
Proceedings Paper
Praseodymium activation detector for measuring bursts of 14MeV neutronsFormat | Member Price | Non-Member Price |
---|---|---|
$17.00 | $21.00 |
Paper Abstract
A new, accurate, neutron activation detection scheme for measuring pulsed neutrons has been designed and
tested. The detection system is accurate and sensitive to neutrons with energies above 10 MeV;
importantly, it is insensitive to gamma radiation and to lower-energy (e.g., fission and thermal) neutrons. It
is based upon the use of praesodymium, an element that has a single, naturally occurring isotope (Pr-141), a
significant (n,2n) cross section, and decays by positron emission. Neutron fluences are measured by using
the sum-peak method to count gamma-ray coincidences from the annihilation of the positron decay
product. The system was tested using 14 and 2.45 MeV neutron bursts produced by NSTec Dense Plasma
Focus Laboratory fusion sources. Comparisons with lead, copper, beryllium and silver activation detectors
have been performed. The detection method allows measurement of 14 MeV neutrons with a total error of
± 10%.
Paper Details
Date Published: 11 September 2009
PDF: 6 pages
Proc. SPIE 7449, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI, 744912 (11 September 2009); doi: 10.1117/12.830039
Published in SPIE Proceedings Vol. 7449:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI
Ralph B. James; Larry A. Franks; Arnold Burger, Editor(s)
PDF: 6 pages
Proc. SPIE 7449, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI, 744912 (11 September 2009); doi: 10.1117/12.830039
Show Author Affiliations
B. T. Meehan, National Security Technologies, LLC (United States)
E. C. Hagen, National Security Technologies, LLC (United States)
E. C. Hagen, National Security Technologies, LLC (United States)
C. L. Ruiz, Sandia National Labs. (United States)
G. W. Cooper, Sandia National Labs. (United States)
G. W. Cooper, Sandia National Labs. (United States)
Published in SPIE Proceedings Vol. 7449:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI
Ralph B. James; Larry A. Franks; Arnold Burger, Editor(s)
© SPIE. Terms of Use
