Title :
Absolute number of scintillation photons in liquid xenon by alpha-particles
Author :
Miyajima, M. ; Sasaki, S. ; Tawara, H. ; Shibamura, E.
Author_Institution :
Nat. Lab. for High Energy Phys., Ibaraki, Japan
fDate :
8/1/1992 12:00:00 AM
Abstract :
To apply scintillation material to radiation detectors, a quantity such as the W-value, defined as an average energy expended per ion-pair in gaseous detectors, must be determined experimentally. The authors define the effective WS-value as E 0/Np an average energy dissipated to emit a scintillation photon, if the energy of radiation Eo is completely absorbed in material and the number of scintillation photons Np are emitted. They have attempted to determine Np in liquid xenon due to alpha-particles with an energy of 5.303 MeV from 210Po to estimate WS for scintillation in liquid xenon. The absolute scintillation yield was obtained as 3.26×105 for alpha-particles for 5.303 MeV in liquid xenon. This result followed from fitting the absolute photo-electron yields measured with a VUV sensitive photomultiplier, which was used as a photodiode, to the results of Monte Carlo simulation
Keywords :
Monte Carlo methods; alpha-particle detection and measurement; scintillation counters; xenon; 5.303 MeV; 210Po; E0/Np; Monte Carlo simulation; VUV sensitive photomultiplier; W-value; WS-value; absolute photo-electron yields; alpha-particles; average energy expended per ion-pair; gaseous detectors; liquid Xe; radiation detectors; scintillation photons; Educational institutions; Electrooptic effects; Laboratories; Photomultipliers; Radiation detectors; Rough surfaces; Solid scintillation detectors; Surface roughness; Vacuum systems; Xenon;
Journal_Title :
Nuclear Science, IEEE Transactions on
