Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A non-equilibrium microscopic description of spallation   We investigate the prompt emission of few intermediate-mass fragments in
spallation reactions induced by protons and deuterons in the 1 GeV range. Such
emission has a minor contribution to the total reaction cross section, but it
may overcome evaporation and fission channels in the formation of light
nuclides. The role of mean-field dynamics and phase-space fluctuations in these
reactions is investigated through the Boltzmann-Langevin transport equation. We
found that a process of frustrated fragmentation and re-aggregation is a
prominent mechanism of production of IMFs which can not be assimilated to the
statistical decay of a compound nucleus. Very interestingly, this process may
yield a small number of IMF in the exit channel, which may even reduce to two,
and be wrongly confused with ordinary asymmetric fission. This interpretation,
inspired by nuclear-spallation experiments, can be generalised to heavy-ion
collisions approaching the fragmentation threshold.

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The categories of this paper are: physics
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The categories of this paper are: mtrl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ph
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The categories of this paper are: math
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: quant-ph
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga
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The categories of this paper are: econ
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The categories of this paper are: astro-ph
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The categories of this paper are: bayes-an