Reduced transition probabilities along the yrast line in W-166


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Saygi B. , Joss D. T. , Page R. D. , Grahn T., Simpson J., O'Donnell D., ...Daha Fazla

PHYSICAL REVIEW C, cilt.96, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

Özet

Lifetimes of excited states in the yrast band of the neutron-deficient nuclide W-166 have been measured utilizing the DPUNS plunger device at the target position of the JUROGAM II gamma-ray spectrometer in conjunction with the RITU gas-filled separator and the GREAT focal-plane spectrometer. Excited states in W-166 were populated in the Mo-92(Kr-78, 4p) reaction at a bombarding energy of 380 MeV. The measurements reveal a low value for the ratio of reduced transitions probabilities for the lowest-lying transitions B(E2; 4(+)-> 2(+)) / B(E2; 2(+)-> 0(+)) = 0.33(5), compared with the expected ratio for an axially deformed rotor (B-4/2 = 1.43).