A high-energy x-ray spectrometer diagnostic for the OMEGA laser

A new x-ray diagnostic has been commissioned at the OMEGA laser facility at the University of Rochester. It is a transmission curved crystal spectrometer designed primarily to characterize the hot-electron energy distribution of laser generated plasmas by registering the continuum x-ray spectrum produced by these hot plasmas from 12 to 60 keV. The diagnostic package is assembled in a linear configuration to ride in a standard instrument insertion module. The instrument consists of a nosecone with a blast shield, spectrometer, electronic imager, drive electronics, and battery. The instrument is connected to the external diagnostic processor and control unit by trigger and data fiber optic cables. Time integrated spectra from various targets have been registered with high sensitivity from single shots of the OMEGA laser.

[1]  T. Hahn.  International tables for crystallography , 2002 .

[2]  A. H. Compton,et al.  X-rays in Theory and Experiment , 1935 .

[3]  M. Krause,et al.  Natural widths of atomic K and L levels, Kα X‐ray lines and several KLL Auger lines , 1979 .

[4]  S. Kraft,et al.  High resolution x‐ray absorption spectroscopy with absolute energy calibration for the determination of absorption edge energies , 1996 .

[5]  L. Vainshtein,et al.  Energy Levels of He- and Li-Like Ions (States 1snl, 1 s2nl with n = 2-5) , 1985 .

[6]  M. H. Key,et al.  The Physics of Laser Plasma Interactions , 1989 .

[7]  Samuel A. Letzring,et al.  The upgrade to the OMEGA laser system , 1995 .

[8]  L T Hudson,et al.  A curved crystal spectrometer for energy calibration and spectral characterization of mammographic x-ray sources. , 1996, Medical physics.

[9]  Y. Cauchois.  Spectrographie des rayons X par transmission d'un faisceau non canalisé à travers un cristal courbé - II. , 1932 .

[10]  Sir Ernest Rutherford F.R.S.,et al.  XXXI. The spectrum of the penetrating γ rays from radium B and radium C , 1914 .

[11]  H. Beyer.  Characterization of transmission-type curved-crystal X-ray optics for fast ion-beam spectroscopy , 1997 .

[12]  R. Deslattes,et al.  Noninvasive high-voltage measurement in mammography by crystal diffraction spectrometry. , 1994, Medical physics.

[13]  Marshall,et al.  High temperature of laser-compressed shells measured with Kr34+ and Kr35+ x-ray lines. , 1996, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[14]  L T Hudson,et al.  Flat and curved crystal spectrography for mammographic X-ray sources. , 1996, The British journal of radiology.