The reaction 7o~e~160, 2p2n) Sr with E~160) 80 MeV was used to study the nucleus Sr. Measurements were made of the excitation functions, angular distributions, and y-y-t coincidences.From these measurements six new levels were placed in the level scheme of ' Sr at 2683.7, 3609.2, 4367.1, 5308.4, 6364.4, and 7827.8 keV. A gamma ray with a very high anisotropy [ A2 ---1.05 (7), Aq --0.12(6)] feeds the (11 ) level at 5914.5 keV; A new band based on the level at 3525.7 keV was identified. The sequence of transitions decaying down the negative parity band was reordered to S22-1005-876-694 keV.

Using a set of explicitly correlated trial wavefunctions that describe the three lowest singlet and triplet states of the helium atom with symmetry S, P, and D, we calculate the decay rates for all possible magnetic quadrupole (M2) transitions: m 3 P 2 !n 1 S 0 , m 1 P 1 !n 3 S 1 , m 3 D 3 !n 1 P 1 , and m 1 D 2 !n 3 P 2 . Our values are in excellent agreement with the best results in the literature.

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