Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entrance Channel Effects on the Quasifission Reaction Channel in Cr + W
  Systems   Background: Formation of a fully equilibrated compound nucleus is a critical
step in the heavy-ion fusion reaction mechanism but can be hindered by orders
of magnitude by quasifission, a process in which the dinuclear system breaks
apart prior to full equilibration. To provide a complete description of
heavy-ion fusion it is important to characterize the quasifission process. In
particular, the impact of changing the neutron-richness of the quasifission
process is not well known. A previous study of Cr + W reactions at a constant
13 % above the Coulomb barrier concluded that an increase in neutron-richness
leads to a decrease in the prominence of the quasifission reaction channel.
Purpose: The interplay between the fusion-fission and quasifission reaction
channels, with varying neutron-richness, was explored at a constant excitation
energy, closer to the interaction barrier than the previous work, to see if the
correlation between neutron-richness and quasifission is valid at lower
energies. Methods: Mass distributions were determined for eight different
combinations of Cr + W reactions at the Australian National University at 52.0
MeV of excitation energy in the compound nucleus. Results: A curvature
parameter was determined for the fission-like fragment mass distributions and
compared to various reaction parameters known to influence quasifission.
Conclusions: The present work demonstrates that at energies near the
interaction barrier the deformation effects dominate over the neutron-richness
effects in the competition between quasifission and compound nucleus formation
in these Cr + W systems and is an important consideration for future with heavy
and superheavy element production reactions.

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The categories of this paper are: math-ph
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
3
The categories of this paper are: physics
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The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
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The categories of this paper are: econ
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
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The categories of this paper are: ao-sci
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The categories of this paper are: funct-an