Evaporation residue excitation function measurement for the16O+194Ptreaction

Abstract

Evaporation residue cross sections for the reaction 16 O + 194 Pt were measured at beam energies in the range 75.4-103.1 MeV using the gas-filled separator Hybrid Recoil Mass Analyzer at the Inter University Accelerator Centre, New Delhi. The transmission efficiency of the separator was obtained using the calibration system 16 O + 184 W and a Monte Carlo simulation code. Measured evaporation residue cross sections were fitted with statistical model calculations using Kramers' formula. The present measurement provides further evidence for the onset of dissipative forces in fission in the mass ∼200 region.

Measurement of evaporation residue excitation functions for theF19+Pt194,196,198Singh1, Behera2, Kaur3 et al. 2014Phys. Rev. CSelf Cite332280View full textAdd to dashboardCite

“…The ER cross sections for 16 O + 194 Pt system were measured earlier using the HYRA spectrometer [13]. The only difference from the present experiment was that the size of scattering chamber was larger (angular acceptance of HYRA was more) in earlier work.…”

Probing Quasifission In Reactions Forming Rn Nucleus

“…Probing quasifission in reactions forming 210 Rn nucleus A. Shamlath studied in this work, which is in agreement with the experimental observations [21,27,30,24]. P CN values show a decreasing trend with increase in beam energy.…”

“…The recoil mass separator, HYRA (HYbrid Recoil mass Analyzer) [26,27] was used for the separation and identification of the ERs from the intense beam background. HYRA is a dual mode, dual stage mass separator, with its first stage can be operated in gas-filled mode or vacuum mode.…”

“…It is a function of various parameters [27,28] such as the entrance-channel mass asymmetry, beam energy, the target thickness, the exit channels of interest, the angular acceptance of the separator, the magnetic field and gas pressure settings, and the size of the focal plane detector. Entrance channel mass asymmetry, target thickness, angular acceptance of the HYRA, and size of the focal plane detector remain unchanged throughout the experiment, while the rest of the parameters change.…”

Probing nuclear dissipation via evaporation residue excitation functions for theO16,18+Pt198reaction

“…ER excitation function measurements were performed at laboratory beam energies (after correcting for the loss in the pressure window foil of carbon having thickness 660 txg/cm2 and half thickness of the targets) of 78.0 to 105.6 MeV for the l60 beam and 77.8 to 105.4 MeV for l80 . In addition, ER cross sections were also measured at one energy for the l60 + l94Pt reaction, for which data of ER excitation functions already exist [13], and this data was used for normalization and to obtain the transmission efficiency of the HYbrid Recoil mass Analyzer (HYRA). The heavy ERs produced in the reaction were separated from the intense beam background by the gas filled separator HYRA [14], It is a dual-mode, dual-stage recoil mass separator and spectrometer.…”