Numerical treatment of a time dependent inverse problem in photon transport
Pieraccini, S. ; Riganti, R. ; Belleni-Morante, A.
Bollettino dell'Unione Matematica Italiana, Tome 8-A (2005), p. 773-779 / Harvested from Biblioteca Digitale Italiana di Matematica

The time-dependent intensity of a UV-photon source, located inside an interstellar cloud, is determined by formulating and solving an inverse problem for the integro-differential transport equation of photons in a one-dimensional slab. Starting from a discretizazion of the forward problem, an iterative procedure is used to compute the values of the source intensity at increasing values of the time.

Si studia un problema inverso unidimensionale per un'equazione integro-differenziale del trasporto di fotoni, e si determinano le proprietà di una sorgente di fotoni ultravioletti immersa in una nube interstellare. Un procedimento iterativo che si basa sulla discretizzazione spazio-temporale del problema diretto, porta alla determinazione della intensità della sorgente e delle sue variazioni al crescere del tempo.

Publié le : 2005-10-01
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     author = {S. Pieraccini and R. Riganti and A. Belleni-Morante},
     title = {Numerical treatment of a time dependent inverse problem in photon transport},
     journal = {Bollettino dell'Unione Matematica Italiana},
     volume = {8-A},
     year = {2005},
     pages = {773-779},
     zbl = {1150.65034},
     mrnumber = {2182429},
     language = {en},
     url = {http://dml.mathdoc.fr/item/BUMI_2005_8_8B_3_773_0}
}
Pieraccini, S.; Riganti, R.; Belleni-Morante, A. Numerical treatment of a time dependent inverse problem in photon transport. Bollettino dell'Unione Matematica Italiana, Tome 8-A (2005) pp. 773-779. http://gdmltest.u-ga.fr/item/BUMI_2005_8_8B_3_773_0/

[1] Anikonov, E. - Bubnov, B. A., Inverse problems of transport theory, Sov. Math. Dokl., 37 (1988), 497-500. | MR 947226 | Zbl 0699.35251

[2] Belleni-Morante, A., A time dependent inverse problem in photon transport, in: New Trends in Mathematical Physics, World Scientific, Singapore (2004), 1-11. | MR 2163962 | Zbl 1109.82022

[3] Belleni-Morante, A. - Monaco, R. - Riganti, R. - Salvarani, F., A numerical approach to inverse problems in photon transport inside an interstellar cloud, Appl. Math. Comput., 154 (2004), 115-126. | MR 2066184 | Zbl 1063.65152

[4] Belleni-Morante, A. - Monaco, R. - Salvarani, F., Approximated solutions of photon transport in a time-dependent region, Transp. Theory Stat. Phys., 30 (2001), 421-438. | Zbl 1086.45503

[5] Dyson, J. E. - Williams, D. A., The physics of interstellar medium, Inst. of Phys. Publ. (Bristol, 1997). | Zbl 1090.85500

[6] Gryn', V. I. - Nitishinskay, L. V., Inverse three-dimensional problems of the simultaneous determination of the absorption coefficient and the source function for the transport equation, Comput. Math. Math. Phys., 32 (1992), 81-95. | MR 1164462 | Zbl 0788.45009

[7] Pomraning, G. C., Radiation Hydrodynamics, Prentice Hall Series in Computational Mathematics, Pergamon Press, Oxford, 1973.

[8] Sharafutdinov, V. A., The inverse problem of determining a source in a stationary transport equation, Dokl. Math., 53 (1996), 251-253. | Zbl 0892.58088

[9] Shu, C.-W., Essentially Non-oscillatory and Weighted Essentially Non-oscillatory Schemes for Hyperbolic Conservation Laws, in Advanced numerical approximation of nonlinear hyperbolic equations, Lecture Notes in Mathematics1697, Springer, 2000. | MR 1728856 | Zbl 0927.65111

[10] Stefanov, P., Inverse problems in transport theory, in: InsideOut: Inverse Problems and Applications (G.Uhlmann, Ed.), MSRI Publications, vol. 47, Cambridge Univ. Press, Cambridge (2003), 111-131. | MR 2029679 | Zbl 1083.45008