Flux of low energy protons in the neighborhood of the moon on 13 December 1966

Lunik 12 measurement of low energy proton flux in vicinity of moo

Study of the nuclear component of primary cosmic rays aboard AES ''Proton-2''

Nuclear component of primary cosmic rays aboard Proton II satellite studied with aid of Cherenkov spectromete

Major Landmark in the Investigation of Outer Space

Press conference on Lunik X, and geochemical assessment of dat

Investigation of cosmic radiation on the AMS ''Luna-10''

Flux of primary cosmic radiation from Luna-1

Registration of Solar Cosmic Rays on the AMS ''luna-11''

Proton flux measurements onboard lunar prob

Registration of Electrons with Energies Greater than 30 Kev in the Near-lunar Space

Measured high energy electron flux in lunar environment by gas-discharge counter on lunar prob

Study of High Energy Gamma-Quanta Beyond the Atmosphere

Measurements of primary cosmic radiation gamma quanta from Proton I and II satellite

Polaron and bipolaron dispersion curves in one dimension for intermediate coupling

Bipolaron energies are calculated as a function of wave vector by a variational method of Gurari appropriate for weak or intermediate coupling strengths, for a model with electron-phonon interactions independent of phonon wave vectors and a short-ranged Coulomb repulsion. It is assumed that the bare electrons have a constant effective mass. A two-parameter trial function is taken for the relative motion of the two electrons in the bipolaron. Energies of bipolarons are compared with those of two single polarons as a function of wave vector for various parameter values. Results for effective masses at the zone center are also obtained. Comparison is made with data of other authors for bipolarons in the Hubbard-Holstein model, which differs mainly from the present model in that it has a tight-binding band structure for the bare electrons.Comment: 11 pages including six figures. Physical Review B, to be publishe