Precise intrinsic quadrupole and hexadecapole moments of 233 > 234 > 235 -238 u have been determined from muonic K, L, M, and TV x rays. For 233 ' 235 u seven E2 matrix elements were independently determined. These E2 matrix elements are in good agreement with the adiabatic rotational model; this agreement is further improved if a correction for &K = 1 band mixing is included. The measured hexadecapole moments are in good agreement with shellcorrection calculations and Hartree-Fock calculations.

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Relative yields of 35 products extending from 3H to 76Br have been measured for the interaction of 3.9-6eV (278-NeV/amu)~4 N ions with copper. For purposes of comparison, cross sections of 54 nuclides produced by the irradiation of Cu with 3.9-GeV protons are also reported. Although the over-all patterns of yields for N ions and protons are qualitatively similar, there are significant differences. In the mass region 37~A -64, the mass yield curve for~4 N iona decreases more rapidly with decreasing A than does the proton curve. No difference could be detected in the shapes of the charge dispersion curves. However, the data indicate a small shift (& 0.1 Z unit) favoring neutron-deficient products near the target in the case of~4 N ions. The mass yield curves appear to have similar shapes from A = 40 down to A~24, but formation of the stiQ lighter products, YBe and particularly 3H, is favored in the~4 N irradiation. An observed enhancement of products such as 82Zn, 68Ga, and Ge is interpreted as arising largely from secondary reactions rather than from primary processes which add charge or mass from the~4 N to the target nuclei. Some discussion of results from this and other experiments with high-energy protons and heavy iona with complex nuclei is presented in terms of the concepts of limiting fragmentation and factorization.NUCLEAR REACTIONS Cu( 4N, spallation), E = 3.9 GeV; measured relative o'(A, 2), 35 products~H -78Br. Cup, spallation), E = 3.9 GeV measured a(A, Z), 54 products 3H-89Ge. Natural targets, Ge(Li), P counting, radiochemistry.

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