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Roles of multi-step transfer in fusion process induced by heavy-ion reactions

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Abstract

In nucleus-nucleus collisions of the systems, {sup 12}C+{sup 13}C and {sup 13}C+{sup 16}O-{sup 12}C+{sup 17}O, the effects of the multi-step transfers and inelastic excitations on the fusion cross sections are investigated in the framework of the coupled-reaction-channel (CRC) method. Strong CRC effects of the multi-step processes are observed. Namely, the valence neutron in {sup 13}C or {sup 17}O plays an important role in the enhancement of the fusion. The potential barrier is effectively lowered with the formation of the covalent molecule of the configuration, {sup 12}C+n+{sup 12}C or {sup 12}C+n+{sup 16}O. In the analyses of the system {sup 12}C+{sup 13}C, however, it is still required to introduce core-core optical potential of lower barrier height in the state of the positive total parity. This could be due to the neck formation with the nucleons contained in two core nuclei. (author).
Authors:
Publication Date:
Jun 01, 1993
Product Type:
Conference
Report Number:
INS-982; CONF-9302157-
Reference Number:
SCA: 663450; 663520; PA: JPN-93:011096; EDB-94:016147; ERA-19:005755; NTS-94:014115; SN: 93001119312
Resource Relation:
Conference: RIKEN international workshop on heavy-ion reactions with neutron-rich beams,Wako (Japan),18-20 Feb 1993; Other Information: PBD: Jun 1993
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; HEAVY ION REACTIONS; HEAVY ION FUSION REACTIONS; MULTIPLE SCATTERING; CROSS SECTIONS; EXCITATION; NUCLEAR STRUCTURE; NUCLEAR MODELS; NEUTRONS; CARBON 12 TARGET; CARBON 13 REACTIONS; CARBON 13 TARGET; OXYGEN 16 REACTIONS; OXYGEN 17 REACTIONS; 663450; 663520; HEAVY-ION-INDUCED REACTIONS AND SCATTERING; A = 6-19
OSTI ID:
10110047
Research Organizations:
Tokyo Univ., Tanashi (Japan). Inst. for Nuclear Study
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE94727509; TRN: JP9311096
Availability:
OSTI; NTIS; INIS
Submitting Site:
JPN
Size:
20 p.
Announcement Date:
Jun 30, 2005

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Citation Formats

Imanishi, B, and Oertzen, W von. Roles of multi-step transfer in fusion process induced by heavy-ion reactions. Japan: N. p., 1993. Web.
Imanishi, B, & Oertzen, W von. Roles of multi-step transfer in fusion process induced by heavy-ion reactions. Japan.
Imanishi, B, and Oertzen, W von. 1993. "Roles of multi-step transfer in fusion process induced by heavy-ion reactions." Japan.
@misc{etde_10110047,
title = {Roles of multi-step transfer in fusion process induced by heavy-ion reactions}
 author = {Imanishi, B, and Oertzen, W von}
 abstractNote = {In nucleus-nucleus collisions of the systems, {sup 12}C+{sup 13}C and {sup 13}C+{sup 16}O-{sup 12}C+{sup 17}O, the effects of the multi-step transfers and inelastic excitations on the fusion cross sections are investigated in the framework of the coupled-reaction-channel (CRC) method. Strong CRC effects of the multi-step processes are observed. Namely, the valence neutron in {sup 13}C or {sup 17}O plays an important role in the enhancement of the fusion. The potential barrier is effectively lowered with the formation of the covalent molecule of the configuration, {sup 12}C+n+{sup 12}C or {sup 12}C+n+{sup 16}O. In the analyses of the system {sup 12}C+{sup 13}C, however, it is still required to introduce core-core optical potential of lower barrier height in the state of the positive total parity. This could be due to the neck formation with the nucleons contained in two core nuclei. (author).}
 place = {Japan}
 year = {1993}
 month = {Jun}
 }