نتایج جستجو برای: optical properties photoluminescencethermoluminescence nuclear radiation detection

تعداد نتایج: 2021035  

Introduction: Medical workers in the departments of radiology, computed tomography, nuclear medicine, and radiotherapy are always exposed to ionizing radiations. Complete blood count (CBC) test is commonly used to monitor the health of radiation workers. The aim of this study was to evaluate the hematological parameters of radiation workers of Isfahan, Iran, and reveal...

2007
M. Chiaberge

We have studied the nuclear emission detected in high-resolution radio and optical data of carefully selected samples of low luminosity AGN (LLAGN) in the local universe. When the Eddington ratio is plotted against the nuclear “radio-loudness” parameter, sources divide according to their physical properties. It is thus possible to disentangle between nuclear jets and accretion disks of differen...

2004
Lei Dong Jimmie A Miller John A Patten

In this paper a new method of in-situ detection of the high pressure phase transformation of semiconductor materials during dead-load scratching is described. This method is based on the simple fact that single crystal silicon is transparent to IR light while metallic materials are not transparent to IR radiation. The sample material used here is silicon, but the same approach can be applied to...

1996
KAIYOU CHEN HSIANG-KUANG CHANG CHENG HO

The strong optical emission of the Crab pulsar allows us to study the polarization properties in detail. Optical pulsed emission can best be understood as synchrotron radiation of relativistic electron-positron pairs in the outer magnetosphere. We calculate the polarization properties of the optical pulses based on the outer gap model, which has explained much of the observed properties of this...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2008
Crissy L Rhodes Simon Lappi Daniel Fischer Sharadha Sambasivan Jan Genzer Stefan Franzen

The optical and electronic properties of aluminum-doped zinc oxide (AZO) thin films on a glass substrate are investigated experimentally and theoretically. Optical studies with coupling in the Kretschmann configuration reveal an angle-dependent plasma frequency in the mid-IR for p-polarized radiation, suggestive of the detection of a Drude plasma frequency. These studies are complemented by oxy...

Introduction: Nuclear moisture density gauges are widely used in construction industry in different countries across the world, including Ghana, on a large scale. Like all irradiating devices, the nuclear gauges should be subjected to radiation safety assessment based on radiation protection and safety principles. Regarding this, the objective of this research was to i...

2014
Fan Yang Hui Yuan Liyuan Zhang Ren-Yuan Zhu

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...

Journal: :iranian journal of radiation research 0
s.a. bagheri physics department, imam hossein university, p.o. box 16575-347, tehran, iran r. malekfar physics department, tarbiat modares university, p.o. box 14115-175, tehran, iran

background: similar to the thermoluminescence (tl) spectra, the optical parameters variations can also be used in tl crystals for dosimetry purposes. these optical parameters can include absorption, transmission and reflection coefficients. materials and methods: single crystals of kbr and kcl which have been used in this research were grown from laboratory grade extra pure precursor powders. c...

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