Active Detection and Imaging of Nuclear Materials with High-Brightness Gamma Rays
A Compton scattering {gamma}-ray source, capable of producing photons with energies ranging from 0.1 MeV to 0.9 MeV has been commissioned and characterized, and then used to perform nuclear resonance fluorescence (NRF) experiments. The performances of the two laser systems (one for electron production, one for scattering), the electron photoinjector, and the linear accelerator are also detailed, and {gamma}-ray results are presented. The key source parameters are the size (0.01 mm{sup 2}), horizontal and vertical divergence (6 x 10 mrad{sup 2}), duration (10 ps), spectrum and intensity (10{sup 5} photons/shot). These parameters are summarized by the peak brightness, 1.5 x 10{sup 15} photons/mm{sup 2}/mrad{sup 2}/s/0.1% bandwidth, measured at 478 keV. Additional measurements of the flux as a function of the timing difference between the drive laser pulse and the relativistic photo-electron bunch, {gamma}-ray beam profile, and background evaluations are presented. These results are systematically compared to theoretical models and computer simulations. NRF measurements performed on {sup 7}Li in LiH demonstrate the potential of Compton scattering photon sources to accurately detect isotopes in situ.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 948985
- Report Number(s):
- LLNL-TR-411038
- Country of Publication:
- United States
- Language:
- English
Similar Records
Techniques and use of a tunable, laser-based, MeV-Class Compton scattering light source
Development of a Watt-level gamma-ray source based on high-repetition-rate inverse Compton scattering
Precision X-Band Linac Technologies for Nuclear Photonics Gamma-Ray Sources
Journal Article
·
Tue Jun 30 00:00:00 EDT 2009
· Physical Review Special Topics. Accelerators and Beams
·
OSTI ID:1010407
Development of a Watt-level gamma-ray source based on high-repetition-rate inverse Compton scattering
Journal Article
·
Sat Jul 01 00:00:00 EDT 2017
· Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
·
OSTI ID:1413688
Precision X-Band Linac Technologies for Nuclear Photonics Gamma-Ray Sources
Conference
·
Wed Aug 31 00:00:00 EDT 2011
·
OSTI ID:1026922