N=50core excited states studied in the4696Pd50nucleus

Abstract

N=50 Core Excited States Studied in the 96Pd NucleusGeneral rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal PHYSICAL REVIEW C 86, 014318 (2012) 96 Pd are very well reproduced in large-scale shell model (LSSM) calculations in which excitations are allowed of up to five g 9/2 protons and neutrons across the N = Z = 50 gap, to the g 7/2 , d 5/2 , d 3/2 , and s 1/2 orbitals. The odd-parity isomer can be only qualitatively interpreted though, employing calculation in the full fpg shell model space, with just one particle-hole core excitation.

Character of particle-hole excitations in94Ru deduced fromγ-ray angular correlation and linear polarization measurements

“…Such strongly hindered E1 transitions related to core excitations were proposed for 96 Pd and 97 Ag [18,19]. E1 transitions are strictly forbidden considering only the model space spanning the orbitals 0g 9/2 , 1p 1/2 , 0g 7/2 , and 1d 5/2 .…”

“…The agreement between calculated and experimental level energies for these states is typically quite good while, for states above 6 MeV excitation energy, the precision of the theoretical predictions is significantly reduced. Several calculations using different shell-model configuration spaces have been performed [17,18,30,32,33] in order to interpret the structure of high-lying states above I 13. The calculation presented in Ref.…”

“…The model space we choose here is similar to the so-called fpgndg model space in Ref. [18]. There up to five particle-hole excitations across the Z = N = 50 shell closure is included in the LSSM calculation within the model space 0g 9/2 ,0g 7/2 ,1d 5/2 ,1d 3/2 ,1s 1/2 .…”

Properties of γ -decaying isomers in the Sn100 region populated in fragmentation of a Xe124Häfner1, Moschner2, Blazhev3 et al. 2019Phys. Rev. CSelf Cite11010View full textAdd to dashboardCite

“…Core excitations across the N = 50 closed shell are manifested in excited states of nuclei close to 100 Sn which can be identified by the existence of excited states beyond the restricted model space. In fusion-evaporation studies, core-excited states in 96 Pd [9,10], 97 Ag [11], and 99 Cd [12] were observed. Recently, isomers involving an excitation across the N = 50 shell closure were found in 96 Ag [13] and 98 Cd [14,15].…”

Spectroscopy of the neutron-deficientN=50nucleusRh95

“…One question of particular importance is the role played by excitations crossing the N = Z = 50 shell closure. Core-excited states have been observed in semimagic nuclei including 93 Tc, 94 Ru, 95 Rh, 96 Pd, 97 Ag, and 98 Cd [2][3][4][5]. Moreover, neutron-proton (np) correlations can be expected to play an increasing role, as the valence nucleons occupy identical orbits.…”