NEW ASPECTS OF NUCLEAR LEVEL SPACING DISTRIBUTIONS
Neutron resonances of the 4n target nuclei "28"Si, "32"S, "40"Ca, "52"Cr and "96"Zr are studied. According to the independent particle model the excited states of these nuclei are created in one or maximum two collisions and are the best candidates for studying the properties and resonances originating from the same doorway state result in a Gaussian-like nearest level spacing distribution. The strong energy correlation between resonances is assigned to the nucleon-nucleon interaction and contradicts the independent particle picture. The almost equally spaced doorway states are important, since they fulfil in place of equidistant single particle states the rather simple assumption of the Bethe level density formula. Furthermore, they explain the steps in the level density systematics, which is a pre-assumption for the prediction of level spacings for nuclei which are not measurable.
Bibliographic Reference: INTERNATIONAL CONFERENCE ON NUCLEAR DATA FOR SCIENCE AND TECHNOLOGY, MITO (JAPAN), MAY, 30-JUNE, 3, 1988, AVAILABILITY: CEC-LUXEMBOURG, DG-XIII-C-3, POB 1907, MENTIONING PAPER EN 34012
Availability: Can be ordered online
Record Number: 1989126108100 / Last updated on: 1989-06-01
Available languages: en