Notification:
We are currently experiencing intermittent issues impacting performance. We apologize for the inconvenience.
By Topic

4 \pi NaI(Tl) Detector Array for In Vivo Neutron Activation Analysis

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Byun, S.H. ; Med. Phys. & Appl. Radiat. Sci. Unit, McMaster Univ. ; Prestwich, W.V. ; Chin, K. ; McNeill, F.E.
more authors

A 4pigamma-ray spectrometer has been set up at McMaster Accelerator Laboratory for in vivo neutron activation analysis. To achieve an ideal detection geometry eight long NaI(Tl) detectors with square cross sections were arrayed. A central square hole was left empty for sample access. The pulse processing system comprised a signal sum box, a spectroscopy amplifier and an ADC. Spectrum accumulation in coincidence or anticoincidence mode was also feasible by adding separate shaping and time pick-off electronics to each detector unit. The calibration result showed a fairly high efficiency, a peak efficiency of 0.50 at 1332 keV, due to a sufficient detector thickness of 10.2 cm and a length of 40.6 cm. The spectrometer was used for the aluminum analysis in hand phantoms as the first application. The Al sensitivity and the detection limit achieved for a hand dose of 20 mSv are 1,310 cps/mg, 0.24 mg, respectively. The detection limit has been improved by a factor of 2.5

Published in:

Nuclear Science, IEEE Transactions on  (Volume:53 ,  Issue: 5 )