Accuracy of Auxiliary Field Approach for Baryons

We provide a check of the accuracy of the auxiliary field formalism used to derive the Effective Hamiltonian for baryons in the Field Correlator Method. To this end we compare the solutions for the Effective Hamiltonian with those obtained from the solution of the Salpeter equation. Comparing these results gives a first estimate of the systematic uncertainty due to the use of the auxiliary field formalism for baryons.Comment: 6 pages, 2 tables; published versio

SLUG PROGRAM QUARTERLY REPORT FOR APRIL, MAY, JUNE 1953

Preliminary results are reported on the coating of U by immersion in nonreacting molten Mg saturated with Zr, Ni, or Si. A corrosion analysis of the resulting Mg-- Zr outer coat was performed on one failure occurring in boiling water. Further experiments are described on the corrosion testing of Cu-plated and Zn-dipped U. Improvements in the Zn-dip process are uncertain, however, because hot-dip Zn coats show comparable corrosion characteristics. Investigations have been conducted on the casting of U in cans of Zr,U, and Nb-- U alloys. Information was accumulated on the nature of the bonding characteristics, thermal treatment, and corrosion testing of such canning techniques. A new series of U-Nb alloys has been prepared for the purpose of studying the phase transformations of U. Data are given for the fabrication, phase characteristics, and physical and chemical properties of the series. Resistance-temperature curves were determined for U--Mo alloys, in addition to studies of corrosion and grain size in U--Zr--Hb alloys. A method is proposed for determining the thermal conductivity of U from diffusivity measurements. (C.H.

VANADIUM-CHROMIUM ALLOY SYSTEM

On the basis of data obtained from melting point determinations, microscopic examination, and x-ray investigations, a phase diagram is proposed for the V-Cr alloy system The system forms a complete series of solid solutions with a minimum occurring in the solidus at 1750 deg C and approximately 70 wt.% Cr. No intermediate phases were found in this system. Hardness and corrosion data are presented as a function of alloying composition. (auth