Vanishing spin alignment: Experimental indication of a triaxial {sup 28}Si+{sup 28}Si nuclear molecule

Journal Article · Fri Oct 01 04:00:00 EDT 1999 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.60.041303· OSTI ID:686576

Nouicer, R; Beck, C; Freeman, R M; Haas, F; Aissaoui, N; Bellot, T; de France, G; Disdier, D; Duchene, G; Elanique, A; Hachem, A; Hoellinger, F; Mahboub, D; Rauch, V ^[1]; Szanto de Toledo, A ^[2]; Elanique, A; Mahboub, D; Cavallaro, S ^[3]; Sanders, S J; Dummer, A ; Prosser, F W ^[4]; Uegaki, E ^[5]; Abe, Y ^[6]

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1. IReS, UMR7500, CNRS-IN2P3 et Universite Louis Pasteur, F-67037 Strasbourg, Cedex 2 (France)
2. Instituto de Fisica da Universidade de Sao Paulo, Sao Paulo (Brazil)
3. Dipartimento di Fisica dellUniversita di Catania, INFN and LNS, Catania (Italy)
4. Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045 (United States)
5. Department of Physics, Akita University, Akita 010 (Japan)
6. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto (Japan)

Fragment-fragment-{gamma} coincidences have been measured for {sup 28}Si+{sup 28}Si at an energy corresponding to the population of a conjectured resonance in {sup 56}Ni. Fragment angular distributions as well as {gamma}-ray angular correlations indicate that the spin orientations of the outgoing fragments are perpendicular to the orbital angular momentum. This differs from the {sup 24}Mg+{sup 24}Mg and the {sup 12}C+{sup 12}C resonances, and suggests two oblate {sup 28}Si nuclei interacting in an equator-to-equator molecular configuration. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 686576
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 60; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR MOMENTUM
GAMMA SPECTRA
HEAVY ION REACTIONS
NICKEL 56
NUCLEAR FRAGMENTATION
SILICON 28 REACTIONS