Markus Kiderlen

Amorphous track models: a numerical comparison study

Research output: Contribution to conferencePosterResearch

  • Steffen Greilich, Division of Medical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany, Germany
  • Leszek Grzanka, Institute of Nuclear Physics, Polish Academy of Science, Kraków, Poland, Poland
  • Ute Hahn
  • Markus Kiderlen
  • Niels Bassler
  • Claus E. Andersen, Technical University of Denmark, Denmark
  • Oliver Jäkel, Division of Medical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany, Germany
Amorphous track models such as Katz' Ion-Gamma-Kill (IGK) approach [1, 2] or the Local Effect Model (LEM) [3, 4] had reasonable success in predicting the response of solid state dosimeters and radiobiological systems. LEM is currently applied in radiotherapy for biological dose optimization in carbon ion treatment at the particle facility HIT in Heidelberg. Apparent differences between the LEM and the Katz model are the way how interactions of individual particle tracks and how extended targets are handled. Complex scenarios, however, can mask the actual effect of these differences. Here, we present a numerical study where we directly compare the outcome from both formalisms for simple test-cases. In addition we present a third approach based on an approximation method for compound Poisson distributions [5] which allows for very fast computations even in the case of many particles but under the (questionable?) assumption of statistical independence of subtargets in the extended target.


References
[1] KATZ, R., Radiation Research 160, 724-728, 2003.
[2] EDMUND, J.M. et al, NIMB 262, 261-275, 2008.
[3] SCHOLZ, M., KRAFT, G., Radiation Research 161, 612-620, 2004.
[4] GEISS, O.B. et al., NIMB 142, 592-598, 1998.
[5] KELLERER, A.M., in: Kase, K.R., Bjärngard, B.E., Attix, F.H. (eds.), The Dosimetry of Ionizing Radiation, Vol. 1, Academic Press, London, 416 pp.
Original languageEnglish
Publication year2009
Publication statusPublished - 2009
EventNeutron and Ion Dosimetry Symposium (NEUDOS-11) - Cape Town, South Africa
Duration: 12 Oct 200916 Oct 2009
Conference number: 11

Conference

ConferenceNeutron and Ion Dosimetry Symposium (NEUDOS-11)
Number11
CountrySouth Africa
CityCape Town
Period12/10/200916/10/2009

    Research areas

  • track structure theory

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