M. Aïche

TL;DR: The observation that high-spin states up to {ital I}=31{sup {minus}} have been studied in the Ra nucleus and the staggering sequence of levels of positive and negative parity persists up to highest level supports the idea that in some nuclei the high- spin excitations may primarily be dominated by deformations which do not conserve the intrinsic parity.

TL;DR: In this article, it was shown that nuclei exhibit a constant-temperature level density behavior for all mass regions and at least up to the neutron threshold, and that the abundance of nuclear level densities measured with the Oslo method favors the constant temperature level density over the Fermi-gas picture.

TL;DR: In this paper, the lightest nuclei in the actinide region 217Fr and 217Ra were found to have a static intrinsic reflection asymmetric shape and exhibited at medium angular momenta alternating positive and negative parity levels strongly coupled by E1 transitions.

TL;DR: In this article, the high-spin states of doubly odd 218 Ac1 129 have been investigated using in-beam α, γ and conversion electron spectroscopy techniques through the 209 Bi( 12(13) C, 3(4)n)n fusion-evaporation reactions.