Z. Hu

Thirty-two-fold segmented germanium detectors to identify γ-rays from intermediate-energy exotic beams

Abstract Thirty-two-fold segmented coaxial high-purity large-volume germanium detectors for use in intermediate-energy radioactive-ion-beam experiments have been developed and tested. This high degree of segmentation will allow a precise localization of the point of photon interaction in the detector, thus allowing accurate doppler reconstruction of the energy of a γ-ray emitted in flight. In this article we report on the design of these detectors and their operational characteristics.

An automatic energy-calibration method for segmented germanium detectors

B(E3; 0_1^+ to 3_1^-)

A high-efficiency NaI(Tl) detector array with position sensitivity for experiments with fast exotic beams

transition matrix elements have been measured for even-mass

Variation with mass of

^{124-134}

\boldmath{B(E3; 0_1^+ \to 3_1^-)}

Xe nuclei using sub-barrier Coulomb excitation in inverse kinematics. The trends in energy

transition rates in

E(3^-)

A=124-134

and

even-mass xenon nuclei

B(E3; 0_1^+ to 3_1^-)

Variation with mass ofB(E3;01+→31−)transition rates inA=124−134even-mass xenon nuclei

excitation strengths are well reproduced using phenomenological models based on a strong coupling picture with a soft quadrupole mode and an increasing occupation of the intruder