Study of the nuclear matter distribution through $alpha$ particle scattering by cadmium, tin, tellurium, samarium, and lead isotopes near the Coulomb barrier (in French)
The aim of this study was to establish the existence of an $alpha$- nucleus interaction radius in the elastic scattering of $alpha$ particles at energies near to the Coulomb barrier, and to obtain informations on matter distribution inside the nucleus. Measurements were carried out on the following twenty three nuclei: cadmium 110, 112, 114, 116, tin 112, 114, 116, 118, 120, 122, 124, tellurium 122, 124, 126, 128, 130, samarium 144, 148, 150, 152, and lead 204, 206 and 208. It was effectively possible to determine an $alpha$- nucleus interaction radius, corresponding to a well defined nuclear potential, and whose slope as a function of Asup(1/3) is of the order of 1,36fm. It was also possible to connect this nuclear potential to matter distribution and to determine inside this distribution a point where the nuclear density has a definitive value. A confirmation is given that neutrons in excess are preferentially distributed at the surface of nuclei and, a consequence, make this surface more diffuse. (FR)
- Research Organization:
- Paris-11 Univ., 91 - Orsay (France)
- NSA Number:
- NSA-33-013590
- OSTI ID:
- 4134711
- Report Number(s):
- FRNC-TH--524
- Country of Publication:
- France
- Language:
- French
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Related Subjects
*CADMIUM ISOTOPES-- NUCLEAR STRUCTURE
*LEAD ISOTOPES-- NUCLEAR STRUCTURE
*SAMARIUM ISOTOPES-- NUCLEAR STRUCTURE
*TELLURIUM ISOTOPES-- NUCLEAR STRUCTURE
*TIN ISOTOPES-- NUCLEAR STRUCTURE
642803*
CROSS SECTIONS
MEV RANGE 01-10
MEV RANGE 10-100
N68731* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
90 <= A <= 149--Energy Levels & Transitions
N68751 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
90 <= A <= 149--Nuclear Reactions & Scattering
N68831 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
150 <= A <= 189--Energy Levels & Transitions
N68851 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
150 <= A <= 189--Nuclear Reactions & Scattering
N68931 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
190 <= A <= 219--Energy Levels & Transitions
N68952 --Physics (Nuclear
Theoretical)--Nuclear Properties & Reactions
190 <= A <= 219--Nuclear Reactions & Scattering
NUCLEAR RADII
TARGETS