4.5 Article

Lifetime measurements and nuclear deformation in the A ≈ 100 region

Journal

PHYSICAL REVIEW C
Volume 86, Issue 1, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.86.014321

Keywords

-

Funding

  1. IN2P3 (France)
  2. EPSRC (UK)
  3. EPSRC [GRH71161]
  4. US Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357]
  5. MINECO (Spain) [FIS2011-23565]
  6. Science and Technology Facilities Council [ST/H008713/1, ST/J000159/1, EP/D05141X/1] Funding Source: researchfish
  7. STFC [EP/D05141X/1, ST/J000159/1, ST/H008713/1] Funding Source: UKRI

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The EUROGAM-2 array has been used to study. rays emitted following the spontaneous fission of a Cm-248 source. Analysis of Doppler-broadened lineshapes corresponding to transitions from excited rotational states in neutron-rich Sr, Zr, Mo, Ru, and Pd fission fragments has enabled measurements of state lifetimes in these nuclei at nuclear spins of I similar to 10. Extracted transition quadrupole moments are compared with various recent theoretical approaches, as well as with measurements at lower spin, and an interpretation of the data is made within the context of prolate-oblate shape competition in this region.

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