Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “TANTALUM 163”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

Nuclear Data Sheets for A = 163

The available data from the various reaction and decay studies leading to nuclides having mass number A=163 have been reviewed. These data are summarized and presented, together with adopted level schemes and properties, for nuclides from Eu (Z=63) through Os (Z=76). {sup 163}Eu represents a new addition to these nuclides. Level structures are now known for {sup 163}Ta and {sup 163}W through high-spin studies and recoil-decay tagging techniques. Several radioactive decays in this mass chain are not known at all or poorly established. No {beta} or {gamma}-ray data are available for {sup 163}Re-{sup 163}W-{sup 163}Ta-{sup 163}Hf {epsilon} decay chain. Those for {sup 163}Hf-{sup 163}Lu-{sup 163}Yb {epsilon} decay chain and {sup 163}Eu-{sup 163}Gd-{sup 163}Tb {beta}{sup -} decay chain are very sketchy. This evaluation is an update and revision of the previous one (2000Si01)

73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗

Rotational structures and the wobbling mode in {sup 167}Ta

Excited states in the neutron-deficient nucleus {sup 167}Ta were studied through the {sup 120}Sn({sup 51}V,4n) reaction. Twelve rotational bands have been observed and the relative excitation energy of each sequence is now known owing to the multiple interband connections. Several quasineutron alignments were observed that aided in the quasiparticle assignments of these bands. The resulting interpretation is in line with observations in neighboring nuclei. Trends in the wobbling phonon energy seen in {sup 161,163,165,167}Lu and {sup 167}Ta are also discussed and particle-rotor model calculations (assuming constant moments of inertia) are found to be inconsistent with the experimental data.

73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗