3. The level scheme of Figure 5.6 would lead us to expect I" - " for the ground state of 203 TI (Z - 81), while the obse

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3 The Level Scheme Of Figure 5 6 Would Lead Us To Expect I For The Ground State Of 203 Ti Z 81 While The Obse 1 (36.46 KiB) Viewed 32 times

3. The level scheme of Figure 5.6 would lead us to expect I" - " for the ground state of 203 TI (Z - 81), while the observed value is A similar case occurs in 207 Pb (N - 125) and "Hg (N = 119), where it is expected but is observed. Given that the pairing force increases strongly with , give the shell-model configurations for these nuclei that are consistent with the observed spin-parity assignments. 4. Figure 5.6 is only a schematic, average representation of the shell-model single-particle states. The energies of the states will vary with the proton number and neutron number. To illustrate this effect, consider the available states of the 51st proton in Sb isotopes. Make a chart in the style of Figure 5.25 showing the and }* states in Sb to 193Sb. (Consult the Table of Isotopes and the Nuclear Data Sheets for information on the energy levels.) Discuss the relative positions of the 87/2 and ds/2 proton states as a function of neutron number.