A search for low-lying mixed symmetry states in {sup 140}Nd

Journal Article · Wed Jan 28 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3087025· OSTI ID:21255420

Williams, E; Casperson, R J; Werner, V; Ai, H; Heinz, A; McCutchan, E A; Qian, J; Winkler, R ^[1]; Boutachkov, P ^[2]; Chamberlain, M ^[1]; Guerdal, G ^[1]

---

1. WNSL, Yale University, 272 Whitney Ave., New Haven, CT 06520-8124 (United States)
2. Dept. of Physics and Astronomy, Rutgers Univ., New Brunswick, NJ 08903 (United States)

Multipole mixing ratios for transitions between excited 2{sup +} states and the 2{sub 1}{sup +} state in {sup 140}Nd are measured using angular correlation techniques for beta decay reactions. Two transitions with dominant M1 components are identified, and the higher-lying 2{sup +} states involved in these transitions are presented as candidates for the one-phonon mixed-symmetric 2{sup +} state in {sup 140}Nd. Assuming pure two-state mixing between the one-phonon 2{sup +} state and a presumed three-phonon symmetric state yields a mixing matrix element between these states, which is discussed in terms of shell effects on mixed-symmetric behavior in the N = 80 isotones.

• OSTI ID: 21255420
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1090; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR CORRELATION
BETA DECAY
COLLECTIVE MODEL
ISOTONIC NUCLEI
MATRIX ELEMENTS
MIXING RATIO
NEODYMIUM 140
PHONONS
SYMMETRY