell'Energia Nucleare e delle Energie Alternative

• Contribution de l’UE: Aucune donnée
• Adresse: Viale Regina Margherita 125 ; 00198 Roma ; Italie
• Coût total: Aucune donnée