Electromagnetic dissociation of Au and Co targets by relativistic heavy ions
This investigation is a part of ongoing series of experiments designed to extend the systematics of ED for various targets and projectiles. The goal of these experiments is to determine {sigma}{sub ED} for various combinations of projectile, projectile energy, and target. These cross sections are than compared to the theoretical predictions of a model based on the Weizsacker-Williams (WW) method. Determination of {sigma}{sub ED} entails first finding the total crossing section ({sigma}{sub tot}) for the reaction T(RHI,X)T{prime}, where T is the target RHI is the projectile, X is the remnant of the RHI after the reaction (the details of which are not studied in this series of experiments), and T{prime} is the new state of the target (the target minus one neutron for the one-neutron removal reaction). Since {sigma}{sub tot} consists of contributions due to both ED and nuclear processes, {sigma}{sub nuc} must also be found for this reaction. Once {sigma}{sub tot} and {sigma}{sub nuc} are determined, {sigma}{sub ED} is given by {sigma}{sub ED} = {sigma}{sub tot} - {sigma}{sub nuc}. In this investigation, {sup 197}Au and {sup 59}Co targets were irradiated by a beam of {sup 238}U ions with an energy of 0.96 GeV per nucleon (0.96 GeV/A). The particular reactions of interest are {sup 197}Au({sup 238}U,X){sup 196}Au and {sup 59}Co({sup 238}U,X){sup 58}Co. The cross sections for these reactions were found by studying the {gamma}-ray activity of {sup 196}Au and {sup 58}Co in the targets. The experimental value of {sigma}{sub ED} was compared to the value calculated using the WW method. Results of previous experiments are shown along with the results of the present study so that the systematics of ED can be studied. 25 refs., 26 figs.
- Research Organization:
- Ames Lab., IA (USA)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 5653943
- Report Number(s):
- IS-T-1500; ON: DE91014915
- Resource Relation:
- Other Information: Thesis (M.S.)
- Country of Publication:
- United States
- Language:
- English
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