Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hypervelocity Impact Fusion with Compressed Deuterium-Tritium Targets   The neutron yields observed in inertial confinement fusion experiments for
higher convergence ratios are about two orders of magnitude smaller than the
neutron yields predicted by one-dimensional models, the discrepancy being
attributed to the development of instabilities. We consider the possibility
that ignition and a moderate gain could be achieved with existing laser
facilities if the laser driver energy is used to produce only the radial
compression of the fuel capsule to high densities but relatively low
temperatures, while the ignition of the fusion reactions in the compressed fuel
capsule will be effected by a synchronized hypervelocity impact. A
positively-charged incident projectile can be accelerated to velocities of 3.5
x 10^6 m/s, resulting in ignition temperatures of about 4 keV, by a
conventional low-beta linac having a length of 13 km if deuterium-tritium
densities of 570 g/cm^3 could be obtained by laser-driven compression.

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The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
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The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: astro-ph
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The categories of this paper are: econ
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The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: funct-an