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The differential cross sections of the 'He groups emitted in the "Ca(d, 'He)"K reaction have been measured at a bombarding energy of 76 MeV. The 'He particles were measured with an energy resolution of 55 keV. Differential cross sections were fitted using a distorted wave program and spectroscopic factors were deduced for several proton hole states of "K. The single hole final states essentially exhaust the sum rule for the 1d 3/2 2s 1/2 and 1d ", subshells.Because of the strong absorption of 'He particles in nuclear matter, this reaction is a surface reaction, and as such populates only the outer shells. By contrast, the ' Ca(p, 2p) reaction is able to populate all proton hole states, including those of the 1p and 1s shells. The population of the quartet of odd parity states, which from a nuclear structure point of view consist of a 1d3/2 hole coupled to the 3 state of ' Ca, was observed, The differential cross sections for the 'He groups populating those states were calculated using a coupled channels program and these calculations are in satisfactory agreement with the experimental results. NUCLEAB BEACTIONS 4 Ca(d, 3He), E= 76 MeV; measured 0. (8), enriched target. DKBA and CCBA analysis, deduced spectroscopic factors.

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