Title :
Gamma-Free Smoke and Particle Detector Using Tritiated Foils
Author :
Liu, Baojun ; Alvarez-Ossa, Diego ; Kherani, Nazir P. ; Zukotynski, Stefan ; Chen, Kevin P.
Author_Institution :
Dept. of Electr. & Comput. Eng., Pittsburgh Univ., PA
fDate :
6/1/2007 12:00:00 AM
Abstract :
A smoke and particle ionization detector using tritiated amorphous silicon film as the radiation source is demonstrated. The ion chamber design includes both bipolar and unipolar regions, thereby enhancing the particle detection responsivity. The results show that this gamma-free detector is several-fold to fortyfold more responsive than traditional ionization detectors using Am-241. In addition, this ion chamber can function as a dual detector having both photoelectric and ionization detector responsivities
Keywords :
amorphous semiconductors; elemental semiconductors; semiconductor thin films; silicon; smoke detectors; gamma-free smoke; ion chamber design; particle detector; smoke detection; tritiated foils; Amorphous silicon; Chemical industry; Fires; Gamma ray detection; Gamma ray detectors; Ionization; Radiation detectors; Semiconductor films; Smoke detectors; Testing; High responsivity; ionization; particle detection; smoke detection; tritium;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2007.895971
