Tomographic imaging of a target directly irradiated in experiments on the Iskra-5 iodine laser facility

Journal Article · Wed Dec 29 00:00:00 EST 2010 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2010V040N11ABEH014352· OSTI ID:21541835

Bondarenko, S V; Garanin, R V; Garanin, Sergey G; Zhidkov, N V; Oreshkov, O V; Potapov, S V; Suslov, N A; Frolova, N V ^[1]

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1. Russian Federal Nuclear Center 'All-Russian Research Institute of Experimental Physics', Sarov, Nizhnii Novgorod region (Russian Federation)

We set forth the data of experiments involving direct microtarget irradiation by the 12 second-harmonic beams ({lambda} = 0.66 {mu}m) of iodine laser radiation carried out on the Iskra-5 facility. For microtargets we employed glass shells {approx}500 {mu}m in diameter with {approx}1-{mu}m thick walls, which were filled with a DT mixture at a pressure p{sub DT} {approx} 3-4 atm. In one of these experiments, a tomographic image of the microtarget was recorded from the images obtained using pinhole cameras, which were arranged along seven different directions. The pinhole images were acquired in the X-ray radiation with photon energies above 1.5 keV. The procedure used for reconstructing the volume luminosity of the microtarget is described. An analysis of the tomographic image suggests that the compressed microtarget domain possesses a complex asymmetric shape; 20-30 {mu}m sized structural elements being clearly visible. The resultant data set allowed us to estimate the initial nonuniformity of microtarget surface irradiation by the laser radiation. The rms nonuniformity of microtarget irradiance was estimated at {approx}60 %. (interaction of laser radiation with targets)

• OSTI ID: 21541835
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 40, Issue 11; Other Information: DOI: 10.1070/QE2010v040n11ABEH014352; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
IMAGES
IODINE LASERS
IRRADIATION
KEV RANGE 01-10
LASER RADIATION
LUMINOSITY
MIXTURES
PHOTONS
RADIANT FLUX DENSITY
X RADIATION
BOSONS
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
FLUX DENSITY
GAS LASERS
IONIZING RADIATIONS
KEV RANGE
LASERS
MASSLESS PARTICLES
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS