A5045336133- Advanced Semiconductor Detectors and Materials
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Astrophysical Phenomena and Observations
- Nuclear Physics and Applications
- Advanced X-ray and CT Imaging
- Gamma-ray bursts and supernovae
- Astrophysics and Cosmic Phenomena
- Advanced X-ray Imaging Techniques
- Astronomy and Astrophysical Research
- Medical Imaging Techniques and Applications
- Pulsars and Gravitational Waves Research
- Calibration and Measurement Techniques
- Astronomical Observations and Instrumentation
- Infrared Target Detection Methodologies
- Chalcogenide Semiconductor Thin Films
- Semiconductor Quantum Structures and Devices
- Stellar, planetary, and galactic studies
- High-pressure geophysics and materials
- Dark Matter and Cosmic Phenomena
- Galaxies: Formation, Evolution, Phenomena
- Adaptive optics and wavefront sensing
- X-ray Spectroscopy and Fluorescence Analysis
- Astro and Planetary Science
- CCD and CMOS Imaging Sensors
National Institute for Astrophysics
2015-2024
Osservatorio di Astrofisica e Scienza dello Spazio
2018-2024
Total (France)
2005-2023
Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna
2003-2018
Pierre Fabre (France)
2018
University of Coimbra
2009-2012
University of Bologna
1980-2010
University of Ferrara
2009-2010
University of Parma
2010
Technical University of Denmark
2010
Over the last decade, cadmium telluride (CdTe) and zinc (CdZnTe) wide band gap semiconductors have attracted increasing interest as X-ray gamma ray detectors. Among traditional high performance spectrometers based on silicon (Si) germanium (Ge), CdTe CdZnTe detectors show detection efficiency good room temperature are well suited for development of compact reliable systems. In this paper, we review current status research in by a comprehensive survey material properties, device...
The All-sky Medium Energy Gamma-ray Observatory (AMEGO) is a probe class mission concept that will provide essential contributions to multimessenger astrophysics in the late 2020s and beyond. AMEGO combines high sensitivity 200 keV 10 GeV energy range with wide field of view, good spectral resolution, polarization sensitivity. Therefore, key study astrophysical objects have unique signatures gamma-ray regime, such as neutron star mergers, supernovae, flaring active galactic nuclei....
Recently, new high-resolution cadmium-zinc-telluride (CZT) drift strip detectors for room temperature gamma-ray spectroscopic imaging were developed by our group. The CZT equipped with orthogonal anode/cathode collecting strips, strips and dedicated pulse processing allow a detection area of 6 × 20 mm2 excellent performance (0.82% FWHM at 661.7 keV). In this work, we investigated the potentialities these prompt spectroscopy (PGS) in boron neutron capture therapy (BNCT). detectors, exploiting...
view Abstract Citations (77) References (123) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Multiwavelength Catalog of Seyfert 2 Galaxies Observed in the 2--10 keV Energy Band Polletta, M. ; Bassani, L. Malaguti, G. Palumbo, C. Caroli, E. This paper is a catalog galaxies observed 2-10 band (339 flux entries). In total, it contains data on 150 objects; for 76 objects, positive detection reported, while remaining sources, σ upper limits to X-ray emission...
We propose a new experimental procedure to study reactivity of H2S+CO2-brine-solid systems under high pressure and temperature conditions (up 990 bar 450°C). A gas loading device has been made in order fill accurately microreactors with absolute quantity gaseous reactants. High concentrations can also be reached securely. The technique synthetic fluid inclusions adapted this procedure. This provides an situ sampling fluids during experiments. After experiments, mass balance species...
In the last two decades, great efforts have been made in development of 3D cadmium-zinc-telluride (CZT) detectors operating at room temperature for gamma-ray spectroscopic imaging. This work presents performance new high-resolution CZT drift strip detectors, recently developed IMEM-CNR Parma (Italy) collaboration with due2lab (Italy). The (19.4 mm × 19.4 6 mm) are organized into collecting anode strips (pitch 1.6 and 0.4 which negatively biased to optimize electron charge collection. cathode...
Abstract Nuclear astrophysics, and particularly nuclear emission line diagnostics from a variety of cosmic sites, has remained one the least developed fields in experimental astronomy, despite its central role addressing number outstanding questions modern astrophysics. Radioactive isotopes are co-produced with stable fusion reactions nucleosynthesis supernova explosions other violent events, such as neutron star mergers. The origin 511 keV positron annihilation observed direction Galactic...
The volume extinction coefficient produced by aerosol particles at wavelength λ is generally proportional to λ−α as found Ånström. On the other hand, particle size spectra frequently give a number density approximately inverse of radius power with exponent ν, Junge. basis computations made using very accurate Mie algorithm, study relationship curve between exponents α and ν for polydispersions different intervals refractive index values. Moreover, set curves obtained realistic particulate...
Two-inch-diameter CdZnTe crystals doped with indium were grown by the boron oxide encapsulated vertical Bridgman technique. The showed large single crystalline yield and low etch pit density. background impurity content was dominated in concentration lower than 1 ppm. High resistivity obtained a procedure for contact preparation developed. mobility-lifetime product of material determined both X-ray irradiation photocurrent spectroscopy. detector prepared this good spectroscopic performance.
CdZnTe crystals were grown by the vertical Bridgman method in closed quartz ampoules. The crystalline quality and impurity content of these studied. Several X-ray detectors cut out crystals. resistivity, emission spectra, μτ product, spectroscopic characteristics extensively measured compared with obtained from boron oxide encapsulated technique. prepared without show good value, resolution, higher reproducibility. influence growth on detector response was discussed.
At DTU Space we have developed a high resolution three dimensional (3D) position sensitive CZT detector for energy astronomy. The design of the 3D is based on Drift Strip principle. determination perpendicular to anode strips performed using novel interpolating technique drift strip signals. in depth direction, made DOI cathode and along with help 10 orthogonal strips. resolutions are at low energies dominated by electronic noise improve therefore increased signal ratio as increases....
PICsIT (Pixellated Imaging CaeSium Iodide Telescope) is the high energy detector of IBIS telescope on–board INTEGRAL satellite. operates in gamma–ray range between 175 keV and 10 MeV, with a typical resolution 10% at 1 an angular 12 arcmin within ~100 square degree field view, possibility to locate intense point sources MeV region few level. based upon modular array 4096 independent CsI(Tl) pixels, ~0.70 cm2 cross–section 3 cm thick. In this work, data handling science operative modes are...
Presently, a great amount of effort is being devoted to the development CdTe and CdZnTe (CZT) detectors for large variety applications such as medical, industrial, space research. We present spectroscopic properties some CZT crystals grown by standard vertical Bridgman method boron oxide encapsulated method, which has been recently implemented at IMEM-CNR (Parma, Italy). In this technique, crystal in an open quartz crucible fully thin layer liquid oxide. This prevents contact between...
We will describe the LAUE project, supported by Italian Space Agency, whose aim is to demonstrate capability build a focusing optics in hard X-/soft gamma-ray domain (80{600 keV). To show lens feasibility, assembling of Laue petal prototype with 20 m focal length ongoing. Indeed, feasibility study, within has demonstrated that made petals feasible. Our goal 80-600 keV energy band. In addition detailed description new LARIX facility, which being assembled, we report results project obtained so far.
In recent years, the development of cadmium zinc telluride (CdZnTe) detectors for x-ray and gamma ray spectrometry has grown rapidly. The good room temperature performance high spatial resolution pixellated CdZnTe make them very attractive in space-borne astronomy, mainly as focal plane new generation hard focusing telescopes. this work, we investigated on spectroscopic two coupled with a custom low noise power readout application specific integrated circuit (ASIC). (10×10×1 10×10×2 mm3...
The authors describe a comparison performed between two types of CdTe detectors operating in different configurations, considering the possibility constructing array for medical and industrial applications, development multi-probe matrix use astrophysics, such as detection 511-keV annihilation radiation. main interest was optimization small probes with cross section few square millimeters having high efficiency good energy resolution 500/700 keV photons. A mounting has been developed which...
A gamma-ray telescope mission concept [gamma ray imager (GRI)] based on Laue focusing techniques has been proposed in reply to the European Space Agency call for ideas within framework of next decade planning (Cosmic Vision 2015–2025). In order optimize design a focal plane this satellite mission, CdZnTe detector prototype tested at Synchrotron Radiation Facility under an ∼100% polarized beam. The spectroscopic, imaging, and timing performances were studied particular its potential as...
We report on the first results obtained from our development project of focusing gamma-rays ($>$60 keV) by using Laue lenses. The lens prototype model has been assembled and tested. describe technique adopted capabilities at about 100 keV.