H. R. Blieden^*, G. Finocchiaro, A. S. Goldhaber, P. D. Grannis, D. Green^†, J. Hietarinta, D. Hochman^‡, R. Kephart, J. Kirz, Y. Y. Lee^§, C. Nef^∥, and R. Thun^¶,**

• State University of New York at Stony Brook, Stony Brook, New York 11794

W. Faissler and Y. W. Tang^{††,‡‡}

• Northeastern University at Boston, Boston, Massachusetts 02115

• ^*Present address: Division of Advanced Energy Research and Technology, RANN Program, National Science Foundation, Washington, D. C.20550.
• ^†Present address: Physics Department, Carnegie-Mellon University, Pittsburgh, Pa. 15213.
• ^‡Present address: Department of Nuclear Physics, Weizmann Institute of Science, Rehovoth, Israel.
• ^§Present address: Brookhaven National Laboratory, Upton, New York 11973.
• ^∥Swiss National Science Foundation Fellow. Present address: University of Geneva, Switzerland.
• ^¶Present address: Physics Department, University of Michigan, Ann Arbor, Mich. 48104.
• ^**Work supported in part by the United States Atomic Energy Commission and by the National Science Foundation.
• ^††Present address: Physics Department, Purdue University, Lafayette, Indiana, 47907.
• ^‡‡Work supported in part by the National Science Foundation.