TITLE

Image reconstruction algorithms for inertial confinement fusion neutron imaging

AUTHOR(S)
Barrera, Carlos A.; Morse, Edward C.; Moran, Michael J.
PUB. DATE
October 2006
SOURCE
Review of Scientific Instruments;Oct2006, Vol. 77 Issue 10, p10E716
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A neutron imaging system is required to diagnose ignition implosions at the National Ignition Facility. Such a system is required to be able to resolve features in the imploded target core as small as 5 μm. The system will use a pinhole-camera-type geometry with a nonideal coded aperture and will employ image restoration techniques. The choice of image reconstruction method will be important in recovering the best possible source images from the recorded data. Monte Carlo transport simulations with MCNP5 make it possible to estimate the performance of the neutron imaging system based on calculated energy-dependent image edits of a failed inertial confinement fusion implosion. Simulations of the recorded neutron images include specific aperture designs, a pixelated energy- and time-dependent scintillator array, and an intensified gated charge coupled device camera for recording the images. An initial series of simulations used a source that was binned into 1 MeV increments from 6 to 18 MeV, an imaging aperture approximately 40 cm from target chamber center, and a detector array at 40 m, for a system magnification of around 100. A modified regularization method used the calculated point spread function of the overall system to deconvolve the simulated images. The results demonstrate the possibility that the imaging system can satisfy the resolution requirements and provide the desired images of the neutron emission source.
ACCESSION #
23073213

 

Related Articles

  • Development of nuclear diagnostics for the National Ignition Facility (invited). Glebov, V. Yu.; Meyerhofer, D. D.; Sangster, T. C.; Stoeckl, C.; Roberts, S.; Barrera, C. A.; Celeste, J. R.; Cerjan, C. J.; Dauffy, L. S.; Eder, D. C.; Griffith, R. L.; Haan, S. W.; Hammel, B. A.; Hatchett, S. P.; Izumi, N.; Kimbrough, J. R.; Koch, J. A.; Landen, O. L.; Lerche, R. A.; MacGowan, B. J. // Review of Scientific Instruments;Oct2006, Vol. 77 Issue 10, p10E715 

    The National Ignition Facility (NIF) will provide up to 1.8 MJ of laser energy for imploding inertial confinement fusion (ICF) targets. Ignited NIF targets are expected to produce up to 1019 DT neutrons. This will provide unprecedented opportunities and challenges for the use of nuclear...

  • Biological imaging with a neutron microscope. Cremer, J.T.; Piestrup, M.A.; Gary, C.K.; Pantell, R.H.; Glinka, C.J. // Applied Physics Letters;7/19/2004, Vol. 85 Issue 3, p494 

    A simple microscope employing a compound refractive lens (CRL) composed of 100 biconcave lenses was used to image a biological sample with a 9.4× magnification using 10 Å cold neutrons. The microscope’s resolution, 0.5 mm, was primarily determined by the neutron detector 5.0 mm...

  • Non-destructive bulk analysis of the Buggenum sword by neutron resonance capture analysis and neutron diffraction. Postma, Hans; Amkreutz, Luc; Borella, Alessandro; Clarijs, Martijn; Kamermans, Hans; Kockelmann, Winfried; Paradowska, Anna; Schillebeeckx, Peter; Visser, Dirk // Journal of Radioanalytical & Nuclear Chemistry;Mar2010, Vol. 283 Issue 3, p641 

    Two neutron based techniques, neutron resonance capture analysis (NRCA) and time-of-flight neutron-diffraction (TOF-ND) have been used to determine the elemental composition and structure of a precious and very well preserved all-metal sword from the Bronze Age. This Buggenum sword was on loan...

  • In-vivo x-ray micro-imaging and micro-CT with the Medipix2 semiconductor detector at UniAndes. Caicedo, I.; Avila, C.; Gomez, B.; Bula, C.; Roa, C.; Sanabria, J. // AIP Conference Proceedings;2/29/2012, Vol. 1423 Issue 1, p383 

    This poster contains the procedure to obtain micro-CTs and to image moving samples using the Medipix2 detector, with its corresponding results. The high granularity of the detector makes it suitable for micro-CT. We used commercial software (Octopus) to do the 3D reconstruction of the samples in...

  • Quantum Theory Approach for Neutron Single and Double-Slit Diffraction. Xiang-Yao Wu; Bai-Jun Zhang; Zhong Hua; Xiao-Jing Liu; Yi-Heng Wu; Hou-Li Tang; Jing-Wu Li // International Journal of Theoretical Physics;Sep2010, Vol. 49 Issue 9, p2191 

    We provide a quantum approach description of neutron single and double-slit diffraction, with specific attention to the cold neutron diffraction ( λ≈20 Å) carried out by Zeilinger et al. (Rev. Mod. Phys. 60:1067, ). We find the theoretical results are good agreement with...

  • Prospects for further studies of effects of T-odd asymmetry in the emission of light particles in the polarized-neutron-induced ternary fission of heavy nuclei. Petrov, G. A.; Gagarskii, A. M.; Guseva, I. S.; Kopatch, Yu. N.; Gönnenwein, F.; Mutterer, M. // Physics of Atomic Nuclei;Jul2008, Vol. 71 Issue 7, p1149 

    Prospects for further studies of TRI and ROT effects of T-odd asymmetry in the emission of light particles in the ternary and binary fission of heavy nuclei that is induced by slow polarized neutrons are considered with a view to studying the mechanism for the formation of these effects and...

  • Neutron Diffraction at a Moving Grating as a Nonstationary Quantum Phenomenon. Frank, A. I.; Geltenbort, P.; Kulin, G. V.; Kustov, D. V.; Nosov, V. G.; Strepetov, A. N. // JETP Letters;5/10/2005, Vol. 81 Issue 9, p427 

    The observation of the discrete energy spectrum in a new experiment on the diffraction of ultracold neutrons at a moving phase grating is reported. The results are in quantitative agreement with theoretical predictions and can be treated as additional evidence of the validity of the plane-wave...

  • Investigation of the Neutron Shell Structure of the Even–Even Isotopes 40–56Ca within the Dispersive Optical Model. Bespalova, O. V.; Boboshin, I. N.; Varlamov, V. V.; Ermakova, T. A.; Ishkhanov, B. S.; Romanovsky, E. A.; Spasskaya, T. I.; Timokhina, T. P. // Physics of Atomic Nuclei;Feb2005, Vol. 68 Issue 2, p191 

    Within the method of matching experimental data obtained in the neutron-stripping and neutron-pickup reactions on 40,42,44,46,48Ca isotopes, the single-particle energies and probabilities that neutron states are filled are obtained for the even–even calcium isotopes. These data are...

  • IDENTIFICATION OF ISOMERIC STATES 'SOUTH' OF 208Pb VIA PROJECTILE FRAGMENTATION. Steer, S. J.; Podolyák, Zs.; Pietri, S.; Regan, P. H.; Rudolph, D.; Werner-Malento, E.; Garnsworthy, A. B.; Hoischen, R.; Górska, M.; Gerl, J.; Wollersheim, H. J.; Becker, F.; Bednarczyk, P.; Cáceres, L.; Doornenbal, P.; Geissel, H.; Grębosz, J.; Kelic, A.; Kurz, N.; Montes, F. // Acta Physica Polonica B;2007, Vol. 38 Issue 4, p1283 

    Relativistic fragmentation of 208Pb has been used to produce excited states in neutron-rich nuclei with N ≈ 126. Spectroscopic information for a range of nuclei has been obtained through observing delayed γ-ray emissions from isomeric states. Preliminary results for 203,204Pt nuclei are...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics