PROTON DECAY AND SHAPES OF NEUTRON-DEFICIENT NUCLEI

The multiparticle theory of proton radioactivity is used to calculate the half-lives of Tm-147, Tm-147m, Lu-150, and Lu-151 nuclei with resp ect to proton decay. Deformation of decaying nuclei (which were studie d earlier only in the spherical model) was taken into account in these calculations. Theoretical results are in agreement with experimental data if the calculations are performed with the deformation parameter beta(2) = 0.1-0.2 and with proton orbitals 7/2(-)[523] and 7/2(+)[404] for Tm-147; 1/2(+)[410] for Tm-147m; 7/2(-)[523], 7/2(+)[404], and 5/ 2-[532] for Lu-150; and 7/2(-)[523] and 7/2(+)[404] for Lu-151. Values obtained for the parameter beta(2) are in reasonable agreement with t he extensively used systematics. The spins and parities of nuclei unde r investigation are predicted.