Evidence for weak coupling in sup 145 Pm

• Published in: Physical review. C, Nuclear physics Nuclear physics, 1992-04, Vol.45:4
• Main Authors: Glasmacher, T., Caussyn, D.D., Cottle, P.D., Johnson, T.D., Kemper, K.W., Womble, P.C.
• Format: Article
• Language: English
• Subjects: 663560 > Nuclear Mass Ranges-- A=90-149-- (1992-); ALPHA DECAY RADIOISOTOPES; ANGULAR DISTRIBUTION; BARYONS; BETA DECAY RADIOISOTOPES; CHARGED-PARTICLE REACTIONS; COINCIDENCE METHODS; COINCIDENCE SPECTROMETRY; CONVERSION; COUNTING TECHNIQUES; DATA; DECAY; DISTRIBUTION; E3-TRANSITIONS; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EXPERIMENTAL DATA; FERMIONS; FLUORINE 19 REACTIONS; HADRONS; HEAVY ION REACTIONS; IN-BEAM SPECTROSCOPY; INFORMATION; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION; INTERNAL CONVERSION RADIOISOTOPES; ISOTOPES; MATHEMATICAL MODELS; MEV RANGE; MEV RANGE 10-100; MULTIPOLE TRANSITIONS; NEUTRONS; NUCLEAR DECAY; NUCLEAR MODELS; NUCLEAR PHYSICS AND RADIATION PHYSICS; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; NUMERICAL DATA; ODD-EVEN NUCLEI; PROMETHIUM 145; PROMETHIUM ISOTOPES; RADIOISOTOPES; RARE EARTH ISOTOPES; RARE EARTH NUCLEI; SPECTROSCOPY; TARGETS; TELLURIUM 130 TARGET; WEAK-COUPLING MODEL; YEARS LIVIN 663450 > Heavy-Ion-Induced Reactions & Scattering-- (1992-)
• ISSN: 0556-2813; 1089-490X
• DOI: 10.1103/PhysRevC.45.1619

States in {sup 145}Pm were studied in the reaction {sup 130}Te({sup 19}F,4{ital n}) at a beam energy of 75 MeV using techniques of in-beam {gamma}-ray and conversion electron spectroscopy. Measurements were made of {gamma}-{gamma} coincidences, {gamma}-ray angular distributions, conversion electrons, and excitation functions between 70 and 85 MeV. The reduced {ital B}({ital E}3) transition strength for the 795 keV (11/2{sup {minus}}{r arrow}5/2{sub g.s.}{sup +}) transition was determined to be 7.8(18) Weisskopf units, supporting the interpretation of the 11/2{sup {minus}} state as a {ital h}{sub 11/2} proton state. A negative-parity sequence built on the 11/2{sup {minus}} state as well as eleven new states above the 1503 keV 15/2{sup +} state were found. A weak coupling model can explain the structure of the deduced decay scheme up to an energy of 2.5 MeV.