Synchrotron-based high-pressure research in materials science Page: 3 of 11
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April 17, 2004 14:21 Proceedings Trim Size: 9in x 6in
2
emission which is emitted from the proto-neutron star is an independent di-
agnostic of supernova explosion dynamics and early evolution of the proto-
neutron star. To accurately predict the ambient conditions just outside the
newly born neutron star for the first 10 - 20 s, we will need to understand
both the explosion mechanism and neutrino emission. In this talk I will
discuss micro-physical issues that directly affect the latter.
I begin by discussing the importance of the equation of state and neu-
trino transport in core collapse supernova in Sec. 2. Aspects of the equa-
tion of state and differences between predictions of mean field theories and
variational calculations are discussed in Sec. 3. In Sec. 4, I discuss the
micro-physics of neutrino opacity and its relation to linear response prop-
erties of dense matter. In Sec. 5, I conclude with a brief discussion of how
neutrinos affect r-process nucleosynthesis.
2. Early Evolution of the Proto-Neutron Star
Supernova Neutrinos - a (proto) neutron star is born
o km
Core collapse
tceo, -100 ms
o-si ~ B. E.~-2-3 X '-
3X10 m F 105 ergs Shock wave
~ \, . g~ok1051ergs
~. 1km
Hot d dense
Proto-neutron
\ Star: t-1-2 s
a 100 km
Figure 1. Schematic showing the various stages of a core-collapse supernova explosion.
The illustration in Fig. 1, shows the important stages of core-collapse su-
pernova and the birth of a proto-neutron stars. Successive nuclear burning
from lighter to heavier elements, which fuels stellar evolution, inevitably re-
sults in the formation of a iron core in massive stars (M > 8M0). Since ironreddy
.I
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Synchrotron-based high-pressure research in materials science, article, Date Unknown; [Los Alamos, New Mexico]. (https://digital.library.unt.edu/ark:/67531/metadc934314/m1/3/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.