Abstract
The detection of black matter in the form of wimp (weakly interactive massive particle) requires the identification of the incident particle so that events due to wimp interactions can be set apart from events due to surrounding radioactivity. Bolometers allow to measure both the energy deposited and the ionization made by a particle. The amount of energy is determined by calorimetry. Wimp detection implies bolometers to run at very low temperature. After a presentation of particle interactions with matter, this thesis describes the physical phenomena involved in heat and ionization measurements. The behaviour of semiconductors at low temperature is investigated and qualitative expectations are drawn about the working of metal-semiconductor interface and the pin diode. An experimental setting is presented. The operating voltage needs to be very low in order to be the least disturbing possible. At so low voltage, a decrease of the ionization signal in terms of time appears. It is shown that this phenomenon is linked to the level density in the forbidden band of the semiconductor and to the intensity of infrared radiation reaching the detector. (A.C.) 193 refs.
Citation Formats
Navick, X F.
Study and optimization of bolometers designed to measure both ionization and heat in order to detect black matter; Etude et optimisation de bolometres a mesure simultanee de l`ionisation et de la chaleur pour la recherche de matiere noire.
France: N. p.,
1997.
Web.
Navick, X F.
Study and optimization of bolometers designed to measure both ionization and heat in order to detect black matter; Etude et optimisation de bolometres a mesure simultanee de l`ionisation et de la chaleur pour la recherche de matiere noire.
France.
Navick, X F.
1997.
"Study and optimization of bolometers designed to measure both ionization and heat in order to detect black matter; Etude et optimisation de bolometres a mesure simultanee de l`ionisation et de la chaleur pour la recherche de matiere noire."
France.
@misc{etde_331986,
title = {Study and optimization of bolometers designed to measure both ionization and heat in order to detect black matter; Etude et optimisation de bolometres a mesure simultanee de l`ionisation et de la chaleur pour la recherche de matiere noire}
author = {Navick, X F}
abstractNote = {The detection of black matter in the form of wimp (weakly interactive massive particle) requires the identification of the incident particle so that events due to wimp interactions can be set apart from events due to surrounding radioactivity. Bolometers allow to measure both the energy deposited and the ionization made by a particle. The amount of energy is determined by calorimetry. Wimp detection implies bolometers to run at very low temperature. After a presentation of particle interactions with matter, this thesis describes the physical phenomena involved in heat and ionization measurements. The behaviour of semiconductors at low temperature is investigated and qualitative expectations are drawn about the working of metal-semiconductor interface and the pin diode. An experimental setting is presented. The operating voltage needs to be very low in order to be the least disturbing possible. At so low voltage, a decrease of the ionization signal in terms of time appears. It is shown that this phenomenon is linked to the level density in the forbidden band of the semiconductor and to the intensity of infrared radiation reaching the detector. (A.C.) 193 refs.}
place = {France}
year = {1997}
month = {Sep}
}
title = {Study and optimization of bolometers designed to measure both ionization and heat in order to detect black matter; Etude et optimisation de bolometres a mesure simultanee de l`ionisation et de la chaleur pour la recherche de matiere noire}
author = {Navick, X F}
abstractNote = {The detection of black matter in the form of wimp (weakly interactive massive particle) requires the identification of the incident particle so that events due to wimp interactions can be set apart from events due to surrounding radioactivity. Bolometers allow to measure both the energy deposited and the ionization made by a particle. The amount of energy is determined by calorimetry. Wimp detection implies bolometers to run at very low temperature. After a presentation of particle interactions with matter, this thesis describes the physical phenomena involved in heat and ionization measurements. The behaviour of semiconductors at low temperature is investigated and qualitative expectations are drawn about the working of metal-semiconductor interface and the pin diode. An experimental setting is presented. The operating voltage needs to be very low in order to be the least disturbing possible. At so low voltage, a decrease of the ionization signal in terms of time appears. It is shown that this phenomenon is linked to the level density in the forbidden band of the semiconductor and to the intensity of infrared radiation reaching the detector. (A.C.) 193 refs.}
place = {France}
year = {1997}
month = {Sep}
}