Novel Organic Ions of High-Spin States. 5. Generation of a High-Spin Ground-State Anion from an Intramolecularly Spin-Frustrated System

Search for low-spin signature inversion in the πi13/2 ⊗ νi13/2 bands in odd-odd 182,184,186 Au has been conducted through the standard in-beam γ-spectroscopy techniques. The experiments for 182 Au and 186 Au have been performed in the Japan Atomic Energy Agency (JAEA) via the 152 Sm (35 Cl ,5 n )182 Au and 172 Yb (19 F ,5 n )186 Au reactions, respectively. A study of 184 Au has been made using a multi-detector array GASP in LNL, Italy, via the 159 Tb (29 Si ,4 n )184 Au reaction. The πi13/2 ⊗ νi13/2 bands in these three nuclei have been identified and extended up to high-spin states. In particular, the inter-band connection between the πi13/2 ⊗ νi13/2 band and the ground-state band in 184 Au has been established, leading to a firm spin-and-parity assignment for the πi13/2 ⊗ νi13/2 band. The low-spin signature inversion is found in the πi13/2 ⊗ νi13/2 bands in 182,184,186 Au according to our spin-assignment and the signature crossing observed at high-spin states.

Download Full-text

Novel organic ions of high-spin states: ESR detection of monoanion of m-phenylenebis(phenylmethylene)

Journal of the American Chemical Society ◽

10.1021/ja00168a013 ◽

1990 ◽

Vol 112 (12) ◽

pp. 4700-4702 ◽

Cited By ~ 38

Author(s):

Michio Matsushita ◽

Takamasa Momose ◽

Tadamasa Shida ◽

Yoshio Teki ◽

Takeji Takui ◽

...

Keyword(s):

High Spin ◽

Spin States ◽

Organic Ions ◽

High Spin States

Download Full-text

E2Matrix Elements Between High-Spin States in the Ground-State Bands ofSm152andSm154

Physical Review Letters ◽

10.1103/physrevlett.23.1051 ◽

1969 ◽

Vol 23 (18) ◽

pp. 1051-1054 ◽

Cited By ~ 31

Author(s):

I. A. Fraser ◽

J. S. Greenberg ◽

S. H. Sie ◽

R. G. Stokstad ◽

D. A. Bromley

Keyword(s):

High Spin ◽

Ground State ◽

Spin States ◽

High Spin States

Download Full-text

SUCCESSIVE DECAYS FROM Pr137 AND Ce137m: DECAY OF ADJACENT PRASEODYMIUM ISOTOPES

Canadian Journal of Physics ◽

10.1139/p58-150 ◽

1958 ◽

Vol 36 (11) ◽

pp. 1487-1508 ◽

Cited By ~ 28

Author(s):

G. T. Danby ◽

J. S. Foster ◽

A. L. Thompson

Keyword(s):

Excited State ◽

Small Group ◽

Electron Capture ◽

High Spin ◽

Gamma Rays ◽

Isomeric State ◽

Ground State ◽

Branching Ratios ◽

Spin States ◽

High Spin States

The decay of Pr137 entirely to a 9.0-hour ground state of Ce137 was independently discovered. By allowed electron capture, Ce137 decays predominantly to a low-lying state of La137, with only a 3% branching to a 440-kev excited state. The 440-kev transition is at least predominantly E2 in character.A 34.4-hour isomeric state produced by the La139(p, 3n)Ce137m reaction decays by a 254.5-kev M4 transition to the 9-hour -ground state. A 0.6% branching was found from the isomeric state directly to a small group of apparently high spin states in La137.Studies of mass-separated isotopes confirmed the existence of 1.5-hour Pr137 and 1.0-hour Pr136. The K-capture to positron branching ratios observed in the decay of Pr139, Pr138, Pr137, and Pr136 show that these isotopes decay by allowed transitions to their cerium daughters. Characteristic gamma rays were observed.

Download Full-text

The Decay of 117Cd and 117Cdm

Canadian Journal of Physics ◽

10.1139/p72-268 ◽

1972 ◽

Vol 50 (17) ◽

pp. 2012-2026 ◽

Cited By ~ 10

Author(s):

P. R. Gregory ◽

M. W. Johns

Keyword(s):

High Resolution ◽

High Spin ◽

Ground State ◽

Energy Levels ◽

Spin States ◽

Β Decay ◽

High Spin States ◽

Coincidence Data ◽

Weak Transitions

The energy levels of 117In have been investigated following the β decay of 3.4 h 117Cdm and 2.5 h 117Cdg. Using high resolution Ge(Li) detectors singly and in coincidence, 127γ transitions have been observed. Eighty-five of these transitions have been classified by both coincidence data and energy fit, 29 weak transitions by energy fit alone, and 12 remain unclassified. Thirty-seven levels in 117In have been established; of these, 24 are low spin states fed from the ground state and 13 are high spin states fed from the isomer. Spin and parity assignments for the newly established levels are discussed.

Download Full-text