Michio Matsuzawa

`Slow' variable discretization: a novel approach for Hamiltonians allowing adiabatic separation of variables

We propose a novel approach for Hamiltonians allowing adiabatic separation of variables. Our method is based on the assumption of smoothness of the motion associated with the adiabatic variable instead of its slowness, which is assumed traditionally. Convergence in terms of the number of coupled channels in our method corresponds to the standard adiabatic expansion. However, neither laborious calculations of non-adiabatic couplings nor a priori information on locations of avoided crossings are required. The method is illustrated by calculating bound-state energies for several three-body Coulomb systems for states with zero total angular momentum.

IONIZATION OF LONG-LIVED HIGHLY EXCITED ATOMS BY COLLISION WITH MOLECULES.

For the ionization of long‐lived highly excited atom A** by collision with molecule B A**+B→A++B+e, a mechanism is proposed in which an electron in the long‐lived highly excited atom is ionized as a result of its energy gain from the molecule by the rotational de‐excitation. The cross sections at thermal velocities are calculated to be of the order of 10−13 cm2 for polar molecules according to the proposed mechanism. This result is in reasonable agreement with experimental data.

Electron Transfer from Highly Excited Atoms to Molecules

It is theoretically shown that the rate constant for reaction of electron transfer from highly excited atoms A ** to polyatomic molecules B, \begin{aligned} \text{A

Reactions of Highly Excited Atoms with Molecules A**+BC→A++B+C-

^{**}

High-lying doubly excited states of H- and He II. 1P0 states

}+\text{B}{\rightarrow}\text{A

m- and l-Changing Collisions of High-Rydberg Atoms with Rare-Gas Atoms

^{+}

Collisional Excitation Transfer between Hydrogen Atoms. II. H(2S) + H(1S) → H(1S) + H(2S)

}+\text{B

Excitation of π Electrons in Benzene by Electron Impact

^{-}

Hyperspherical L2-integrable basis method for energetic proton and anti-proton impact autoionization

}, (1) \end{aligned} at thermal velocities is equal to that of non-dissociative thermal electron capture by the molecules B, \begin{aligned} \mathrm{e}+\text{B}{\rightarrow}\text{B

Validity of the impulse approximation in Rydberg-neutral collisions

^{-}