Publication

Hydrogenated amorphous silicon high flux x-ray detectors for synchrotron microbeam radiation therapy

Publications associées (59)

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search

Simple dose rate measurements for a very high synchrotron X-ray flux

Giorgio Margaritondo

Dose measurements based on methylene blue (MB) bleaching, widely used for ultraviolet light, can also be applied to X-rays including very high flux levels. This method has been tested by using both MB bleaching and Fricke dosimetry for a conventional monoc ...

International Union of Crystallography2009

Microcollimator for Micrometer-Wide Stripe Irradiation of Cells Using 20–30 keV X Rays

Jürgen Brugger, Luis Guillermo Villanueva Torrijo, Kristopher Pataky

The exposure of subnuclear compartments of cells to ionizing radiation is currently not trivial. We describe here a collimator for micrometer-wide stripe irradiation designed to work with conventional high-voltage X-ray tubes and cells cultured on standard ...

2009

A gamma, x-ray and high energy proton radiation-tolerant CIS for space applications

Edoardo Charbon, Herbert Shea, Lucio Carrara, Cristiano Niclass, Noémy Scheidegger

Photon counting is useful in space-based imagers wherever quantitative light- intensity evaluation is necessary. Various types of radiation, from cosmic rays to high-energy proton beams to gamma radiation, have an effect on the functionality and accuracy o ...

2009

Radiation sensitivity of microelectromechanical system devices

Herbert Shea

The sensitivity of microelectromechanical system (MEMS) devices to radiation is reviewed, with an emphasis on radiation levels representative of space missions rather than of operation in nuclear reactors. As a purely structural material, silicon has shown ...

2009

Runaway electron energy measurement using hard x-ray spectroscopy in "Damavand" tokamak

Davoud Iraji

Set of experiments has been developed to study existing runaway electrons in "Damavand" tokamak plasma upon characteristics of hard x-ray emissions produced by collision of the runaway electrons with the plasma particles and limiters. As a first step, spat ...

American Institute of Physics2009

X-ray-Induced Changes in Wettability

Giorgio Margaritondo

We observed that hard X-ray irradiation modifies the wettability of a variety of inorganic materials. The smooth surfaces of all tested inorganic materials (ZnO, p-Si, Al2O3, SrTiO3, TiN, ZnS, CuO, Ag2O, and Cr2O3) change during it-radiation to a state of ...

2009

A Reply to the Comment by Byoung Jip Yoon. ...

2009

We discovered that intense irradiation by hard-x-ray strongly decreases the effects of natural surface tension of water in droplets and capillary tubes. The effect was revealed by direct experimental observations with phase contrast microradiology. A model ...

American Physical Society2008

Full-field hard x-ray microscopy below 30 nm: a challenging nanofabrication achievement

Giorgio Margaritondo

The fabrication of devices to focus hard x-rays is one of the most difficult-and important-challenges in nanotechnology. Here we show that Fresnel zone plates combining 30 nm external zones and a high aspect ratio finally bring hard x-ray microscopy beyond ...

Institute of Physics2008

Site-specific radiation damage on anomalously scattering sites can be used to generate additional phase information in standard single- or multi-wavelength anomalous diffraction (SAD or MAD) experiments. In this approach the data are kept unmerged, down to ...

2007