Nuclear Structure Studies with Pick-Up Reactions on Even Tellurium Nuclei: The¹²⁸Te(d,t)¹²⁷Te and the¹²⁸Te(τ,α)¹²⁷Te Reactions

Abstract

The level structure of 127Te up to an exitation energy of 2.5 MeV has been investigated with the (d,t) and (τ,α) reactions with beams of 17 MeV deuterons and 24 MeV τ-particles. Angular distributions were recorded and analyzed with standard DWBA calculations. Spectroscopic factors were deduced. Anomalous angular distributions and cross sections of some low-lying and weakly excited states are explained using CCBA calculations.

Valence neutron properties relevant to the neutrinoless double-βdecay of130Te

“…Neutron-removal reactions have been probed via (p,d) [14], (d,t) [15], and ( 3 He,α) [16]. Only some of these studies resulted in published cross sections.…”

“…Several steps were taken to ensure the Xe target thickness was well calibrated and monitored to account for any loss of material. Rutherford elastic scattering was measured at 8 MeV and 25 • , then immediately followed by another measurement of (d,d) scattering at the energy where we ran the (d,p) reaction, 15 MeV, but at the same angle of 25 • . This provided a normalization between (d,d) scattering in the Rutherford regime and at higher energies.…”