Nuclear Fragmentation (II): Ablative Evaporation for Abrasion-Ablation Model

ORAL

Abstract

One of the many potentially limiting factors for extraterrestrial operations involving manned missions is the dose received by crew in the harsh space radiation environment. In order to sufficiently understand the radiation dose delivered to astronauts behind shielding, the radiation transport codes used to calculate these doses require accurate nuclear fragmentation cross sections. The fragmentation process can be divided in to two steps: a fast step (abrasion), and a slower evaporation step (ablation). This talk will focus on the ablation cross section, which is calculated by a Monte Carlo process via the updated evaporation code EVA based on Dostrovsky et. al. Phys. Rev. 116, 683 (1959). The code has been updated and completely modernized. Efforts are under way for potential improvements to the model and preliminary results will be presented.

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Authors

  • Wouter DeWet

    University of Tennessee, Knoxville, University of Tennessee

  • Richard Longland

    University of Tennessee, Knoxville, University of Alabama at Birmingham, Rutgers, The State University of New Jersey, Florida Intl Univ, Christopher Newport University, Jefferson Laboratory, University of North Georgia, Dahlonega GA 30597, Oak Ridge National Laboratory, Oak Ridge, TN 37831, Austin Peay State University department of physics and astronomy, Laboratoire des Verres et et Ceramiques, Institute des Sciences chimiques de Rennes, Austin Peay State University Department of Physics and Astronomy, Université de Rennes, Lehigh University, Austin Peay State University, University of Alabama, Oak Ridge National Laboratory, Auburn University, Auburn, AL, Purdue University, West Lafayette, IN, Queen's University Belfast, Belfast, United Kingdom, Harvard Smithsonian Center for Astrophysics, Boston, MA, Francis Marion University, Auburn University, Lawrence Berkeley National Laboratory, University of California, Davis, University of Alabama Huntsville, Oak Ridge National Lab, Univ of Tennessee, Knoxville, Oak Ridge National Lab, Univ of Tennessee, Knoxville, ITEP, Moscow, Baylor University, Saint Louis University, Louisiana State Univ - Baton Rouge, University of Chicago, Oak Ridge National Laboratory , Oak Ridge TN 37831, American Superconductor Corp., Westborough, MA 01581, USA, Tsinghua University, LBNL, Vanderbilt University, Laboratoire Aime Cotton, CNRS/Universite Paris-Sud/ENS-Cachan, Orsay France, Drake University, Des Moines, IA, University of Central Florida, University of South Alabama, North Carolina Central University

  • Lawrence Townsend

    University of Tennessee, Knoxville, University of Tennessee

  • Charles Werneth

    NASA Langley, NASA Langley Research Center

  • Khin Maung

    University of Southern Mississippi, U. of Southern Mississippi