Applied Radiation and Isotopes

Items from 1 to 20 out of 53 results

article

Erratum to “The production of 82Sr using larger format RbCl targets” [Appl. Radiat. Isotopes 72 (2013) 96–99]

N.P. van der Meulen, T.N. van der Walt, G.F. Steyn, H.G. Raubenheimer

Applied Radiation and Isotopes > 2014 > 83 > Part A > 36

article

Investigation of the relationships between seismic activities and radon level in Western Turkey

M. Tarakçı, C. Harmanşah, M.M. Saç, M. İçhedef

Applied Radiation and Isotopes > 2014 > 83 > Part A > 12-17

The distribution of radon activity is determined from pre-earthquake data. Analysis using Normal, Gamma, Weibull and Rayleigh distributions indicates that the variation of radon levels in seismically active regions is best described by a normal distribution. It was observed that radon levels would change in compressive fault lines prior to earthquake. Besides that it tended to increase before the...

article

The VANILLA sensor as a beam monitoring device for X-ray radiation therapy

J.J. Velthuis, R.P. Hugtenburg, D. Cussans, M. Perry, more

Applied Radiation and Isotopes > 2014 > 83 > Part A > 8-11

Cancer treatments such as intensity-modulated radiotherapy (IMRT) require increasingly complex methods to verify the accuracy and precision of the treatment delivery. In vivo dosimetry based on measurements made in an electronic portal imaging device (EPID) has been demonstrated. The distorting effect of the patient anatomy on the beam intensity means it is difficult to separate changes in patient...

article

The effect of thermal treatment of radiation-induced EPR signals of different polymorphic forms of trehalose

Iva Šarić, Milan Jokić, Boris Rakvin, Marina Kveder, more

Applied Radiation and Isotopes > 2014 > 83 > Part A > 41-46

Electron paramagnetic resonance (EPR) signals induced by γ-radiation in different polymorphic forms of trehalose were studied with dosimetry applications in view. Dose response of trehalose in terms of the concentration of induced paramagnetic centers was studied in the dose range from 0.5 to 50kGy. The dependences of the dose responses of anhydrous β-crystalline trehalose (TRE _β ) and glassy...

article

Activation cross-sections of deuteron induced reactions on natGd up to 50MeV

F. Tárkányi, S. Takács, F. Ditrói, J. Csikai, more

Applied Radiation and Isotopes > 2014 > 83 > Part A > 25-35

Activation cross-sections are presented for the first time for ^nat Gd(d,xn) ^{161,160,156(m+), 154,154m1,154m2,153,152(m+),151(m+)} Tb, ^nat Gd(d,x) ^159, ^153, ¹⁵¹ Gd and ^nat Gd(d,x) ¹⁵⁶ Eu reactions from their respective thresholds up to 50MeV. The cross-sections were measured by the stacked-foil irradiation technique and by using high resolution...

article

Assessment of a sequential phase extraction procedure for uranium-series isotope analysis of soils and sediments

P.O. Suresh, A. Dosseto, H.K. Handley, P.P. Hesse

Applied Radiation and Isotopes > 2014 > 83 > Part A > 47-55

The study of uranium-series (U-series) isotopes in soil and sediment materials has been proposed to quantify rates and timescales of soil production and sediment transport. Previous works have studied bulk soil or sediment material, which is a complex assemblage of primary and secondary minerals and organic compounds. However, the approach relies on the fractionation between U-series isotopes in primary...

article

Testing which is the fitter position sensor for a cyclotron liquid target

Osvaldo L. da Costa

Applied Radiation and Isotopes > 2014 > 83 > Part A > 37-40

The [ ¹⁸ F]FDG has 109.7min half-life, there is a period about 6h between the beginning of [ ¹⁸ O]H ₂ O irradiation until the PET–CT exam. Any fail in production chain will result in delay to the PET–CT exam. The absence of the position signs from [ ¹⁸ O]H ₂ O target valve may result in ¹⁸ F production loss. Three types of position sensors were tested...

article

Activation cross-sections of long lived products of deuteron induced nuclear reactions on dysprosium up to 50MeV

F. Tárkányi, F. Ditrói, S. Takács, J. Csikai, more

Applied Radiation and Isotopes > 2014 > 83 > Part A > 18-24

Activation cross-sections for production of ^162m,161,155 Ho, ^{165,159,157,155} Dy and ^{161,160,156,155} Tb radionuclides in deuteron induced nuclear reactions on elemental dysprosium were measured up to 50MeV for practical application and the test of the predictive power of nuclear reaction model codes. A stacked-foil irradiation technique and off-line gamma-ray spectrometry were...

article

Experimental assessment of the coincidence summing corrections in gamma-ray spectrometry of bulk samples

T. Boshkova

Applied Radiation and Isotopes > 2014 > 83 > Part A > 1-7

This work presents an experimental approach for estimation of the true coincidence-summing (TCS) correction for volume sources on the basis of TCS dependence on the source-to-detector distance. Firstly, it is shown that the TCS dependence on the source-to-detector distance can be linearized for point source geometry. If this linear dependence is established then TCS correction for an arbitrary source-to-detector...

article

Editorial Board and Publication Information

Applied Radiation and Isotopes > 2014 > 83 > Part A > IFC

article

A study of the energy deposition profile of proton beams in materials of hadron therapeutic interest

Rafael Garcia-Molina, Isabel Abril, Pablo de Vera, Ioanna Kyriakou, more

Applied Radiation and Isotopes > 2014 > 83 > Part B > 109-114

The energy delivered by a swift proton beam in materials of interest to hadron therapy (liquid water, polymethylmethacrylate or polystyrene) is investigated. An explicit condensed-state description of the target excitation spectrum based on the dielectric formalism is used to calculate the energy-loss rate of the beam in the irradiated materials. This magnitude is the main input in the simulation...

article

Editorial Board and Publication Information

Applied Radiation and Isotopes > 2014 > 83 > Part B > IFC

article

Updated model for dielectric response function of liquid water

Michael Dingfelder

Applied Radiation and Isotopes > 2014 > 83 > Part B > 142-147

A modified and updated version of the model of the dielectric response function of liquid water as currently implemented in the PARTRAC code is presented. The updated version takes advantage of the newer experimental information from the Sendai group and implements some improvements in modeling and usability.

article

Electron scattering cross sections from anthracene over a broad energy range (0.00001–10,000eV)

A.G. Sanz, M.C. Fuss, F. Blanco, F. Carelli, more

Applied Radiation and Isotopes > 2014 > 83 > Part B > 68-76

We report a computational investigation of electron scattering by anthracene (C ₁₄ H ₁₀ ) in the gas phase. Integral and differential cross sections have been calculated by employing two distinct ab-initio quantum scattering methods: the symmetry adapted–single centre expansion method (ePOLYSCAT) and a screening corrected form of the independent atom model (IAM–SCAR) at low and high...

article

Simulating liquid water for determining its structural and transport properties

Daniel Arismendi-Arrieta, Juan S. Medina, George S. Fanourgakis, Rita Prosmiti, more

Applied Radiation and Isotopes > 2014 > 83 > Part B > 115-121

Molecular dynamics simulations are carried out for calculating structural and transport properties of pure liquid water, such as radial distribution functions and self-diffusion and viscosity coefficients, respectively. We employed reparameterized versions of the ab initio water potential by Niesar, Clementi and Corongiu (NCC). In order to investigate the role of the electrostatic contribution, the...

article

Low-energy electron and positron transport in gases and soft-condensed systems of biological relevance

R.D. White, W. Tattersall, G. Boyle, R.E. Robson, more

Applied Radiation and Isotopes > 2014 > 83 > Part B > 77-85

We present a study of electron and positron transport in water in both the gaseous and liquid states using a Boltzmann equation analysis and a Monte-Carlo simulation technique. We assess the importance of coherent scattering processes when considering transport of electrons/positrons in dense gases and liquids. We highlight the importance of electron and positron swarm studies and experiments as a...

article

Advancing the modeling in particle therapy: From track structure to treatment planning

C. Wälzlein, M. Krämer, E. Scifoni, M. Durante

Applied Radiation and Isotopes > 2014 > 83 > Part B > 171-176

We present a series of implementations on Monte Carlo track structure level which might have an impact on treatment planning for particle therapy. We evaluated the effect of multiple ion scattering and radical diffusion on the nanoscopic radial dose. Our cross section database for electron interactions was extended to be able to predict the sensitizing effect of gold nanoparticles in particle therapy...

article

Heterochromatinization associated with cell differentiation as a model to study DNA double strand break induction and repair in the context of higher-order chromatin structure

Martin Falk, Emilie Lukášová, Lenka Štefančíková, Elena Baranová, more

Applied Radiation and Isotopes > 2014 > 83 > Part B > 177-185

Cell differentiation is associated with extensive gene silencing, heterochromatinization and potentially decreasing need for repairing DNA double-strand breaks (DSBs). Differentiation stages of blood cells thus represent an excellent model to study DSB induction, repair and misrepair in the context of changing higher-order chromatin structure. We show that immature granulocytes form γH2AX and 53BP1...

article

Dose point kernels in liquid water: An intra-comparison between GEANT4-DNA and a variety of Monte Carlo codes

C. Champion, S. Incerti, Y. Perrot, R. Delorme, more

Applied Radiation and Isotopes > 2014 > 83 > Part B > 137-141

Modeling the radio-induced effects in biological medium still requires accurate physics models to describe the interactions induced by all the charged particles present in the irradiated medium in detail. These interactions include inelastic as well as elastic processes. To check the accuracy of the very low energy models recently implemented into the GEANT4 toolkit for modeling the electron slowing-down...

article

Dependence of simulated positron emitter yields in ion beam cancer therapy on modeling nuclear fragmentation

Armin Lühr, Marlen Priegnitz, Fine Fiedler, Nikolai Sobolevsky, more

Applied Radiation and Isotopes > 2014 > 83 > Part B > 165-170

In ion beam cancer therapy, range verification in patients using positron emission tomography (PET) requires the comparison of measured with simulated positron emitter yields. We found that (1) changes in modeling nuclear interactions strongly affected the positron emitter yields and that (2) Monte Carlo simulations with SHIELD-HIT10Areasonably matched the most abundant PET isotopes ¹¹ C and...

Volume:
83
Year:
2014

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Part C (22)
Part B (21)
Part A (10)

Keywords

ELECTRON SCATTERING (3)
LIQUID WATER (3)
MONTE CARLO (3)
THERMOLUMINESCENCE (3)
ABSORBED DOSE (2)
BONNER SPHERE SPECTROMETER (2)
CYCLOTRON (2)
DEUTERON IRRADIATION (2)
ELASTIC CROSS SECTIONS (2)
FINITE ELEMENT ANALYSIS (2)
HEAT TRANSFER (2)
IN VIVO DOSIMETRY (2)
IRRADIATION (2)
MONTE CARLO SIMULATIONS (2)
NEUTRON SPECTRUM (2)
PHYSICAL YIELD (2)
PROTON BEAM (2)
RADIATION DAMAGE (2)
TRACK STRUCTURE (2)
AB-INITIO QUANTUM CHEMICAL CALCULATIONS (1)
ANTHRACENE (1)
AQUATIC LIRIUM (1)
ARCHAEOLOGY (1)
ARTIFICIAL NEURAL NETWORKS (1)
BENCHMARKS (1)
BIOMOLECULES (1)
BRAGG CURVE (1)
BRAGG PEAK (1)
CAPTURE (1)
CASO4:DY (1)
CAVITATION (1)
CHARGE TRANSFER COLLISIONS (1)
CHEST CT EXAMINATION (1)
CHROMATIN SENSITIVITY TO DSB INDUCTION (1)
CLAY SEPARATION (1)
CMOS (1)
CO (1)
COBALT 60 (1)
COINCIDENCE SUMMING CORRECTIONS (1)
COMPLEX DNA DAMAGE (1)
CR MAMMOGRAPHY (1)
CROSS SECTIONS (1)
DECONVOLUTION OF GLOW CURVES (1)
DEPTH–DOSE PROFILE (1)
DETERMINATION OF KINETIC PARAMETERS (1)
DIODE (1)
DIPOLE-INDUCED EXCITATIONS (1)
DISTORTED WAVE (1)
DNA DAMAGE (1)
DNA DOUBLE STRAND BREAK (DSB) REPAIR (1)
DNA DOUBLE-STRAND BREAKS (DSBS) (1)
DOSE (1)
DOSE DISTRIBUTION (1)
DOSE POINT KERNEL (1)
DOSIMETRY (1)
DOSIMETRY SYSTEM (1)
DYSPROSIUM AND TERBIUM RADIO-ISOTOPES (1)
DYSPROSIUM TARGET (1)
EARTHQUAKES (1)
EBT2 (1)
EFFECTIVE DOSE (1)
ELASTIC SCATTERING OF IONS (1)
ELECTRON BEAM DOSIMETRY (1)
ELECTRON EXCITATION (1)
ELECTRON SCATTERING CROSS SECTIONS (1)
ELECTRONS (1)
ENERGY LOSS DISTRIBUTION FUNCTION (1)
EPR DOSIMETRY (1)
EXCAVATIONS (1)
FAULT LINES (1)
FDG-18 (1)
FLUENCE (1)
FLUENCE-TO-DOSE CONVERSION COEFFICIENTS (1)
FORMATION OF CHROMOSOMAL TRANSLOCATIONS (1)
GADOLINIUM AND EUROPIUM RADIOISOTOPES (1)
GADOLINIUM TARGET (1)
GAMMA IRRADIATION (1)
GAMMA RAYS AND PROTON BEAMS (1)
GAMMA-RAY SPECTROMETRY (1)
GEANT4-DNA (1)
GOLD NANOPARTICLES (1)
HADRON THERAPY (1)
HADRONTHERAPHY (1)
HCN (1)
HDR BRACHYTHERAPY (1)
HEAD (1)
HETEROCHROMATIN (1)
HFO2:TB (1)
HIGH DOSE RATE (1)
HIGH RATE (1)
HIGHER-ORDER CHROMATIN STRUCTURE (1)
HIGHER-ORDER CHROMATIN STRUCTURE AND DSB REPAIR (1)
HOLMIUM (1)
HOT WIRE (1)
HYDROTHERMAL (1)
IMMATURE AND TERMINALLY DIFFERENTIATED GRANULOCYTES (1)
INELASTIC CROSS SECTIONS (1)
INTEGRAL DOSIMETRY (1)
ION BEAM CANCER THERAPY (1)
ION-BEAM THERAPY (1)
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Applied Radiation and Isotopes

Erratum to “The production of 82Sr using larger format RbCl targets” [Appl. Radiat. Isotopes 72 (2013) 96–99]

Investigation of the relationships between seismic activities and radon level in Western Turkey

The VANILLA sensor as a beam monitoring device for X-ray radiation therapy

The effect of thermal treatment of radiation-induced EPR signals of different polymorphic forms of trehalose

Activation cross-sections of deuteron induced reactions on natGd up to 50MeV

Assessment of a sequential phase extraction procedure for uranium-series isotope analysis of soils and sediments

Testing which is the fitter position sensor for a cyclotron liquid target

Activation cross-sections of long lived products of deuteron induced nuclear reactions on dysprosium up to 50MeV

Experimental assessment of the coincidence summing corrections in gamma-ray spectrometry of bulk samples

Editorial Board and Publication Information

A study of the energy deposition profile of proton beams in materials of hadron therapeutic interest

Editorial Board and Publication Information

Updated model for dielectric response function of liquid water

Electron scattering cross sections from anthracene over a broad energy range (0.00001–10,000eV)

Simulating liquid water for determining its structural and transport properties

Low-energy electron and positron transport in gases and soft-condensed systems of biological relevance

Advancing the modeling in particle therapy: From track structure to treatment planning

Heterochromatinization associated with cell differentiation as a model to study DNA double strand break induction and repair in the context of higher-order chromatin structure

Dose point kernels in liquid water: An intra-comparison between GEANT4-DNA and a variety of Monte Carlo codes

Dependence of simulated positron emitter yields in ion beam cancer therapy on modeling nuclear fragmentation

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