منابع مشابه
Pulse-shape discrimination with PbWO4 crystal scintillators
The light output, α/β ratio, and pulse shape have been investigated at −25◦ C with PbWO4 crystal scintillators undoped, and doped by F, Eu, Mo, Gd and S. The fast 0.01 − 0.06 μs and middle 0.1 − 0.5 μs components of scintillation decay were observed for all the samples. Slow components of scintillation signal with the decay times 1− 3 μs and 13− 28 μs with the total intensity up to ≈ 50% have b...
متن کاملRADIATION INDUCED COLOR CENTERS IN A LA DOPED PbWO4 CRYSTAL
This report presents result of a study on radiation induced color center densities in a La doped lead tungstate (PbWO4) crystal. The creation and annihilation constants of radiation induced color centers were determined by using transmittance data measured for a PbWO4 sample before and during 60Co -ray irradiation at a dose rate of 15 rad/hr. Following a model of color center kinetics, these co...
متن کاملProgress in liquid crystal chemistry
Since their discovery in 1888 by the botanist Friedrich Reinitzer, who studied the melting behavior of cholesteryl benzoates, liquid crystals have developed from a mere curiosity to a highly interdisciplinary research field, with LC displays being the most important application to date [1,2]. However, besides the use of thermotropic liquid crystals for display technology many other applications...
متن کاملImprovement on PbWO4 Crystal Intercalibration Precision from Light Yield Measurements at the INFN-ENEA Regional Center
The Electromagnetic Calorimeter of the CMS experiment, consisting of about 75000 Lead Tungstate scintillating crystals, aims at achieving an extreme precision in photon and electron energy measurement. Since the ultimate energy resolution will be affected by the crystal light yield and its uniformity along the crystal axis, systematic measurements of both these parameters are performed in the R...
متن کاملProgress in Photonic Crystal Vertical Cavity Lasers
Recent progress and achievements in creating single fundamental mode vertical cavity lasers with the technique of etching a 2dimensional pattern of photonic crystal holes into the top distributed Bragg reflector are described. A simulation method for the design of single mode lasers is described, along with accuracy and limitations in predicting modal properties in these devices. Progress in im...
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ژورنال
عنوان ژورنال: Radiation Measurements
سال: 1996
ISSN: 1350-4487
DOI: 10.1016/1350-4487(95)00283-9