AN ACCURATE CALCULATION OF THE THREE-BODY POTENTIAL FOR THE GROUND STATE OF THE HELIUM TRIMER

摘要: An extended group function model has been applied to determine the three‐body potential for ground state of helium trimer. The basis set calculations is an uncontracted (17s,6p,4d,3f) Gaussian type functions contracted [8s,6p,4d,3f]. Three different types configurations were considered: (i) equilateral triangles side R, R∈{3.5,4.0,...,8.5,9.0} a.u., (ii) linear with R12=R23, R12∈{3.5,4.0,...,8.5,9.0} and (iii) a pseudo‐random configurations. For triangular configurations, equal distances larger than 5.5 magnitude ratio between sum corresponding two‐body potentials, less 0.003. value configuration distance R=5.669 289 a.u.=3 A, respectively 0.040 μH −0.045 μH. In long range region calculated very close Axilro...