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Oscillations in the fusion of the Si + Si systems; Oscilaciones en la fusion de sistemas de Si + Si

Abstract

Excitation functions for the yields of all the residual nuclei from the {sup 28} Si + {sup 28,30} and {sup 30} Si + {sup 30} Si reactions have been measured via the {gamma}-ray technique for center of mass energies in the region within one and two times the Coulomb barrier.Thirteen elements were identified for the first reaction and ten for the other two. While no structure is shown by the data for the {sup 28} + {sup 28} Si reaction, we have found evidence for intermediate width structure in the 2{alpha} and the {alpha}pn channels in {sup 28} Si + {sup 30} Si and for broad structure in the total fusion cross sections for {sup 30} Si + {sup 30} Si. Calculations using a barrier penetration model with one free parameter reproduce the experimental results quite well. Evaporation model calculations indicate that the individual structure of the nuclei involved in the respective decay chains might have an important influence upon the deexcitation process at the energies relevant to our experiments. (Author)
Authors:
Aguilera R, E F; Kolata, J J; DeYoung, P A; Vega, J J [1] 
  1. ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)
Publication Date:
Feb 15, 1986
Product Type:
Technical Report
Report Number:
ACEL-8603; INIS-MX-RI-1383
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COBALT 57; COULOMB FIELD; CROSS SECTIONS; EXCITATION FUNCTIONS; EXPERIMENTAL DATA; GAMMA RADIATION; HEAVY ION FUSION REACTIONS; ION BEAMS; OSCILLATIONS; SILICON 28; SILICON 30
OSTI ID:
20871631
Research Organizations:
Instituto Nacional de Investigaciones Nucleares, Ocoyoacac (Mexico)
Country of Origin:
Mexico
Language:
Spanish
Other Identifying Numbers:
TRN: MX0700081039452
Availability:
Available from INIS in electronic form
Submitting Site:
MXN
Size:
25 pages
Announcement Date:
Jun 11, 2007

Citation Formats

Aguilera R, E F, Kolata, J J, DeYoung, P A, and Vega, J J. Oscillations in the fusion of the Si + Si systems; Oscilaciones en la fusion de sistemas de Si + Si. Mexico: N. p., 1986. Web.
Aguilera R, E F, Kolata, J J, DeYoung, P A, & Vega, J J. Oscillations in the fusion of the Si + Si systems; Oscilaciones en la fusion de sistemas de Si + Si. Mexico.
Aguilera R, E F, Kolata, J J, DeYoung, P A, and Vega, J J. 1986. "Oscillations in the fusion of the Si + Si systems; Oscilaciones en la fusion de sistemas de Si + Si." Mexico.
@misc{etde_20871631,
title = {Oscillations in the fusion of the Si + Si systems; Oscilaciones en la fusion de sistemas de Si + Si}
author = {Aguilera R, E F, Kolata, J J, DeYoung, P A, and Vega, J J}
abstractNote = {Excitation functions for the yields of all the residual nuclei from the {sup 28} Si + {sup 28,30} and {sup 30} Si + {sup 30} Si reactions have been measured via the {gamma}-ray technique for center of mass energies in the region within one and two times the Coulomb barrier.Thirteen elements were identified for the first reaction and ten for the other two. While no structure is shown by the data for the {sup 28} + {sup 28} Si reaction, we have found evidence for intermediate width structure in the 2{alpha} and the {alpha}pn channels in {sup 28} Si + {sup 30} Si and for broad structure in the total fusion cross sections for {sup 30} Si + {sup 30} Si. Calculations using a barrier penetration model with one free parameter reproduce the experimental results quite well. Evaporation model calculations indicate that the individual structure of the nuclei involved in the respective decay chains might have an important influence upon the deexcitation process at the energies relevant to our experiments. (Author)}
place = {Mexico}
year = {1986}
month = {Feb}
}