[en] The ₁₀₂Pd(α,2nß)₁₀₄Cd reaction has been utilized for the investigation of the quasirotational ground state band in ₁₀₄Cd. Single ß-ray spectra, ß-ray excitation functions, angular distributions, and ß-ß coincidence measurements were performed by means of Ge(Li) detectors. The results are discussed in terms of the variable-moment-of-inertia (VMI) model. For even-mass Cd isotopes a shell effect is observed, the nucleus becoming softer in the vicinity of the closed subshell. (author)

[en] The Berkeley Gas-filled Separator provides new research opportunities at Lawrence Berkeley National Laboratory's X-Inch Cyclotron. The use of this apparatus for the study of proton drip-line nuclides is discussed. Preliminary results of ⁷⁸Kr bombardments of ¹⁰²Pd targets at mid-target energies of 360, 375 and 385 MeV are presented. Improvements planned partially as a result of this measurement are also discussed

[en] The Berkeley Gas-filled Separator provides new research opportunities at Lawrence Berkeley National Laboratory's 88-Inch Cyclotron. The use of this apparatus for the study of proton drip-line nuclides is discussed. Preliminary results of ⁷⁸Kr bombardments of ¹⁰²Pd targets at mid-target energies of 360, 375 and 385 MeV are presented. Improvements planned partially as a result of this measurement are also discussed

[en] The mean cross sections of the ¹⁰²Pd(n,p)sup(102,102m)Rh and ¹⁰³Rh(n,2n)sup(102,102m)Rh reactions were experimentally determined by irradiating palladium and rhodium samples for 1 week at an equivalent fission flux of 3 x 10¹³ n.cm^-2.s^-1. The equivalent fission neutron flux was determined using six reference threshold reactions [⁴⁷Ti(n,p)⁴⁷Sc; ⁵⁸Ni(n,p)sup(58,58m)Co; ⁵⁴Fe(n,p)⁵⁴Mn;⁴⁶Ti(n,p)⁴⁶Sc; ⁹²Mo(n,p)sup(92m)Nb and ⁵⁵Mn(n,2n)⁵⁴Mn] and appeared to be unperturbed. Thorough radiochemical decontaminations were required in order to separate the sup(102,102m)Rh activities from the high thermal neutron induced palladium, silver and/or iridium activities. The results are compared with the values predicted by empirical relationships. (author)

[en] The ¹⁰⁴Cd, ¹⁰⁵Cd nuclei have been investigated in the ¹⁰²Pd(α,nγ)¹⁰⁴Cd, ¹⁰²Pd(α,nγ)¹⁰⁵Cd and ¹⁰²Pd(α,3nγ)¹⁰⁵Cd reactions. The proposed level schemes including states up to 4817.7 keV and 3342.9 keV for ¹⁰⁴Cd and ¹⁰⁵Cd respectively are based on results obtained from direct and delayed γ-ray spectra, excitation functions, γ-γ coincidences and γ-ray angular distributions. Intense E2 cascades have been observed in ¹⁰⁴Cd nucleus. Decoupled bands built on the νhsub(11/2) and on νgsub(7/2) are populated in ¹⁰⁵Cd

No abstract available

[en] Proton radioactivity from the closed neutron shell nucleus ¹⁵⁵Ta has been observed. It was produced via the p4n fusion evaporation channel using a ⁵⁸Ni beam on a ¹⁰²Pd target. The measured decay properties are E_p=1765(10) keV and t_1/2=12_-3⁺⁴ μs. Spin and parity J^π=11/2^- and a spectroscopic factor S_p^exp=0.58_-0.15^+0.20 characterize the decaying state. copyright 1999 The American Physical Society

[en] The new proton radioactivity ¹⁵⁵Ta has been observed. It was produced via the p4n fusion evaporation channel using a ⁵⁸Ni beam on a ¹⁰²Pd target. The measured decay properties were: E_p = (1765 ± 10) keV and t_1/2 = (12_-3⁺⁴) micros. Using the WKB approximation a spin and parity of J^π = 11/2^2- and a spectroscopic factor of S_p^exp 0.58_-0.17^+0.22 were determined

[en] The neutron capture cross section of the proton rich nucleus 102Pd was measured with the Detector for Advanced Neutron Capture Experiments (DANCE) at the Los Alamos Neutron Science Center. The target was a 2 mg Pd foil with 78% enriched 102Pd. It was held by a 0.9 μm thick Mylar bag which was selected after comparing different thicknesses of Kapton and Mylar for their scattering background. To identify the contribution of the other Pd isotopes the data of a natural Pd sample was compared to the data of the 102Pd enriched sample. A 12C sample was used to determine the scattering background. The 102Pd(n, γ) rate is of importance for the p-process nucleosynthesis

[en] The new isotope 178Tl was produced in a bombardment of 102Pd by 78Kr ions at 340 MeV. Reaction products were separated from the beam by the Berkeley Gas-Filled Separator and implanted into a silicon strip detector where the subsequent alpha decays were measured. Four distinct alpha transitions from 178Tl were observed correlated to 6.54 MeV alpha decays from the previously known 174Au daughter. In some cases, the 174Au decay was followed by a 5.815 MeV alpha decay. This new transition is tentatively assigned to the decay of the 170Ir ground state. The half-life of 178Tl was measured to be 254 ms. The alpha decay branch of 174Au was determined to be 90(6) percent