Contents

01 August 1986
Vol 233, Issue 4763

About The Cover

Cover image expansion

Multiple-quantum NMR spectroscopy probes magnetic interactions in a network of coupled nuclei by recording the collective response of a group of coherently excited spins. The spectrum in the center, obtained from polycrystalline adamantane, shows resonances arising from the net absorption and emission of up to 60 quanta of electromagnetic radiation. See page 525. [Spectrum by J. Baum, M. Munowitz, A. N. Garroway, and A. Pines. Cover design by M. Munowitz and R. Dennis, Technical Information Division, Lawrence Berkeley Laboratory, Berkeley, CA 94720]