Spin assignment

At -40 °C the spectrum corresponds to an intermediate rate of interconversion. The outer lines and four of the six components of the central line retain the same spin assignment upon ring inversion and remain fixed and narrow, while the remaining lines broaden and disappear. 

The decay of 36-s 106Tc and of 5-s 108Tc into excited levels of the even-even isotopes 106Ru and 108Ru was studied in detail. Extended level schemes, spin assignments, multipole mixing ratios and B(E2) values for 108Ru and... 

Discrepancies occur in those cases where Figure 4.2 indicates hemlines at odd mass numbers 85, 117, 169 and 209. The Ford reconstruction predicts 84, 116, 170 and 208 respectively. The central-held model that was used for nuclear-spin assignment before [62] requires values of 86, 118, 168 or 170, and 210 respectively. In all cases the observed values are, remarkably, the average of two theoretical predictions. 

From these spin assignments we conclude the following ... 

A detailed spin assignment is not available for the polymer at the present. However, compared with splittings in anthracene cation and anion (26), the 9-G coupling constant obtained here does clearly point out the delocalized ir-electron nature of the paramagnetic center. 

Fig. 24 Top (upper) and side (lower) views on differentiy reconstructed (110) surfaces. The numbers indicate corresponding spin assignments of Ising model.

Spin and isotopic spin assignments for the B levels above the proton binding energy are suggested by analysis of the radiative transitions in the py) reaction and by comparison with Be . They are supported by analysis of the Be ( ) scattering resonances. 

The levels are obtained from the (dn), (pp ) and (nn ) reactions below the proton binding energy, and above this energy from the resonant reactions of protons with phosphorus. No accurate studies of the cascade radiations m the (py) reaction have been made, but some spin assignments for resonance levels are available [33]. 

Level introduced in [02Fo03] see different spin assignment in this work and in [05Pa48]. 

It is clear that most of the lineup permutations can be avoided by using the same spin assignments within determinants for each configuration with the same number of open shells. The matrix elements for different configuration pairs therefore differ only by the g 2 integrals needed for a specific case. The main work in the calculations then is... 

R case Basic integrals Linear coefficients for Spin assignments y S e r]... 

Note that R cases with opposite closed shells (e.g., vs. c if) have identical interactions fOT the same spin assignment Z hence, cases for R = 4—6 are not given explicitly. In addition, hole Inversion of the y, 5, , rj spins for a given R case also causes no change in the interaction hence, only three spin assignments are shown... 

The direct measurement of nuclear ground (and isomeric) state spins from the hfs is of basic importance for all indirect spin assignments of nuclear spectroscopy. The spins provide a stringent test of theoretically... 

Some of the data are compared in Fig. 14.5 with the behaviour expected from various spin assignments for the r, assiuning that the particles produced are point-like. 

---