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Schematic large-dimension coupled-channel study of strong inelastic excitations to high-lying states in colliding nuclei

Abstract

A mechanism of the strong inelastic excitation of colliding nuclei (e.g. deep inelastic heavy-ion collision) was studied in a schematic way based on a coupled channel (CC) framework. The purpose of this work is to see the gross behavior of the inelastic excitation strength versus epsilon (i.e. energy spectrum) for the assumed specific types of CC potentials between a large number of inelastic channels. Schematic large dimension CC calculation was considered rather than small-dimension CC calculation. The coupled N + 1 equations can be reduced to uncoupled N + 1 equations through the wellknown unitary transformation. An interesting case is that there exists strong channel independent coupling between any pair of the channels, all of which are almost degenerate in internal energy as compared with incoming c.m. energy. It was found that inelastic scattering hardly occurred while the collision was almost confined to the elastic component. The numerical calculation of S-matrix was carried out. Other cases, such as zero CC potential, the coupling between inelastic channel and entrance channel, and the case that the thickness of the coupling was changed, were investigated. As the results of the present study, it can be said that this CC coupling model may be  More>>
Authors:
Kamimura, M.; [1]  Nakano, M.; Yahiro, M.; Ikegami, H.; Muraoka, M. [2] 
  1. Rijksuniversiteit Groningen (Netherlands). Kernfysisch Versneller Inst.
  2. eds.
Publication Date:
Jan 01, 1980
Product Type:
Conference
Report Number:
CONF-800540-
Reference Number:
AIX-13-688376; EDB-82-153550
Resource Relation:
Conference: International symposium on highly excited states in nuclear reactions, Osaka, Japan, 12 May 1980; Related Information: In: Proceedings of 1980 RCNP international symposium on highly excited states in nuclear reactions.
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; DEEP INELASTIC HEAVY ION REACTIONS; COUPLED CHANNEL THEORY; BREAKUP REACTIONS; COLLECTIVE MODEL; ENERGY SPECTRA; EXCITATION; NUCLEAR POTENTIAL; S MATRIX; CHARGED-PARTICLE REACTIONS; ENERGY-LEVEL TRANSITIONS; HEAVY ION REACTIONS; MATHEMATICAL MODELS; MATRICES; NUCLEAR MODELS; NUCLEAR REACTIONS; POTENTIALS; SPECTRA; 653003* - Nuclear Theory- Nuclear Reactions & Scattering
OSTI ID:
8437904
Country of Origin:
Japan
Language:
English
Submitting Site:
INIS
Size:
Pages: 75-81
Announcement Date:
Aug 01, 1982

Citation Formats

Kamimura, M., Nakano, M., Yahiro, M., Ikegami, H., and Muraoka, M. Schematic large-dimension coupled-channel study of strong inelastic excitations to high-lying states in colliding nuclei. Japan: N. p., 1980. Web.
Kamimura, M., Nakano, M., Yahiro, M., Ikegami, H., & Muraoka, M. Schematic large-dimension coupled-channel study of strong inelastic excitations to high-lying states in colliding nuclei. Japan.
Kamimura, M., Nakano, M., Yahiro, M., Ikegami, H., and Muraoka, M. 1980. "Schematic large-dimension coupled-channel study of strong inelastic excitations to high-lying states in colliding nuclei." Japan.
@misc{etde_8437904,
title = {Schematic large-dimension coupled-channel study of strong inelastic excitations to high-lying states in colliding nuclei}
author = {Kamimura, M., Nakano, M., Yahiro, M., Ikegami, H., and Muraoka, M.}
abstractNote = {A mechanism of the strong inelastic excitation of colliding nuclei (e.g. deep inelastic heavy-ion collision) was studied in a schematic way based on a coupled channel (CC) framework. The purpose of this work is to see the gross behavior of the inelastic excitation strength versus epsilon (i.e. energy spectrum) for the assumed specific types of CC potentials between a large number of inelastic channels. Schematic large dimension CC calculation was considered rather than small-dimension CC calculation. The coupled N + 1 equations can be reduced to uncoupled N + 1 equations through the wellknown unitary transformation. An interesting case is that there exists strong channel independent coupling between any pair of the channels, all of which are almost degenerate in internal energy as compared with incoming c.m. energy. It was found that inelastic scattering hardly occurred while the collision was almost confined to the elastic component. The numerical calculation of S-matrix was carried out. Other cases, such as zero CC potential, the coupling between inelastic channel and entrance channel, and the case that the thickness of the coupling was changed, were investigated. As the results of the present study, it can be said that this CC coupling model may be useful for discussing continuum-continuum interactions in a breakup reaction by simulating the continuum states with many channels made discrete.}
place = {Japan}
year = {1980}
month = {Jan}
}