title: Isotope-specific detection of low-density materials with laser-based monoenergetic gamma-rays.
abstract: 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.
authors.affiliation: Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA. albert6@llnl.gov
authors.forename: F
authors.initials: F
authors.lastname: Albert
authors.forename: S G
authors.initials: SG
authors.lastname: Anderson
authors.forename: G A
authors.initials: GA
authors.lastname: Anderson
authors.forename: S M
authors.initials: SM
authors.lastname: Betts
authors.forename: D J
authors.initials: DJ
authors.lastname: Gibson
authors.forename: C A
authors.initials: CA
authors.lastname: Hagmann
authors.forename: J
authors.initials: J
authors.lastname: Hall
authors.forename: M S
authors.initials: MS
authors.lastname: Johnson
authors.forename: M J
authors.initials: MJ
authors.lastname: Messerly
authors.forename: V A
authors.initials: VA
authors.lastname: Semenov
authors.forename: M Y
authors.initials: MY
authors.lastname: Shverdin
authors.forename: A M
authors.initials: AM
authors.lastname: Tremaine
authors.forename: F V
authors.initials: FV
authors.lastname: Hartemann
authors.forename: C W
authors.initials: CW
authors.lastname: Siders
authors.forename: D P
authors.initials: DP
authors.lastname: McNabb
authors.forename: C P J
authors.initials: CP
authors.lastname: Barty