F. Luo, G.C. MeBane, 0. Kim, C.F. Giese, and W.R. Gentry (J. Chem Phys. 98,3564 (1993) reported experimental observation of the He2 complex, a species that had escaped detection for a long time. The fact that the observation required temperatures in the neighbourhood of 1mK is consistent with computational studies which suggest that hc De, for He, is about 1.51 X 10-23 J, hc Do about 2 x 10-26 J, and R about 297 pm.

(a) Determine the Lennard- [ones parameters '0' and E and plot the Lennard- [ones potential for He-He interactions.

(b) Plot the Morse potential given that a= 5.79 x 1010 m-1,