Risk, Safety & Security
120
2.1
Security forensics
Keywords
Gamma radiation, charge collection in semiconductor
devices, pulse shape analysis techniques, compton
imaging, isotope identification, linear ion trap, portable
mass spectrometry, miniature vacuum systems, security
monitoring, sniffing, electronic nose, detection
Expertise
The University has expertise in developing the technology
needed for gamma ray detection, based on nuclear
physics research strengths. We have one of only three
laboratories in the world which can characterise
position-sensitive semiconductor detectors. This allows us
to support the development of a wide range of radiation
detector technologies, especially devices which
incorporate advanced position-sensitive gamma
detectors. These sensors allow gamma ray interaction
positions to be determined to millimetre accuracy with
the aid of pulse shape analysis.
We also have a notable track record in the area of
portable mass spectrometry. This unique expertise is
being applied in the security sector for the detection and
monitoring of illicit substances (drugs and/or explosives)
and hidden personnel.
The detection technology is based upon miniature linear
ion trap technology, which may be reduced to man
portable suitcase-sized dimensions. The objective is to
apply this technology at border checkpoints to supplement
the work of sniffer dogs. The technology may also be
applied in the healthcare sector for the detection of
disease conditions through their associated biomarkers.
Portable gamma ray spectrometer
A number of isotopes of interest to homeland security
are gamma ray emitters, they can be identified
through the spectroscopic measurement of the
gamma rays they discharge. A spectroscopic imaging
detector can also provide an image of the source,
indicating its size and distribution. This could be
invaluable in detecting illegal radioactive materials.
The University has co-developed a portable gamma
ray spectrometer with radiation detectors made from
cadmium zinc telluride (CZT). The device can function
at ambient temperatures. It can track the movement
of gamma ray interactions through germanium
detectors with millimetre precision. The device is
ideal for security personnel to detect illegal
radioactive materials.
Capabilities and facilities
•
Sensor development
•
Algorithms for gamma ray imaging
•
Characterisation of position-sensitive
semiconductor sensors
•
Modelling and evaluating performance of
radiation detection devices
•
Isotope detection and identification
•
Linear ion trap
•
Portable mass spectrometry
•
Miniature vacuum systems.
2.
Defence and technology
APPLICATION AREAS
•
Aerospace and automotive
•
Biotechnology
•
Built environment
•
Civil engineering
•
Creative industries
•
Defence and security
•
Electronics and electrical systems
•
Energy
•
Financial and business services
•
Healthcare and pharmaceuticals
•
High value manufacturing
•
Information and communication
technology (ICT)
•
Nanotechnology and advanced materials
•
Society and community
•
Sustainability
•
Transport and infrastructure
Also see:
Digital technologies –
1.3
Detector technology for
spectroscopic imaging, page 86
For further information
on all our specialist
centres, facilities and
laboratories
go to page
179
