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The reactions (n,~Be), (n, Be), and (Li, SB) on +Ca at E(n)=78 MeV and E( Li)=80 MeV were used to determine the mass excesses of 3Ar (-31. 98+ 0.07 MeV}, 4~Ar(-29.727 + 0.06 MeV}, and 48Ar (-29.732+ 0.07 MeV} by counter telescope techniques. Excited states in 4~Ar at 1.74+0.05, 2.55+0.05, 3.56+0.07, and 4.74+0.10 MeV and in 45Ar at 1.66+0.05, 2.42+0.05, and 3.25+ 0.07 MeV were also observed. Comparisons are made with mass predictions calculated from simple mass relations based on the shell model and with those obtained from the Garvey and Kelson approach. NUCLEAR REACTIONB~Ca(n, 'Be), {a 'Be) a=78 MeV; 8Ca( Li 'B) E=80

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By utilizing particle-identification techniques to detect the two breakup a particles from 8 Be, we have studied the reactions 12 C( 12 C, 8 Be) 16 0 and 16 O( 12 C, 8 Be) 20 Ne. The ( 12 C, 8 Be) reaction strongly populates the positive-parity four-particle, four-hole rotational band of le O based on its 6.05-MeV (0 + ) state, and both the positive-and negative-parity rotational bands of 20 Ne based on its ground-state (0 + ) and 5.80-MeV (1") state, respectively.

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Results from investigations of the T ~ 3/2 nuclei 5 H , 7He and 9Li z and of the T z 1 nuclide 4H employing the (6Li ,8 B) reaction at 80 and 93 MeV are presented. In 9Li the locations of several low-lying lp-shell * t =1= NUCLEAR REACTIONS 6Li(6Li,8B), 7Li(6Li,8B), 9Be(6Li,8B), 11 6. 8 B(LJ., B), E = 80.0,93.3 MeV; measured 0(8).