1/7

Positron Emission Particle Tracking (PEPT)Positron Emission Particle Tracking (PEPT)To Study Flow and Mixing To Study Flow and Mixing

in in Twin Screw ExtrusionTwin Screw Extrusion

2/7

Positron Emission Particle TrackingPositron Emission Particle TrackingTracer particle labelled with Positron Emitting Tracer particle labelled with Positron Emitting Isotope generates thousands of pairs of collinear Isotope generates thousands of pairs of collinear gamma photons per secondgamma photons per second

Detection of successive pairs gives tracer location Detection of successive pairs gives tracer location (after removal of scattered photons)(after removal of scattered photons)

3/7

Siemens ECAT PET Scanners (951 and 931)

ADAC Forte PET Scanner

The Positron Imaging Centre University of Birmingham

4/7

The Modular CameraDismantled ECAT camera

5/7

Modular camera installed on Modified Leistritz 27mm TSE

Screw Elements in FOV

6/7Single particle trajectories shown simultaneously

7/7

For More Information Visit: www.PEPTFlow.com Contact: Dr Roy Huzzard

Smithers Rapra Technology LtdShawburyShropshire SY4 4NRTel: +44 (0) 1939 252476Email: rhuzzard@rapra.net