Calculations of the binding energies of weakly bound He-He-H, He-He-H-and He-H-H molecules

Calculations of the binding energies of weakly bound He–He–H, He–He–H− and He–H–H molecules

We searched for the existence of weakly bound He–He–H, He–He–H− and He–H– H molecules where the binding energies are expected to be of the order of degrees Kelvin. By employing the best empirical interaction between each pair of particles, we solved the Schrödinger equation for the triatomic systems using hyperspherical coordinates in the adiabatic approximation. We found no bound states for 4H...

Autoionization of He and Autodetachment of He- following Bombardment by H+, H2+, He+, and He Atoms

Theoretical calculations of the H I , He I and He II free - bound continuous emission spectra

We present coefficients for the calculation of the continuous emission spectra of H I, He I and He II due to electron-ion recombination. Coefficients are given for photon energies from the first ionization threshold for each ion to the n = 20 threshold of hydrogen (36.5μ), and for temperatures 100 K ≤ T ≤ 10 K. The emission coefficients for He I are derived from accurate ab initio photoionizati...

3 D quantum scattering calculations of the reaction He + H , + +

An improved version of the S-matrix Kohn variational method has been applied to calculating 3D quantum reaction probabilities of the ion-molecular reaction He+ HT (u) AHeH+ + H. The calculation is carried out for total angular momentum J= 0 and employs the DIM potential surface of Kuntz. Our results show that vibrational excitation of H: enhances the reaction probabilities and are in qualitativ...

A Reestimate of the Protosolar ( 2 H / 1 H ) p ratio from ( 3 He / 4 He ) SW solar wind measurements