Showing papers in "Radiation Measurements in 2009"

TL;DR: Thomsen et al. as mentioned in this paper proposed a post-IR IR dating protocol on K-feldspar extracts from a variety of locations and depositional environments and compare the results with those from the conventional IR at 50°C protocol.

TL;DR: Radial plots are bivariate scatterplots where the slope of a line connecting the origin (x = 0,y = 0) of a radial plot with a data point (xj,yj) equals zj, and the horizontal distance along x-axis is a measure if its precision.

TL;DR: In this article, a gamma-ray spectrometer system was used to determine the natural radioactivity in surface soil samples collected from various geological formations in urban areas of the northern highlands of Jordan.

TL;DR: In this article, the authors examined the relationship between the loss of IRSL and TL signals with preheating, and the effect of prior IRSL on the TL signal, using IRSL measured at 50°C and a SAR protocol, and examined the dependence on preheat temperature of equivalent dose (D e ), laboratory fading rate ( g ), and resulting luminescence age, from three sedimentary potassium-rich feldspar extracts.

TL;DR: In this article, a single-aliquot regenerative-dose (SAR) protocol for measuring the equivalent dose using the thermally-transferred OSL (TT-OSL) signal is proposed.

TL;DR: An alternative method for evaluating gross alpha and beta radioactivity in water was developed by performing alpha counting using a surface barrier detector and gamma-ray spectrometry using a NaI(Tl) scintillation detector as mentioned in this paper.

TL;DR: In this paper, the authors show several analytical and physical limits of the SSE function when applied on Lower Pleistocene samples with expected ages in excess of one million years, and check other mathematical functions to obtain a closer fit to the analytical data.

TL;DR: In this paper, the radiation transport and dose reduction properties of lunar soil with respect to selected heavy ion beams with charges and energies comparable to some components of the galactic cosmic radiation (GCR), using soil samples returned by the Apollo missions and several types of synthetic soil glasses and lunar soil simulants.

TL;DR: Wang et al. as mentioned in this paper proposed a modified TT-OSL protocol for the application to 40-60μm Chinese loess samples of the SAR thermally transferred OSL protocol.

TL;DR: In this paper, a review article addresses the art and science of specific technique-the "Template Synthesis" (TS) used as a route in the development of nano-micromaterials and structures involving metals, non-metals, semiconductors, magnetic multilayered nanowires, conducting polymers, glasses, nanotubules, wires and whiskers etc.

TL;DR: Pulsed stimulation has earlier been proven useful for several applications in dosimetry and luminescence research as mentioned in this paper, and a Photon Timer attachment to the Riso reader has been developed which measures data at 100 ps resolution.

TL;DR: In this article, the total mass attenuation coefficients (μm) for Ti, Ni and Ti x Ni 1 − x (x = 0.7, 0.6, 0.4 and 0.3 ) alloys were measured at 22.1, 25.0, 59.5 and 88.0

TL;DR: In this article, a multidisciplinary study of the Roc de Marsal Cave gave us the opportunity to re-examine the known problem posed by U-series disequilibria in sediments in the field of palaeodosimetric dating.

TL;DR: In this paper, a comparison of violet and blue-light stimulated luminescence (VSL) signals from quartz contains contribution from deep traps that are otherwise not accessible with blue light (470-nm) also contains the typical fast and slow components observed with the blue light stimulation.

TL;DR: In this article, the authors present initial results regarding the dosimetric properties as determined by thermoluminescence (TL) from two alumina-rich electronic components from a USB flash drive.

TL;DR: In this paper, the results of the spectrometry using four extended-range Bonner sphere spectrometers of four different institutes are reported. But, the ability of the Bonner spheres to provide reliable integral quantities like fluence and ambient dose equivalent is well demonstrated in this exercise.

TL;DR: The results of a systematic investigation of the potential use of fingernails as retrospective radiation dosimeters are reported, finding some promising aspects, but the reported results were generally inconclusive.

TL;DR: In this article, a survey regarding U, Th and K radionuclide and terrestrial gamma dose measurement was carried out by means of NaI(TI) gamma spectroscopic system and a dose rate meter, respectively.

TL;DR: In the ESR dating, three basic parametric U-uptake models have been applied for dating teeth: early, closed system, linear and recent U-UUs.

TL;DR: In this paper, apatite fission track dating and time-temperature thermal history modeling were carried out on 11 samples collected from Jurassic sandstones to establish the tectonic evolution of the eastern Sichuan basin.

TL;DR: In this article, the authors compare the response of different active detectors and passive dosemeters in a well-characterised workplace field using Monte Carlo simulations of the radiation field and the experimental determination of the neutron spectra with various Bonner Sphere Spectrometers.

TL;DR: It is demonstrated that the RPL-GRD is suitable for mailed dosimetry in a quality assurance (QA) audit program and to compare it with LiF-TLD powder.

TL;DR: Gamma radiation from natural radionuclides in thirty eight rock samples collected from Southeastern Nigeria was measured using gamma-ray spectrometry method as mentioned in this paper, and the results obtained for the radium equivalent activity and the external hazard index show that two of the samples, granite and pegmatite exceeded the recommended limits of 370 Bq kg −1 and 1, respectively.

TL;DR: In this paper, the potential of optically stimulated luminescence of wire-bond chip card modules, used in health insurance, ID, cash and credit cards for retrospective and accident dosimetry, is investigated.

TL;DR: The radon content in groundwater sources depends on the radium concentration in the rock of the aquifer as mentioned in this paper. But radon can be released during normal household activities and can pose a greater potential health risk than radon ingested with water.

TL;DR: In this article, the authors describe the latest version of HIBRAC, a computer code to calculate one-dimensional deterministic particle transport, designed for application in treatment-planning systems when using highly energetic ions for radiotherapy.

TL;DR: The Ge-doped fiber with a 50 μm core diameter which showed good thermoluminescence (TL) properties is a promising TL dosimeter but improvements have to be made to reduce the reproducibility within 3% for high energy photons and electrons.

TL;DR: In this paper, the correlation between radon exhalation from ceramic tiles and marble samples and radium-226 content was studied, and it was shown that there is no clear relation between radium content and radon rate, and the ex-halation of radon did not exceed the permissible limits of American Environment Protection Agency (EPA).

TL;DR: In this paper, the authors tried to control the current rectification properties by using asymmetric pH solutions on the two side of nanopore membrane, because this arrangement could adjust the surface charge density distribution inside the nanopore since it depends on the local pH value.

TL;DR: In this article, the luminescence sensitivity of coarse quartz extracted from desert sands in northern China was investigated, and the western deserts' samples are shown to be less sensitive than samples from the eastern deserts with respect to both OSL and the 110 °C TL peak.