Contract W-7405-ENG. 36 with the U. S. Atomic Energy Commission All LAMS reports are Informal doctunents, usually prepared for a special purpose and primarily prepared for use within the Laboratory rather than for general distribution. This report has not been edited, reviewed, or verified for accuracy. All LAMS reports e:q)re8s the views of the authors as of the time they were written and do not necessarily reflect the opinions of the Los Alamos SoientiSo Laboratory or the final opinion of the authors on the subject.