It is widely accepted that coregistration of anatomical information improves the diagnostic value of functional imaging. At the moment, this is reflected in the success of hybrid scanners using PET and CT imaging. But the combination of PET and MR imaging may also offer advantages, such as higher soft tissue contrast in the MR anatomical images, real simultaneous acquisition, and minimum radiat...

We report on three LYSO crystal batches characterized at the Caltech crystal laboratory for future HEP experiments: Twenty-five 20 cm long crystals for the SuperB experiment; twelve 13 cm long crystals for the Mu2e experiment and 623 14×14×1.5 mm plates with five holes for a LYSO/W Shashlik matrix for a beam test at Fermilab. Optical and scintillation properties measured are longitudinal Transm...

We report in this paper an investigation on radiation damage in 20 cm long BGO crystals produced at SIC as well as 20 cm long PWO-II crystals produced at BTCP for the proposed Panda experiment at GSI. The optical and scintillation properties of BGO and PWOII crystals, such as transmittance, light output and light response uniformity, were measured before and after γ-ray irradiations at differen...

In this paper, we present results of a study on Sb doping in lead tungstate crystals. The crystal growth by modified Bridgman method is described. The segregation coefficient of Sb ions in lead tungstate crystals was determined. The scintillation emission and longitudinal transmittance spectra, light output, decay kinetics and radiation damage were measured. It is found that Sb doping alone is ...

Expressions are derived for the fluorescence response functions of organic solution systems in which non-radiative energy transfer occurs and obeys either Stern-Volmer or Forster kinetics. Scintillation pulse shapes are evaluated for typical crystals, binary and temary liquid solutions, and binary plastic solutions. The scintillation decay time is inadequate to describe the time characteristics...

Spatial resolution improvements in positron emission tomography (PET) can be achieved by developing detector arrays with finer resolution elements. To maintain high sensitivity and image quality, the challenge is to develop a finely pixellated scintillation crystal array with both high detection efficiency and high light collection. High detection efficiency means the crystals must be relativel...

P. Gorla Laboratori Nazionali del Gran Sasso, I-67010, Assergi (L’Aquila), Italy Abstract We present the results obtained in the development of scintillating Double Beta Decay bolometers. Several Mo and Cd based crystals were tested with the bolometric technique. The scintillation light was measured through a second independent bolometer. A 140 g CdWO4 crystal was run in a 417 h live time measu...

Abstract Eu:CaAl 2 O 4 , Eu:SrAl and Eu:BaAl crystals with various dopant concentration were synthesized by the optical floating zone method, photoluminescence, scintillation, afterglow properties investigated. Under X-ray irradiation, exhibit a broad emission band at 440, 520, 500 nm due to 5d-4f transitions of Eu 2+ respectively. The decay time constants are consistent typical values . Photol...