dorsal/arxiv
View SchemaShort timescale behavior of colliding heavy nuclei at intermediate energies
| Authors | S. Hudan, R. T. deSouza, A. Ono |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0509074 |
| URL | https://arxiv.org/abs/nucl-th/0509074 |
| DOI | 10.1103/PhysRevC.73.054602 |
| Journal | Phys.Rev. C73 (2006) 054602 |
Abstract
An Antisymmetrized Molecular Dynamics model is used to explore the collision of $^{114}$Cd projectiles with $^{92}$Mo target nuclei at E/A=50 MeV over a broad range in impact parameter. The atomic number (Z), velocity, and emission pattern of the reaction products are examined as a function of the impact parameter and the cluster recognition time. The non-central collisions are found to be essentially binary in character resulting in the formation of an excited projectile-like fragment (PLF$^*$) and target-like fragment (TLF$^*$). The decay of these fragments occurs on a short timescale, 100$\le$t$\le$300 fm/c. The average excitation energy deduced for the PLF$^*$ and TLF$^*$ `saturates for mid-central collisions, 3.5$\le$b$\le$6 fm, with its magnitude depending on the cluster recognition time. For short cluster recognition times (t=150 fm/c), an average excitation energy as high as $\approx$6 MeV is predicted. Short timescale emission leads to a loss of initial correlations and results in features such as an anisotropic emission pattern of both IMFs and alpha particles emitted from the PLF$^*$ and TLF$^*$ in peripheral collisions.
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"abstract": "An Antisymmetrized Molecular Dynamics model is used to explore the collision\nof $^{114}$Cd projectiles with $^{92}$Mo target nuclei at E/A=50 MeV over a\nbroad range in impact parameter. The atomic number (Z), velocity, and emission\npattern of the reaction products are examined as a function of the impact\nparameter and the cluster recognition time. The non-central collisions are\nfound to be essentially binary in character resulting in the formation of an\nexcited projectile-like fragment (PLF$^*$) and target-like fragment (TLF$^*$).\nThe decay of these fragments occurs on a short timescale, 100$\\le$t$\\le$300\nfm/c. The average excitation energy deduced for the PLF$^*$ and TLF$^*$\n`saturates for mid-central collisions, 3.5$\\le$b$\\le$6 fm, with its magnitude\ndepending on the cluster recognition time. For short cluster recognition times\n(t=150 fm/c), an average excitation energy as high as $\\approx$6 MeV is\npredicted. Short timescale emission leads to a loss of initial correlations and\nresults in features such as an anisotropic emission pattern of both IMFs and\nalpha particles emitted from the PLF$^*$ and TLF$^*$ in peripheral collisions.",
"arxiv_id": "nucl-th/0509074",
"authors": [
"S. Hudan",
"R. T. deSouza",
"A. Ono"
],
"categories": [
"nucl-th",
"nucl-ex"
],
"doi": "10.1103/PhysRevC.73.054602",
"journal_ref": "Phys.Rev. C73 (2006) 054602",
"title": "Short timescale behavior of colliding heavy nuclei at intermediate energies",
"url": "https://arxiv.org/abs/nucl-th/0509074"
},
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