Rise and Fall of the Spin Alignment in Deep-Inelastic Reactions

G. J. Wozniak; R. J. McDonald; A. J. Pacheco; C. C. Hsu; D. J. Morrissey; L. G. Sobotka; L. G. Moretto; S. Shih; C. Schück; R. M. Diamond; H. Kluge; F. S. Stephens

doi:10.1103/PhysRevLett.45.1081

Rise and Fall of the Spin Alignment in Deep-Inelastic Reactions

G. J. Wozniak, R. J. McDonald, A. J. Pacheco, C. C. Hsu, D. J. Morrissey, L. G. Sobotka, L. G. Moretto, S. Shih, C. Schück, R. M. Diamond, H. Kluge, and F. S. Stephens

Phys. Rev. Lett. 45, 1081 – Published 29 September 1980

Abstract

Both the magnitude and alignment of the transferred angular momentum in the reaction ${}^{165}{Ho}$ + ${}^{165}{Ho}$ have been measured as a function of $Q$ value via continuum $γ$ -ray multiplicity and anisotropy techniques. Two regimes are observed: A low— $Q$ -value regime where the aligned angular momentum component dominates over the random components, and a large— $Q$ -value regime where the random components dominate and decrease the spin alignment.

Received 22 July 1980

DOI:https://doi.org/10.1103/PhysRevLett.45.1081

Authors & Affiliations

G. J. Wozniak, R. J. McDonald, A. J. Pacheco^*, C. C. Hsu^†, D. J. Morrissey, L. G. Sobotka, L. G. Moretto, S. Shih^‡, C. Schück^§, R. M. Diamond, H. Kluge^∥, and F. S. Stephens

Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720

^*Permanent address: Comisión Nacional de la Energiá Atómica, Buenos Aires, Argentina.
^†Permanent address: Institute of Atomic Energy, Beijing, China.
^‡Permanent address: Shanghai Institute of Nuclear Research, Shanghai, China.
^§Permanent address: Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, Orsay, France.
^∥Permanent address: Hahn-Meitner Institute, Berlin, Germany.