A5072835716- Advanced Radiotherapy Techniques
- Radiation Therapy and Dosimetry
- Electron and X-Ray Spectroscopy Techniques
- Surface and Thin Film Phenomena
- Advanced Chemical Physics Studies
- Radiation Detection and Scintillator Technologies
- Radiation Effects in Electronics
- Electronic and Structural Properties of Oxides
- Ga2O3 and related materials
- Superconductivity in MgB2 and Alloys
- Nuclear physics research studies
- Trace Elements in Health
- Prostate Cancer Diagnosis and Treatment
- Medical Imaging Techniques and Applications
- Atomic and Molecular Physics
- Alzheimer's disease research and treatments
- Tissue Engineering and Regenerative Medicine
- Corneal Surgery and Treatments
- 2D Materials and Applications
- Iron-based superconductors research
- Image Enhancement Techniques
- Optical and Acousto-Optic Technologies
- Photoacoustic and Ultrasonic Imaging
- Corneal surgery and disorders
- Topological Materials and Phenomena
Frederiksberg Hospital
2024
Center for Clinical Research and Prevention
2024
Mental Health Services
2024
Region of Southern Denmark
2024
Aarhus University Hospital
2010-2024
Université Toulouse III - Paul Sabatier
2018
Inserm
2018
University of California, Davis
2010-2013
University of California, Berkeley
2012
Aarhus University
2001-2007
Tumour hypoxia is one of the limiting factors in obtaining tumour control radiotherapy. The high-LET region a beam heavy charged particles such as carbon ions located distal part Bragg peak. A modulated or spread out peak (SOBP) weighted function several peaks at various energies, which however results dilution dose-average LET target volume. Here, we investigate possibility to redistribute by dedicated treatment plan optimisation, order maximise This may be strategy potentially overcome...
We have studied the electronic structure of semimetal surface Bi(110) by high-resolution angle-resolved photoemission using synchrotron radiation. Several states are found very close to Fermi level giving rise a complex surface. As consequence, is much better metal than bulk, fact which could help explain observation superconductivity in granular systems built from small Bi clusters.
Angle-resolved photoemission data from Al(001) taken with photon energies up to several hundred electron volts show an unexpected surface sensitivity at high energies. The state the center of Brillouin zone can be clearly observed higher than 700 eV. bulk intensity ratio appears increase energy, despite longer inelastic mean-free path electrons and increased vibrational amplitude surface. We explain this surprising behavior by considering effect phonon excitation in event.
Abstract Accurate surface-dose measurements in proton therapy are challenging and often of poor spatial resolution for most dosimeter types. However, optically stimulated luminescence (OSL) based 2D dosimeters could provide the required dose resolution. The aim this study was to investigate dosimetric precision energy dependence an in-house made reusable composed a silicone-film containing OSL-active nanoparticles. irradiated with clinical field readout compared results from commercial...
A deeper understanding of biological mechanisms to promote more efficient treatment strategies in proton therapy demands advances preclinical radiation research. However this is often limited by insufficient availability adequate infrastructures for precision image guided small animal irradiation. The project SIRMIO aims at filling gap developing a portable image-guided research platform irradiation, be used clinical facilities and allowing similar treatment, when scaled down the size. This...
The correlated 3d sulphide BaVS_3 is a most interesting compound because of the apparent coexistence one-dimensional and three-dimensional properties. Our experiments explain this puzzle shed new light on its electronic structure. High-resolution angle-resolved photoemission measurements in 4eV wide range below Fermi level explored weakly a_1g wide-band strongly e_g narrow-band d-electrons that responsible for complicated behavior material. relevant result evidence a_1g--e_g inter-band...
Incorporating birefringence the Brillouin scattering kinematics of off-axis pure transverse (T1), quasi-transverse (T2), and quasi-longitudinal (L) phonons in hexagonal crystals has been derived case where optic axis lies plane. Numerical results are given for CdS. For T1 four possible diffraction geometries found a certain region phonon frequencies angles. Outside this two configurations obtained. The directional dependence anisotropic collinear is discussed. It shown that no lower cut-off...
We have measured angle-resolved photoemission spectra from Al(001) over a large range of temperatures and photon energies. These data were analyzed using model that allows one to calculate the intensity for transitions with simultaneous excitation/absorption 0, 1, 2, etc., phonons. By making simple simulation line shape, we show so-called direct transition (or quasiparticle) peaks always contain significant contribution events excitation and/or absorption 1 2 phonons, i.e., are actually...
The interplay between the surface phase transition on \ensuremath{\alpha}-Ga(010) and electronic structure was studied by temperature-dependent high-resolution angle-resolved photoemission using synchrotron radiation. causes several changes in spectral features. Most importantly, it is accompanied a decrease of intensity around Fermi level large fractions Brillouin zone. Moreover, leads to quasidiscontinuous change linewidth dangling-bond state at $\overline{C}.$ Finally, an observed...
High-resolution angle-resolved photoemission (ARPES) displays quasi-one dimensional (1D) electronic states in the insulating molybdenum red bronze ${\mathrm{K}}_{0.33}{\mathrm{MoO}}_{3},$ good qualitative agreement with band structure calculations. Combined ARPES, optical conductivity, and electrical resistivity data underline importance of defects which pin Fermi level within gap. The ARPES line shape exhibits same strong-coupling features observed blue...
Engineered heart tissue (EHT) is a potential therapy for failure and the basis of functional in vitro assays novel cardiovascular treatments. Self-organizing EHT can be generated fiber form, which makes assessment contractile function convenient with force transducer. Contractile key parameter performance. Analysis data often performed manually; however, this approach time consuming, incomplete subjective. Therefore, purpose study was to develop computer algorithm efficiently objectively...
We suggest that valence band photoelectron diffraction can be used to decompose a solid's density of states (DOS) into components different symmetry. This approach is illustrated by breaking down the aluminum its s and p components. The results reveal more s-like DOS at bottom p-like near Fermi level, in qualitative agreement with calculations. A quantitative comparison does, however, show measured contributions are narrower, i.e., ``atomiclike'' than calculated ones. Possible reasons discussed.