Infrared laser enhanced reactions: V→V and V→T energy transfer in the O3SiF4O2 system

Rapid V→V energy transfer between SiF₄ and O₃ has been observed following laser excitation of either O₃ or SiF₄. A CO₂ laser tuned to either the 9.6 μ P(30) or P(32) transitions was used to promote vibrational excitation in O₃ and SiF₄, respectively. In experiments employing the P(32) transition, the V→V transfer to O₃ and subsequent reaction of O₃² with NO were used to obtain the rate constant of V→T deactivation of SiF₄² by O₂.

Fractional modulation measurements of the chemiluminescence generated by the O₃ + NO reaction were used in experiments employing the P(30) transition to obtain a rate constant for the V→V energy transfer between O₃² and SiF₄.

     

Diskontinuierliche und diskrete Gruppen von Isometrien metrischer Räume

Ohne Zusammenfassung     

Untersuchungen über das Spurproblem von holomorphen Funktionen auf analytischen Mengen

Ohne Zusammenfassung     

Quasimolecular nuclear optical potentials

A theory is presented to calculate potentials for the elastic nuclear heavy-ion scattering in a phenomenological way. The density properties of finite nuclei are derived with a schematic ansatz for the interaction energy between nuclear matter. The same interaction energy is applied to the calculation of the real part of the heavy-ion potential, which is of the quasimolecular type. The imaginary part is connected with the outflow time of nuclear matter out of compressed regions of overlapping nuclei. The resulting cross section for the elastic O¹⁶-O¹⁶ scattering reproduces the experiment up to 30 MeV quite well. An effective compression modulus of the S³² compound system can be deduced from the scattering experiment. It results to be about 200 MeV.     

Polarization of 22 MeV neutrons elastically scattered from liquid tritium

The asymmetries from elastic scattering of 22.1 MeV incident neutrons was measured for 11 laboratory angles between 40° and 118.5°. The extrema are −60% at 85° (lab) and +98% at 110° (lab).