“…We here briefly recall the Prisma detector system. A position-sensitive microchannel plate detector [32] was placed at the entrance of the spectrometer, providing a start signal for time-of-flight measurements and position signals. Ions pass through the optical elements of the spectrometer (a quadrupole and a dipole) and enter a focal plane [33] whose first part is made of a parallel plate of multiwire type, providing timing and position signals with resolutions similar to the entrance detector.…”
Neutron-rich chlorine isotopes were populated in the 40 Ar + 208 Pb multiple transfer reaction via the −1p channels in a fragment-γ coincident measurement employing the Prisma-Clara setup. New γ transitions have been identified and, together with already available data, level schemes have been revised and compared with the results of large-scale sd-pf shell-model calculations. The evolution of the energy splitting between the s 1/2 and d 3/2 orbitals and the increased mixing of different proton configurations in the populated Cl isotopic chain have been deduced by inspecting the shell-model wave functions.
“…We here briefly recall the Prisma detector system. A position-sensitive microchannel plate detector [32] was placed at the entrance of the spectrometer, providing a start signal for time-of-flight measurements and position signals. Ions pass through the optical elements of the spectrometer (a quadrupole and a dipole) and enter a focal plane [33] whose first part is made of a parallel plate of multiwire type, providing timing and position signals with resolutions similar to the entrance detector.…”
Neutron-rich chlorine isotopes were populated in the 40 Ar + 208 Pb multiple transfer reaction via the −1p channels in a fragment-γ coincident measurement employing the Prisma-Clara setup. New γ transitions have been identified and, together with already available data, level schemes have been revised and compared with the results of large-scale sd-pf shell-model calculations. The evolution of the energy splitting between the s 1/2 and d 3/2 orbitals and the increased mixing of different proton configurations in the populated Cl isotopic chain have been deduced by inspecting the shell-model wave functions.
“…The presently adopted solution in such cases is a simplified magnetic element configuration and the use of the concept of trajectory reconstruction. This idea has been successfully employed in the very large solid angle (∼100 msr) spectrometers PRISMA [2][3][4], and VAMOS [5] and MAGNEX [6].…”
Section: Generals On Heavy Ion Magnetic Spectrometersmentioning
confidence: 99%
“…The reconstruction of the ion trajectory is obtained from the measurement of an entrance [2] and focal plane positions [3], together with time of flight. In between these two detector systems only two magnetic elements are located, a quadrupole followed by a dipole.…”
Section: Generals On Heavy Ion Magnetic Spectrometersmentioning
Abstract. The revival of transfer reaction studies benefited from the construction of the new generation large solid angle spectrometers, coupled to large γ arrays. The recent results of γ-particle coincident measurements demonstrate a strong interplay between single-particle and collective degrees of freedom that is pertinent to the reaction dynamics. Via transfer of pairs, valuable information on the component responsible for particle correlations has been derived.
“…The detector system in these spectrometers, besides nuclear charge, energy and timing, provides the necessary position information along the ion path. This idea has been successfully employed in the very large solid angle (100 msr) spectrometers Prisma [2][3][4][5], VAMOS [6] and MAGNEX [7].…”
Section: Generals On Detection Techniquesmentioning
The revival of transfer reaction studies benefited from the construction of the new generation large solid angle spectrometers, coupled to large γ arrays. The recent results of γ-particle coincident measurements in 40 Ca+ 96 Zr and 40 Ar+ 208 Pb reactions demonstrate a strong interplay between single-particle and collective degrees of freedom that is pertinent to the reaction dynamics. The development of collectivity has been followed in odd Ar isotopes populated in the 40 Ar+ 208 Pb reaction through the excitation of the 11/2 − states, understood as the coupling of single particle degrees of freedom to nuclear vibration quanta. Pair transfer modes is another important degree of freedom which is presently being studied with Prisma in inverse kinematics at energies far below the Coulomb barrier. First results from the 96 Zr+ 40 Ca reaction elucidate the role played by nucleon-nucleon correlation.
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