Nuclear Data Sheets Update for A = 118

States built on the 10+isomers in118,120,122,124Sn

“…A summary of all other previously-known states and transitions of 118 Sn is given in Ref. [7], where the spin-parity assignment of the 3108-keV isomer is quoted as 9…”

“…Lower spin, 7 − and 5 − isomers have also been identified. In 118,120,122,124 Sn isomers have been previously observed at 3108-, 2902-, 2766-, and 2657-keV excitation energy, and with 2.5-, 6.26-, 62-, and 45-µs half lives [7][8][9][10][11], respectively. The 10 + spin-parity assignments of these isomers remain tentative, except perhaps in the case of 118 Sn where the most recent published level scheme in Ref.…”

“…Examples of typical excitation functions obtained for previously known transitions of 117−123 Sn [7,9,10,[28][29][30][31] in Experiment IV are shown in Figs. 6, 7 and 8.…”

New sub-μs isomers in125,127,129Snand isomer systematics ofLozeva1, Simpson2, Grawe3 et al. 2008Phys. Rev. C

“…The 5 − states are µs isomers in 116 Sn [46] and 124 Sn [47] only, but these are ns isomers in the other even-A 118-122,128-130 Sn nuclei [48][49][50][51][52] because they can decay by E1 transitions to the 4 + states lying just below them. However, in the odd-A isotopes, the 19/2 + states are all isomeric in the µs range because each of them comes below the (4 + ⊗ νh 11/2 )17/2 − and 19/2 − states.…”

120Sn(p,α)117In and121Sb(p,α)118Sn Reactions: Identification of the117In and118Sn Homologous States

“…In Fig.s 1 and 2 The excitation energies are determined through the calibration of the spectra using a polynomial of rank 2, whose parameters are set by reproducing the well-known excitation energies of levels of 117 In [4] and 118 Sn [5] determined in γ-decay experiments and identified in our α spectra. Quoted energies are estimated to have an uncertainty of 3 keV.…”