Population of high spin states in transfer reactions with very heavy ions

First in-beamγ-ray study of the level structure of neutron-richS39

“…The previous published works from the experiment have involved studies of the neutron-rich isotopes 33 Si 38 Cl [7]. These studies are mainly concerned with the role of negative-parity intruder orbitals in the structure of neutron-rich nuclei on the periphery of the island of inversion, which is centered on 32 Mg, and on the description of such nuclei using state-of-the-art shell-model calculations [8]. Binary grazing and deep-inelastic reactions have been used extensively over the last few decades to study the structure * Robert.Chapman@uws.ac.uk of neutron-rich nuclei over a wide range of nuclear masses.…”

“…As a by-product of an investigation of the level structure of 45,46 Ar through in-beam γ -ray spectroscopy using the fragmentation of a 60 AMeV 48 Ca beam, Dombrádi et al [31] identified a γ -ray transition of energy 904(7) keV, which was attributed to 39 S. Thus, although the 339.9-, 398.6-, 465.5-, 904-, 1126.2-, and 1524.6-keV γ rays have been assigned to the decay of excited states of 39 S, to date none have been placed within a level scheme. Binary grazing reactions with stable neutron-rich beams and heavy targets can be used to populate yrast and nearyrast states of moderately neutron-rich projectilelike species [5,13,[32][33][34] and, in general, experiments using such reactions, although unable to reach the most neutron-rich nuclear species currently accessible to experiment, provide more detailed spectroscopy than is currently possible using intermediate-energy Coulomb excitation, where the states that are populated are, in general, those that are connected directly to the ground state by E2 transitions [35]. Fusion-evaporation reactions with stable beams are unable to populate neutron-rich nuclei such as 39 S. Here, the yrast decay sequence of 39 S, populated in binary grazing reactions, has been studied.…”

Transfer Involving Deformed Nuclei

“…10 at GSI, Oarmstadt, have used a novel method of conversion electron detection to study the system of 18 4 Macchiavelli et a/. 11 at LBL, Berkeley, have used germanium gamma ray detection to study 13 2 Xe on lS4Sm , 176Yb, and 171Yb. Some of their results for 1-and 2-neutron transfer probabilities out of the rare-earth target are shown in Fig.…”

Particle-core coupling inS37

“…Binary grazing reactions with stable neutron-rich beams and heavy targets can be used to populate yrast and near yrast states of moderately neutron-rich projectile-like species [6][7][8][9][10]. In general, experiments using such reactions, although unable to reach the most neutron-rich nuclear species currently accessible to experiment, provide more detailed spectroscopy than is possible at the present time using fragmentation reactions [11] or intermediate-energy Coulomb excitation; in the latter case, the states that are populated are, in general, those that are connected directly to the ground state by E2 transitions [12].…”