Isotope-specific detection of low-density materials with laser-based monoenergetic gamma-rays.
What we believe to be the first demonstration of isotope-specific detection of a low-Z and low density object shielded by a high-Z and high-density material using monoenergetic gamma rays is reported. The isotope-specific detection of LiH shielded by Pb and Al is accomplished using the nuclear resonance fluorescence line of L7i at 478 keV. Resonant photons are produced via laser-based Compton scattering. The detection techniques are general, and the confidence level obtained is shown to be superior to that yielded by conventional x-ray and gamma-ray techniques in these situations.
Albert
F
F
Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA. albert6@llnl.gov
Anderson
S G
SG
Anderson
G A
GA
Betts
S M
SM
Gibson
D J
DJ
Hagmann
C A
CA
Hall
J
J
Johnson
M S
MS
Messerly
M J
MJ
Semenov
V A
VA
Shverdin
M Y
MY
Tremaine
A M
AM
Hartemann
F V
FV
Siders
C W
CW
McNabb
D P
DP
Barty
C P J
CP