You need JavaScript to view this

Focusing of a new germanium counter type : the composite detector. Uses of the TREFLE detector in the EUROGAM multidetector; Mise au point d`un nouveau type de compteur germanium: le detecteur composite. Utilisation du detecteur TREFLE dans le multidetecteur EUROGAM

Abstract

The aim of this thesis is the development of new types of germanium detectors: the composite detectors. Two types of prototypes are then conceived: the stacked planar detector (EDP) and the assembly of coaxial diodes (TREFLE). They are designed for the multidetector EUROGAM destined to the research of nuclear structure at high angular momentum. The four planar diodes of EDP detector were of 7 cm diameter and of 15 to 20 mm thick. The difference between the calculated and measured photopic efficiency is observed. The importance of surface channel induces a weak resistance of neutron damages. The sputtering method for the surface treatment reducing the germanium dead layer as well as a rule of selection concerning the impurity concentration and the thickness of crystal is helpful for the later production of germanium detector. The CLOVER detector consist of for mean size crystals in the same cryostat. The photopic efficiency is much larger than that of the greatest monocrystal detector. And the granulation of composite detector allowed the Doppler broadening correction of gamma ray observed in the nuclear reaction where the recoil velocity is very high. This new type of detector enable the linear polarization measurement of gamma ray. Twenty-four CLOVER  More>>
Authors:
Publication Date:
May 01, 1995
Product Type:
Thesis/Dissertation
Report Number:
CRN-95-24
Reference Number:
SCA: 440104; 440101; PA: AIX-27:048340; EDB-96:100684; NTS-96:018666; NTS-96:018996; SN: 96001611864
Resource Relation:
Other Information: TH: These (D. es Sc.).; PBD: May 1995
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; GE SEMICONDUCTOR DETECTORS; USES; NUCLEAR STRUCTURE; ANGULAR MOMENTUM; COMPTON EFFECT; COMPUTERIZED SIMULATION; DATA ACQUISITION SYSTEMS; DE-EXCITATION; ENERGY RESOLUTION; G CODES; GAMMA DETECTION; GAMMA RADIATION; GAMMA SPECTROSCOPY; MEASURING METHODS; MONTE CARLO METHOD; NUCLEAR MATTER; PHOSPHORS; SCINTILLATION COUNTERS; SEMICONDUCTOR DIODES; SENSITIVITY; SIGNAL-TO-NOISE RATIO; TIME RESOLUTION
OSTI ID:
246812
Research Organizations:
Strasbourg-1 Univ., 67 (France). Centre de Recherches Nucleaires
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: DE96627452; TRN: FR9600943048340
Availability:
INIS; OSTI as DE96627452
Submitting Site:
FRN
Size:
124 p.
Announcement Date:

Citation Formats

Han, L. Focusing of a new germanium counter type : the composite detector. Uses of the TREFLE detector in the EUROGAM multidetector; Mise au point d`un nouveau type de compteur germanium: le detecteur composite. Utilisation du detecteur TREFLE dans le multidetecteur EUROGAM. France: N. p., 1995. Web.
Han, L. Focusing of a new germanium counter type : the composite detector. Uses of the TREFLE detector in the EUROGAM multidetector; Mise au point d`un nouveau type de compteur germanium: le detecteur composite. Utilisation du detecteur TREFLE dans le multidetecteur EUROGAM. France.
Han, L. 1995. "Focusing of a new germanium counter type : the composite detector. Uses of the TREFLE detector in the EUROGAM multidetector; Mise au point d`un nouveau type de compteur germanium: le detecteur composite. Utilisation du detecteur TREFLE dans le multidetecteur EUROGAM." France.
@misc{etde_246812,
title = {Focusing of a new germanium counter type : the composite detector. Uses of the TREFLE detector in the EUROGAM multidetector; Mise au point d`un nouveau type de compteur germanium: le detecteur composite. Utilisation du detecteur TREFLE dans le multidetecteur EUROGAM}
author = {Han, L}
abstractNote = {The aim of this thesis is the development of new types of germanium detectors: the composite detectors. Two types of prototypes are then conceived: the stacked planar detector (EDP) and the assembly of coaxial diodes (TREFLE). They are designed for the multidetector EUROGAM destined to the research of nuclear structure at high angular momentum. The four planar diodes of EDP detector were of 7 cm diameter and of 15 to 20 mm thick. The difference between the calculated and measured photopic efficiency is observed. The importance of surface channel induces a weak resistance of neutron damages. The sputtering method for the surface treatment reducing the germanium dead layer as well as a rule of selection concerning the impurity concentration and the thickness of crystal is helpful for the later production of germanium detector. The CLOVER detector consist of for mean size crystals in the same cryostat. The photopic efficiency is much larger than that of the greatest monocrystal detector. And the granulation of composite detector allowed the Doppler broadening correction of gamma ray observed in the nuclear reaction where the recoil velocity is very high. This new type of detector enable the linear polarization measurement of gamma ray. Twenty-four CLOVER detector are actually mounted in the EUROGAM array. The characteristics measured in source as well as in beam, reported in this thesis, meet exactly the charge account. (author). 47 refs., 61 figs., 18 tabs.}
place = {France}
year = {1995}
month = {May}
}