Hard x-ray and gamma-ray imaging and spectroscopy using scintillators coupled to silicon drift detectors

2008 ◽  
Author(s):  
P. Lechner ◽  
R. Eckhard ◽  
C. Fiorini ◽  
A. Gola ◽  
A. Longoni ◽  
...  
Keyword(s):  
Gamma Ray ◽  
X Ray ◽  
Gamma Ray Imaging ◽  
Silicon Drift Detectors ◽  
Imaging And Spectroscopy

A monolithic array of 77 silicon drift detectors for X-ray spectroscopy and gamma-ray imaging applications

2005 ◽  
Vol 52 (4) ◽  
pp. 1165-1170 ◽  
Author(s):  
C. Fiorini ◽  
M. Bellini ◽  
A. Gola ◽  
A. Longoni ◽  
F. Perotti ◽  
...  
Keyword(s):  
Gamma Ray ◽  
X Ray ◽  
Gamma Ray Imaging ◽  
Silicon Drift Detectors

THE AGILE MISSION AND GAMMA-RAY ASTROPHYSICS

2002 ◽  
Vol 17 (12n13) ◽  
pp. 1799-1808 ◽  
Author(s):  
MARCO TAVANI
Keyword(s):  
Energy Range ◽  
Gamma Ray ◽  
Angular Resolution ◽  
Source Monitoring ◽  
Space Mission ◽  
Quick Response ◽  
Scientific Program ◽  
X Ray ◽  
Imaging Capability ◽  
Gamma Ray Imaging

Gamma-ray astrophysics in the energy range between 30 MeV and 30 GeV is in desperate need of arcminute angular resolution and source monitoring capability. The AGILE Mission planned to be operational in 2004-2006 will be the only space mission entirely dedicated to gamma-ray astrophysics above 30 MeV. The main characteristics of AGILE are the simultaneous X-ray and gamma-ray imaging capability (reaching arcminute resolution) and excellent gamma-ray timing (10-100 microseconds). AGILE scientific program will emphasize a quick response to gamma-ray transients and multiwavelength studies of gamma-ray sources.

Development of a Mercuric Iodide Detector Array For In-Vivo X-Ray Imaging

1994 ◽  
Vol 38 ◽  
pp. 615-624
Author(s):  
Bradley E. Patt ◽  
Jan S. Iwanczyk ◽  
Martin P. Tornai ◽  
Craig S. Levin ◽  
Edward J. Hoffman
Keyword(s):  
Gamma Camera ◽  
Gamma Ray ◽  
Active Area ◽  
Detector Array ◽  
Mercuric Iodide ◽  
X Ray ◽  
X Ray Imaging ◽  
Spatial Performance ◽  
Gamma Ray Imaging

Abstract A nineteen element mercuric iodide (HgI2) detector array has been developed in order to investigate the potential of using this technology for in-vivo x-ray and gamma-ray imaging. A prototype cross-grid detector array was constructed with hexagonal pixels of 1.9 mm diameter (active area = 3.28 mm2) and 0.2 mm thick septa. The overall detector active area is roughly 65 mm2. A detector thickness of 1.2 mm was used to achieve about 100% efficiency at 60 keV and 67% efficiency at 140 keV The detector fabrication, geometry and structure were optimized for charge collection and to minimize crosstalk between elements. A section of a standard high resolution cast-lead gamma-camera collimator was incorporated into the detector to provide collimation matching the discrete pixel geometry. Measurements of spectral and spatial performance of the array were made using 241-Am and 99m-Tc sources. These measurements were compared with similar measurements made using an optimized single HgI2 x-ray detector with active area of about 3 mm2 and thickness of 500 μm.

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