Pseudospin symmetry and quantized alignment in nuclei

• Published in: Physical review letters Vol. 65; no. 3; pp. 301 - 304
• Main Authors: Stephens, FS, Deleplanque, MA, Draper, JE, Diamond, RM, Macchiavelli, AO, Beausang, CW, Korten, W, Kelly, WH, Azaiez, F, Becker, JA, Henry, EA, Yates, SW, Brinkman, MJ, Kuhnert, A, Cizewski, JA
• Format: Journal Article
• Language: English
• Published: United States American Physical Society 16-07-1990
• Subjects: ANGULAR MOMENTUM; DEFORMED NUCLEI; DYSPROSIUM ISOTOPES; ENERGY-LEVEL TRANSITIONS; HEAVY NUCLEI; ISOTOPES; LEAD ISOTOPES; LIE GROUPS; MERCURY ISOTOPES; Nuclear Experiment; NUCLEAR PHYSICS AND RADIATION PHYSICS; NUCLEI; Physics; RARE EARTH ISOTOPES; SU GROUPS; SU-3 GROUPS; SYMMETRY GROUPS 653001 > Nuclear Theory > Nuclear Structure, Moments, Spin, & Models; THALLIUM ISOTOPES
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.65.301

Nine superdeformed bands in several nuclei of the mass-190 region all have transitions of the same or equivalent energies to within an average of about 1 keV--almost identical. Furthermore, it is found that transitions of the same energy do not always connect levels of the same spin, indicating noncollective angular momentum alignments that are all very nearly integers (0, 1{h bar}, or 2{h bar}). Possible explanations involving pseudospin are discussed.