Evidence for spin fluctuations in the deep-inelastic reaction ¹⁶⁵Ho + ¹⁶⁵Ho at 8.5 MeVamu

Journal Article · Mon Jan 04 04:00:00 EST 1982 · Nuclear Physics. A

DOI:https://doi.org/10.1016/0375-9474(82)90181-6· OSTI ID:1077839

McDonald, R. J. ^[1]; Pacheco, A. J. ^[2]; Wozniak, G. J. ^[1]; Bolotin, H. H. ^[3]; Moretto, L. G. ^[1]; Schück, C. ^[4]; Shih, S. ^[5]; Diamond, R. M. ^[1]; Stephens, F. S. ^[1]

---

1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division
2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division; National Atomic Energy Commission (CNEA), Buenos Aires (Argentina)
3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division; Univ. of Melbourne (Australia). School of Physics
4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division; Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse, Orsay (France)
5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division; Shanghai Inst. of Nuclear Research (China)

In this paper, both the magnitude and alignment of the transferred angular momentum in the reaction ¹⁶⁵Ho + ¹⁶⁵Ho have been measured as a function of Q-value via continuum γ-ray multiplicity and anisotropy techniques. The spin transfer and the continuum γ-ray anisotropy increase throughout the quasi-elastic region. The spin transfer as a function of Q-value saturates at ~ 35h/fragment, the anisotropy peaks at a value of ~2 and then decreases to near unity for the largest Q-values. Finally, the observed anisotropies are in good agreement with predictions from an equilibrium statistical model in which thermal excitation of angular-momentum-bearing collective modes and neutron evaporation give rise to in-plane components of the angular momentum.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Office of High Energy and Nuclear Physics and Nuclear Sciences
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 1077839
• Report Number(s): LBL--11608
• Journal Information: Nuclear Physics. A, Journal Name: Nuclear Physics. A Journal Issue: 1 Vol. 373; ISSN 0375-9474
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
nuclear reactions