A5050926626- Nuclear physics research studies
- Nuclear Physics and Applications
- Quantum Chromodynamics and Particle Interactions
- Advanced Radiotherapy Techniques
- Radiation Dose and Imaging
- Radiation Therapy and Dosimetry
- High-pressure geophysics and materials
- Advanced NMR Techniques and Applications
- Nuclear reactor physics and engineering
- Astronomical and nuclear sciences
- Astro and Planetary Science
- Radiation Detection and Scintillator Technologies
- Radiology practices and education
- Advanced X-ray and CT Imaging
- Atomic and Molecular Physics
- Crystallization and Solubility Studies
- Medical Imaging Techniques and Applications
- Radiation Shielding Materials Analysis
- X-ray Diffraction in Crystallography
- Quantum, superfluid, helium dynamics
- Particle physics theoretical and experimental studies
- Ultrasound in Clinical Applications
- Disaster Response and Management
- Analytical Chemistry and Chromatography
- Breast Cancer Treatment Studies
RMIT University
2009-2024
MIT University
2016
Queensland University of Technology
2006
The Ohio State University
2004-2005
The University of Melbourne
2000-2003
Lead aprons are widely used in medical imaging to protect radiographers and patients from harmful radiation. However, lead is not a desirable material for use wearable radiation protection due its heavy weight, inflexibility, poor durability, toxicity. In this study, we explored the suitability of bismuth oxide (Bi 2 O 3 ) coating textiles as an alternative lead. The intention was demonstrate concept technology that will achieve lead-equivalent lightweight X-ray protective textile with...
In this paper we seek a measure of the neutron density ${}^{208}\mathrm{Pb}$ from analyses intermediate-energy nucleon elastic scattering. The pertinent model for such is based on coordinate space nonlocal optical potentials obtained nuclear ground-state densities. Those give predictions integral observables and angular distributions, which show sensitivity to density. When compared with experiment, correlated electron scattering data, results suggest that has skin thickness...
Purpose To assess and compare the dosimetric parameters obtained between three-dimensional conformal radiotherapy (3DCRT), field-in-field (3DFIF), 5-field intensity-modulated (IMRT MF5), tangential IMRT (tIMRT), volumetric modulated arc therapy (tVMAT), electronic tissue compensation (Ecomp), Hybrid treatment plans. Material Methods Thirty planning computed tomography datasets from patients previously treated with whole breast radiation (WBRT) were utilized in this study. Treatment plans...
Although the exposure to nursing staff is generally lower than allowable radiation worker dose limits, awareness and overcoming fears of essential in order perform routine activities certain departments. Furthermore, staff, whether they are defined as workers or not, must be able respond any radiological emergencies provide care patient affected by radiation. This study aims gauge safety among at a major hospital different departments recommend if further training required. A prospective...
Nucleon total reaction and neutron cross sections to 300 MeV for 12C 208Pb, 65 scattering spanning the mass range, are predicted using coordinate space optical potentials formed by full folding of effective nucleon-nucleon interactions with realistic nuclear ground state densities. Good excellent agreement is found existing data.
Comparisons are made between results of calculations for intermediate energy nucleon-nucleus scattering 12C, 16O, 40Ca, 90Zr, and 208Pb, using optical potentials obtained from global Dirac phenomenology a microscopic Schr\"odinger model. Differential cross sections spin observables the set five nuclei at 65 MeV 200 have been studied to assess relative merits each approach. Total reaction proton-nucleus total neutron-nucleus evaluated compared with data those targets in range 20 800 MeV. The...
The purpose of this study is to evaluate the effectiveness personal radiation shields currently worn in hospital and other diagnostic environments. This was performed with four different radioisotopes; 18F, 99mTc, 124I 131I. 18F results showed a decrease dose 0.5-mm Pb shielding but reduction provided does not warrant its use clinically. testing demonstrated that enhancement can occur greater shield thicknesses. PET isotope be adequately shielded using 0.25-mm equivalent aprons any higher...
A facility for detection of scattered neutrons in the energy interval 50–130 MeV, nucleon assembly, has recently been installed at 20–180 MeV neutron beam line The Svedberg Laboratory, Uppsala. First results on elastic scattering from 12C and 208Pb 96 incident are presented. This experiment represents highest where ground state resolved first excited scattering. compared with modern optical model predictions.Received 6 December 2002DOI:https://doi.org/10.1103/PhysRevC.67.031601©2003 American...
Medium modified effective two nucleon interactions have been defined for protons incident upon ${}^{12}\mathrm{C}$ with energies ranging from 40 to 800 MeV. Those folded ground state density matrices a large space shell model of give complex nonlocal optical potentials. With those the elastic scattering differential cross sections and analyzing powers analyzed. Good results are obtained when linked $\mathrm{NN}$ that fit data exchange amplitudes in lead strong nonlocality potentials taken...
Total reaction cross sections are predicted for nucleons scattering from various nuclei. Projectile energies to 300 MeV considered. So also mass variations of those at selected energies. All predictions have been obtained coordinate space optical potentials formed by full folding effective two-nucleon (NN) interactions with one body density matrix elements (OBDME) the nuclear ground states. Good comparisons data result when NN defined medium modification free t matrices used. Coupled...
The polarization-transfer coefficient ${D}_{{\mathrm{nn}}^{\ensuremath{'}}}$ in the elastic scattering of 150-MeV protons from ${}^{11}\mathrm{B}$ has been measured angular range $5\ifmmode^\circ\else\textdegree\fi{}<{\ensuremath{\theta}}_{\mathrm{c}.\mathrm{m}.}<31\ifmmode^\circ\else\textdegree\fi{}.$ Significant deviations unity are observed starting around a center-of-mass angle $23\ifmmode^\circ\else\textdegree\fi{}.$ variation is analyzed using phenomenological and microscopically...
Cross sections and analyzing powers for the ${}^{11}\mathrm{B}(\stackrel{\ensuremath{\rightarrow}}{p}{,p}^{\ensuremath{'}})$ reaction have been measured using a 150-MeV polarized proton beam from AGOR cyclotron at KVI. For stronger inelastic transitions, also spin-flip probabilities extracted. To predict cross spin observables microscopic (coordinate space) model of elastic scattering has used, whereas calculations were performed in distorted-wave approximation. In medium-modified...
Total cross sections for neutron scattering with energies between 10 and $600\phantom{\rule{0.3em}{0ex}}\mathrm{MeV}$ from nine nuclei spanning the mass range $^{6}\mathrm{Li}\phantom{\rule{0.5em}{0ex}}\text{to}\phantom{\rule{0.5em}{0ex}}^{238}\mathrm{U}$ have been analyzed using a simple function of three parameters. The values those parameters which total cross-section data are replicated vary smoothly energy target may themselves be represented by functions mass.
<br><b>Aims:</b> This study investigates the impact of cine acquisition mode on dosimetric characteristics a Varian aS500 amorphous silicon electronic portal imaging device (a-Si EPID). <b>Materials and Methods:</b> The performance an a-Si EPID operated in was assessed compared to its when integrated dose measurements using ionization chamber. conducted at different photon energies as function delivered dose, rate, multileaf collimator speed, field size, phantom thickness,...
Radiological interventions play an increasingly relevant role in cardiology. Due to the inherent risks of ionizing radiation, proper care must be taken with monitoring and optimizing dose delivered angiograms pose as low risk possible staff patients. Dose optimization is particularly pertinent teaching hospitals, where longer procedure times are at necessary accommodate needs junior staff, thus impart a more significant radiation dose. This study aims analyze effects different protocol...
The differential cross sections and analyzing powers from the elastic scattering of 25 40 MeV protons many nuclei have been studied. Analyses made using a fully microscopic model proton-nucleus seeking to establish means appropriate for use in analyses radioactive beam hydrogen with ion energies 25A 40A MeV.
Total reaction cross sections are predicted for proton scattering from various nuclei. A simple functional form has been used that reproduces them the (15) nuclei spanning mass range ${}^{9}\mathrm{Be}$ to ${}^{238}\mathrm{U}$ and energies 10--300 MeV.
An extensive survey and analysis of cross-section analysing power data from proton elastic scattering at energies 25 to 40 MeV is presented. The are compared with predictions obtained a full folding specification the proton–nucleus optical potentials. Isotope energy variation explained.
The total cross section for neutron scattering from $^{208}\mathrm{Pb}$ with energies between 5 and 600 MeV has been analyzed, extending a previously defined simple function of three parameters to reveal Ramsauer-like effect throughout the whole energy range. This can be parametrized in way so that it may anticipated complete prescription will apply sections other nuclei.