Characterization and applications of a tunable, laser-based, MeV-class Compton-scattering γ-ray source

被引：97

作者：

Albert, F. ^{[1
]}

Anderson, S. G. ^{[1
]}

Gibson, D. J. ^{[1
]}

Hagmann, C. A. ^{[1
]}

Johnson, M. S. ^{[1
]}

Messerly, M. ^{[1
]}

Semenov, V. ^{[1
]}

Shverdin, M. Y. ^{[1
]}

Rusnak, B. ^{[1
]}

Tremaine, A. M. ^{[1
]}

Hartemann, F. V. ^{[1
]}

Siders, C. W. ^{[1
]}

McNabb, D. P. ^{[1
]}

Barty, C. P. J. ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

来源：

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2010年 / 13卷 / 07期

关键词：

THOMSON SCATTERING; PULSES; BEAMS;

D O I：

10.1103/PhysRevSTAB.13.070704

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A high peak brilliance, laser-based Compton-scattering gamma-ray source, capable of producing quasimonoenergetic photons with energies ranging from 0.1 to 0.9 MeV has been recently developed and used to perform nuclear resonance fluorescence (NRF) experiments. Techniques for characterization of gamma-ray beam parameters are presented. The key source parameters are the size (0.01 mm(2)), horizontal and vertical divergence (6 x 10 mrad(2)), duration (16 ps), and spectrum and intensity (10(5) photons/shot). These parameters are summarized by the peak brilliance, 1.5 x 10(15) photons/mm(2)/mrad(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 photoelectron 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 Li-7 in LiH demonstrate the potential of Compton-scattering photon sources to accurately detect isotopes in situ.

引用

页数：13

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