The Disintegration of Carbon by Deuterons

Minutes of the Meeting at Washington, April 27-29, 1950

“…from slow neutron fission of Pu 239 and U 235 , respectively, found by various investigators. 1 Evidently the delayed neutron emitters from Pu 239 , U 235 , Th 232 , and U 238 fission are identical in the life region indicated. The delayed neutron yield after 300 sec.…”

“…On Penetrating Showers and Meson Production. * K. SITTE, Syracuse University.-The local production of penetrating showers, both by single penetrating particles and by air shower particles, has been studied at an altitude of 3260 m. From the results, the following conclusions can be drawn: (1) The production in a nuclear collision of a shower containing several penetrating particles becomes probable only at very large primary energies. (2) For smaller primary energies, collisions result predominantly in the ejection of a small number of "knock-on nucleons."…”

“…Then, the relativistic effects are described by the metric field alone. This yields a new version of the approximation method where co-ordinate transformations play the same role as dipoles in (1) toward the vanishing of certain surface integrals and the fulfilment of the integrability conditions. i A. Einstein and L. Infeld, Can.…”

“…H. HAUPTMAN AND J. KARLE, Naval Research Laboratory.-A complete set of inequalities in the crystal structure factors based on the positiveness of the electron distribution function has been derived. 1 The relation between these inequalities and the equalities which result from the limiting case of the point atom approximation has been studied from the point of view of a set of algebraic equations. The equalities afford a basis for adjusting the observed magnitudes of the crystal structure factors which El.…”

Changes in Conductivity of Germanium Induced by Alpha-Particle Bombardment

“…76, 442 (1949). 3 A preliminary account of this work was presented by the authors at the American Physical Society Meeting in Oak Ridge (March, 1950), Phys. Rev.…”