Scintillation produced in liquid xenon by alpha particles and gamma rays has been studied as a function of applied electric field. For back scattered gamma rays with energy of about 200 keV, the number of scintillation photons was found to decrease by 64±2% with increasing field strength. Consequently, the pulse shape discrimination power between alpha particles and gamma rays is found to reduc...

The modern photoelectric scintillation detector emerged just 30 years ago out of the rubble of World War II. Kallmann in Germany had the original idea of combining an organic fluor (naphthalene), which is transparent to its fluorescent light, with an electronmultiplier phototube for the detection of single scintillation evants. Hofstadter at Princeton discovered that the inorganic thallium-acti...

We report a new technique with which X-ray absorption measurements of solutions can be made by counting the X-ray induced luminescence from the sample. This technique (scintillation yield) involves the addition of a small amount of scintillator to the sample solution. Simultaneous measurements of X-ray absorption spectra of (CH ) Sn in organic scintillator solutions using photoconductivity and ...

We report an investigation on optical and scintillation properties and radiation hardness of four 20 cm long BSO crystals grown at SIC for the HHCAL detector concept. Their optical and scintillation properties, such as longitudinal transmittance, light output and light response uniformity, were measured before and after γ-ray irradiation. Progresses are observed in optical quality, light output...

Free-Space Optical (FSO) communication is reputed for its ability to proffer solution to the access network bottle-neck but when used over long range communication links, it suffers from scintillation caused by the atmospheric turbulence. The scintillation is modelled using the negative exponential distribution. Hereby, we present the outage probability and the bit error probability equations o...

CeBr3 crystals have been studied to assess their utility as potential gamma ray spectrometers for future ESA planetary missions. Pulse height spectra, scintillation time profiles, X-ray excited emission spectra, and photoluminescence spectra have been recorded as a function of temperature between 78 and 600 K. In addition, the influence of exposing CeBr3 to various doses of gamma rays from a st...

The calibration results are presented for a scintillation hodoscopic spectrometer of charged particles, which has been designed an experiment on the search heavy electron bremsstrahlung photon beam at Pakhra accelerator LPI. relative energy and coordinate resolutions E = 40 MeV δ 22% σx 9.5 mm, respectively. It determined that width electromagnetic showers in transverse direction can be describ...

The methods for absolute (direct) standardization, coincidence method for radionuclides emitting several simultaneous radiations and liquid scintillation counting for radionuclides emitting a single radiation, the obtained results, as the technical basis for a primary radioactivity standard recognition, are shortly reviewed. They were published in many scientific papers. The key and supplementa...

Detecting and quantitating alpha emitting radionuclides are routine tasks in nuclear energy and environmental monitoring. For this purpose, liquid scintillation counting (LSC) is an excellent method because alphas are counted with nearly 100% counting efficiency with low backgrounds, even with severe quenching. Quenching agents such as inorganic acids, organic acids, and extractive scintillator...