ELECTRON SCREENING IN THE BE-7-]B-8+GAMMA REACTION(P)

We evaluate the effect of screening by bound electrons in the Be-7(p, gamma)B-8 reaction, where the Be-7 target contains bound electrons, in the framework of the adiabatic representation of the three-particle p roblem. A comparison with two other approximations (united atom and fo lding) is presented. A good agreement between the ''united atom'' appr oximation and the exact solution is found. We also discuss the screeni ng corrections induced by two K-shell electrons on a Be-7 target. The consequences of bound electron screening for Be-7 and B-8 solar neutri no fluxes are discussed. (C) 1998 Elsevier Science B.V.