Classification of Nuclear Isomers

Nuclei at High Angular Momentum

“…were the first high-spin states and also some of the early direct evidence in support of the shell model (Goldhaber and Sunyar 1951).…”

“…Radioactive decay was the first. Early evidence for shell~model isomers came mostly from s~decay studies (Goldhaber and Sunyar 1951), and a-decay provided systematic evidence (Khoo al 1978) and an average~ with hard work~ might be 30h. Other experimenters have developed techniques to extract information from unresolved spectra.…”

β-decay studies of the transitional nucleusCu75and the structure ofIlyushkin1, Winger2, Rykaczewski3 et al. 2011Phys. Rev. C16070View full textAdd to dashboardCite

“…(5/2 -) 345.07 (7) (5/2 -) 420.59 (7) (9/2 + ) 475.58 (8) 725.21 (8) 933.54 (16) (9/2 -) 1012.52 (10) 1102.09(10) (7/2 -) 1144.34 (7) 1303.92 (10) 1317.9 (4) 1551 (18) 1605.8 (12) 1787.7 (15) 1864.36 (25) 1915.92 (14) 2042.5 (5) 2231.82 (22) 2239.68 (22) 2315.81 (21) 2339.82 (25) 2851.32 (17) 2871.4(3) (7/2 -) 2905.73 (11) 2969.79 (18) 3000.0 (3) 3020.42 (17) 75 Zn 75 Cu (7) 5 (1) 1.8 (4) 2.1 (4) 16.6(3.5) 7.9(1.7)…”

“…6(16) 3167.0 (4) 3234.82 (13) 3266.7 (3) 3341.42 (20) 3362.02 (15) 3406.6 (3) 3424.88 (21) 3492.32 (24) 3530.66 (25) 3546. 24(34) 3574.0 (4) 3576.9(32) 3667.98 (25) 3818.23 (30) 3840.38 (17) 3886.6(7) 3897.4 (7) 3900. the 268-, 294-, and 421-keV γ rays observed in the 724-keV coincidence gate. Finally, this latter set of three γ rays are also not observed to be in coincidence with each other.…”

Unified Model Studies of N = 84 and N = 80 Nuclei

“…It was soon suggested that en hanced E2 transitions implied collective effects associated with defor mation of the nuclear shape (16)(17)-One then realized that there were two especially simple modes of collective excitation which could be ap plied to a discussion of the nucleus, rotation and vibration. Near magic numbers (closed shells) nuclei are apparently spherical and the low lying excitations are expected to be vibrations about this spherical equilibrium shape.…”