| Autor: |
Lehe´rissier, P., Barue´, C., Canet, C., Dupuis, M., Flambard, J. L., Gaubert, G., Gibouin, S., Huguet, Y., Jaffres, P. A., Jardin, P., Lecesne, N., Lemagnen, F., Leroy, R., Pacquet, J. Y., Pellemoine-Landre´, F., Rataud, J. P. |
| Předmět: |
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| Zdroj: |
Review of Scientific Instruments; Feb2002, Vol. 73 Issue 2, p558, 3p |
| Abstrakt: |
In recent years, progress concerning the production of high intensity of metallic ion beams ([sup 58]Ni, [sup 48]Ca, [sup 76]Ge) at GANIL have been performed. The metallic ion from volatile compound method has been successfully used to produce a high intensity nickel beam with the ECR4 ion source: 20 eµA of [sup 58]Ni[sup 11+] at 24 kV extraction voltage. This beam has been maintained for 8 days and accelerated up to 74.5 MeV/u by our cyclotrons with a mean intensity of 0.13 pµA on target. This high intensity, required for experiment, led to the discovery of the doubly magic [sup 48]Ni isotope. The oven method has been first tested with natural metallic calcium on the ECR4 ion source, then used to produce a high power beam (740 W on target, i.e., 0.13 pµA accelerated up to 60 meV/u) of [sup 48]Ca still keeping a low consumption (0.09 mg/h). A germanium beam is now under development, using the oven method with germanium oxide. The ionization efficiencies have been measured and compared. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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