/sup 181/Ta(p,2n. gamma. )/sup 180/W reaction

Journal Article · Sun Apr 01 04:00:00 EST 1979 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.19.1191· OSTI ID:6281684

Mann, L G; Carlson, J B; Lanier, R G; Struble, G L; Buckley, W M; Heikkinen, D W; Proctor, I D; Sheline, R K

States populated by the /sup 181/Ta(p,2n..gamma..)/sup 180/W reaction were studied using in-beam ..gamma..-ray spectroscopy with standard techniques that included fast timing, coincidences, and angular distributions. We populate the previously well characterized bands built on the ground state and the 5.2-ms 8/sup -/ state at 1529.0 keV up to the 12/sup +/ and 12/sup -/ levels, respectively. In addition we identify the rotational band built on the 7.4-ns K = 2/sup -/ octupole vibrational state at 1006.4 keV up to the J/sup ..pi../ = 11/sup -/ member and we observe the decoupling of the octupole phonon from the core rotation. A state at 1634.6 keV is populated with moderate intensity. If this state is the one reported at 1637 keV in (d,d/sup prime/) excitation then it is most likely the K = 3/sup -/ octupole vibration. We observe the gamma-vibrational band up to the spin 7 member and also a new band built on a metastable state at 1639.8 keV. This state has a half life of 19.2 +- 0.3 ns and most likely J = 5 with uncertain parity.

• Research Organization: Lawrence Livermore Laboratory, Livermore, California 94550
• OSTI ID: 6281684
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 19:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BARYON REACTIONS
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
DISTRIBUTION
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
EXCITED STATES
GAMMA SPECTRA
HADRON REACTIONS
HALF-LIFE
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEV RANGE
MEV RANGE 10-100
NEUTRON SPECTRA
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
PARITY
PARTICLE PROPERTIES
PROTON REACTIONS
RADIOISOTOPES
ROTATIONAL STATES
SECONDS LIVING RADIOISOTOPES
SPECTRA
SPIN
STABLE ISOTOPES
TANTALUM 181 TARGET
TARGETS
TUNGSTEN 180
TUNGSTEN ISOTOPES
VIBRATIONAL STATES